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EMC® NetWorker® Snapshot Management for NAS Devices 8.2

1. R To restore data files from backup storage to a client and apply transaction redo logs to the data to make it consistent with a given point in time See restore Software component whose configurable attributes define the operational properties of the NetWorker server or its clients Clients devices schedules groups and policies are all NetWorker resources 1 Recover 2 To retrieve individual data files from a backup and copy the files to a client without applying transaction logs See recover NetWorker setting that determines the minimum period of time that backup data is retained on a storage volume and available for recovery After this time is exceeded the data is eligible to be overwritten See browse policy Backup of a snapshot to conventional storage media such as disk or tape Rollover whereupon the snapshot copy is deleted Previously known as a Serverless backup live backup or nonpersistent backup S 1 Group of files file system or volumes on a single client computer that is copied asa snapshot on a Storage array or backed up to storage media 2 NetWorker media database record that describes a specific snapshot or backup Internal identification number assigned to a Save set Type of backup that is configured to start automatically at a specified time for a group of one or more NetWorker clients A scheduled backup generates a bootstrap save set Point in time PIT copy of specific data files volu
2. Integration Guide 302 000 700 REV 03 Copyright 1990 2014 EMC Corporation All rights reserved Published in USA Published November 2014 EMC believes the information in this publication is accurate as of its publication date The information is subject to change without notice The information in this publication is provided as is EMC Corporation makes no representations or warranties of any kind with respect to the information in this publication and specifically disclaims implied warranties of merchantability or fitness fora particular purpose Use copying and distribution of any EMC software described in this publication requires an applicable software license EMC EMC and the EMC logo are registered trademarks or trademarks of EMC Corporation in the United States and other countries All other trademarks used herein are the property of their respective owners For the most up to date regulatory document for your product line go to EMC Online Support https support emc com EMC Corporation Hopkinton Massachusetts 01748 9103 1 508 435 1000 In North America 1 866 464 7381 www EMC com 2 EMC NetWorker Snapshot Management for NAS Devices 8 2 Integration Guide CONTENTS Figures Tables Preface Chapter 1 Chapter 2 Chapter 3 Overview of NAS Snapshot Features NetWorker snapshot management for NAS feature description NAS SnapShot Operations eessssecccceesssseecceceessssecceseseesee
3. NetWorker reporting features enable you to monitor NAS snapshot operations for each NetWorker client or NAS device including snapshots that you did not create with NetWorker NetWorker catalogs all snapshots as backup save sets You can monitor the progress of the snapshot creation mounting deletion and rollover operations The NetWorker nwnassnap raw log provides details of snapshot operations Internationalization support NetWorker provides NAS snapshot operations with the standard NetWorker client support for non ASCII international character sets Components of the NAS snapshot network NAS devices You can deploy various required and optional devices hosts and connectivity for NAS snapshot operations in a NetWorker datazone ANAS device is a dedicated file server that provides primary data storage that you can use for NDMP data operations A NAS device may also be called an NDMP data server datamover NDMP client or NAS filer You must configure a NAS device as a client of the NetWorker server but you do not install NetWorker client software on a NAS device All the supported NAS devices support directed recovery to the host that runs the recovery You can recover to an NFS file share directory on that host which enables recovery to a remote host or remote device Table 2 NAS device support and limitations NAS device Characteristics siz device Characteristics EMC ne E e E Supports snapshots with SnapshotIQ
4. and requires OneFS 7 02 or later Supports replications with SynclQ and requires OneFS 7 1 or later Supports snapshots and replication at the directory level Supports in place and out of place recovery of snapshot directories Supports directed recovery Does not support in place or out of place recovery from a remotely replicated snapshot EMC VNX VNX2 Supports snapshots at the file system level The Client resource must specify the Control Station name Supports directed recovery Does not support in place or out of place snapshot recovery Does not support replication EMC VNXe Requires Unisphere Management client uemcli on the NetWorker server Monitoring and reporting NAS snapshot operations 17 Overview of NAS Snapshot Features Table 2 NAS device support and limitations continued NAS device Characteristics Supports snapshots at the file system level The Client resource must specify the Control Station name Supports directed recovery Does not support in place or out of place snapshot recovery Does not support replication Requires operating system libraries from the NetApp Manageability SDK available from NetApp On Microsoft Windows install in a directory in the system level PATH variable On Linux install in the usr lib64 directory Supports snapshots at the volume level only No support for cluster mode systems or for replication SnapMirror and SnapVault Supports OnTAP 8 0 or later 7 mode o
5. files generated in the nsr logs UNIX directory on the application client host The log file name is in the form of script_name_LOGFILE txt The script output appears in the log file 32 EMC NetWorker Snapshot Management for NAS Devices 8 2 Integration Guide CHAPTER 3 Data Management and Recovery This chapter includes the following topics Snapshot MaMaSemenil cccccc secs cescessescececteseseeseodensseveecs e NAS snapshot recovery support and limitations e Recovering data from a snapshot with the Recovery Wizard Data Management and Recovery 33 Data Management and Recovery Snapshot management Snapshot reporting The chapter describes the management and the recovery operations for NAS device file system data only The NMC Recovery Wizard and the NetWorker CLI commands provide features that enable you to browse delete change snapshot expiration and recover snapshot data You can use NMC Reports to create individual reports of NAS snapshot replicate and rollover activities 1 In NMC select the Reports view 2 Inthe Snapshot Statistics folder select either a summary report or a statement report to view The Configure tab for the selected report type appears in the right panel 3 Inthe Configure tab customize the items that you want to include in the report Select the item parameters Click the Remove lt Remove All or Add All gt buttons as required If you do not specify Save Time v
6. folders user2 if they both reside on the same NAS device Each save set will have a Separate save set ID even if both save sets belong to the same client and both reside on the same NAS device 34 EMC NetWorker Snapshot Management for NAS Devices 8 2 Integration Guide Data Management and Recovery During rollover to conventional storage media NetWorker assigns a different save set ID to each rolled over snapshot object By having two save set IDs NetWorker manages the snapshot data separately from the rolled over data Each save set has an independent expiration policy and when one save set expires you can still use the other save set to perform a recovery The snapshot policy of the NetWorker Client resource determines the expiration of a snapshot save set However you can change the expiration period of an existing snapshot save set and the change does not affect the browse or expiration periods of an associated rollover Browsing snapshot and rollover save sets The NetWorker client file index records only the save sets that it rolls over to conventional storage media Because NetWorker indexes rollovers you can browse the save set files in NMC The NetWorker media database contains entries for snapshot save sets However unlike rollovers NetWorker does not catalog the snapshot save sets in the client file index To browse snapshot save sets you must use the NMC Recovery Wizard or the nsrsnapadmin command utility NetWorker will
7. following topics Using CLI commands for NetWorker Operations seseessecceeeseeeeeeseeeeeeseeeeeesees 44 Usinge nsrsnapadmin operations oreesa iiaii ia ii ea 44 CSE ry Ve with the miminio command icaeoeii eiiieaen 47 Using nsrnassnap_recover operationS e esssssssssssssseserereeereeeeesssssssssssssssosserereeeee 47 Backing up with the Savegrp COMMANA ceeessseccceecssssececceeeessceeeceeeesssenseeeeseeeses 48 Command Line Operations for NAS Recovery 43 Command Line Operations for NAS Recovery Using CLI commands for NetWorker operations This appendix provides a summary of CLI commands and examples for NetWorker operations The EMC NetWorker Command Reference Guide and NetWorker man pages provide details on the commands NAS snapshot commands You can use the following commands for managing NetWorker NAS snapshots e nsrnassnap e nsrnassnap_discover e nsrnassnap_recover e nsrnassnap_save e nsrnassnapck The NetWorker man pages and the NetWorker Command Reference Guide provide details Using nsrsnapadmin operations You can run the nsrsnapadmin command utility in interactive mode to manually query recover delete and expire file system snapshot save sets Note The nsrsnapadmin interactive commands support only snapshots of file systems The commands do not support the snapshots of application data such as NMDA or NMSAP data To start interactive mode type nsrsnapadmin at the CLI prompt Wh
8. hoc backup Physical storage such as a disk file system optical disk or magnetic tape to which backup data is written See volume 50 EMC NetWorker Snapshot Management for NAS Devices 8 2 Integration Guide media database mirror mount network attached storage NAS Network Data Management Protocol NDMP NetWorker administrator NetWorker Management Console NMC NetWorker server NetWorker Snapshot Management NSM point in time PIT copy policy pool quiesce Glossary Database that contains records of backups and media volumes and the lifecycle status of all data and volumes managed by the NetWorker server 1 Exact duplicate of data or another object such as a disk 2 To write duplicate data to more than one device To make a volume physically available for use such as the placement of a removable disk volume or tape into a drive for reading or writing N Disk array or storage device NAS filer that connects directly to the messaging network or LAN interfaces and uses the common communication protocols of either TCP IP or NDMP Software component that uses TCP IP standards to specify how heterogeneous network components communicate for the purposes of backup recovery and transfer of data between storage systems Person who normally installs configures and maintains NetWorker software on network computers and who adds users and defines user privileges NetWorker web interface used
9. table lists Application Information variables that are common to the NAS devices that NetWorker supports Table 3 Common Application Information variables NASDeviceType Specifies the snapshot provider Usually not required due to device type discovery Valid values are Isilon NetApp VNX and VNXe If you do not specify a value NSM tries each of these values in order NSR_DEBUG_LEVEL Specifies the verbosity of error message logs Valid values are 0 to 9 The default value is 0 NSR_MOUNTPOINT_NAME Specifies the name of the mount point to use when NetWorker needs to mount a snapshot on a client NSR_POST_SNAPSHOT_SCRIPT Specifies the pathname of the postprocessing command script There is no default value NSR_PRE_SNAPSHOT_SCRIPT Specifies the pathname of the preprocessing command script There is no default value NSR_PS_DEBUG_LEVEL Specifies the verbosity level of the recovery logs Valid values are 0 to 9 The default value is 0 NSR_PS_RECOVER_FILE_OPT N R Y Specifies options to handle duplicate file behavior on recover Options are N skip do not overwrite R rename and Y overwrite NSR_USE_EXISTING_MOUNTPOINT Specifies use of an existing mount point instead of creating a temporary mount point Not available for NetApp on Linux The default value is No 42 EMC NetWorker Snapshot Management for NAS Devices 8 2 Integration Guide APPENDIX B Command Line Operations for NAS Recovery This appendix includes the
10. the snapshot when its rollover completes d In the Snapshot Expiration Policy field select the period after which snapshots will be marked for automatic deletion To create a new expiration policy click the plus sign to the right of the field and in the Create Policy window specify the Policy Name and Period e In the Backup Snapshot Options field specify which snapshots of the day will be rolled over to storage media All snapshots Rolls over all snapshots First snapshot Rolls over the first snapshot Last snapshot Rolls over the last snapshot based on the expected maximum Number of Snapshots value Every___ snapshots Rolls over specific snapshots in the sequence Separate the numbers by commas For example 3 every third snapshot or 3 6 9 every third sixth and ninth snapshot Do not back up Does not roll over any snapshots snapshots f Click Next 12 If you are configuring snapshot rollovers to NDMP devices complete the Specify NDMP Properties for Rollover page Available values are those supported by the client s NDMP configuration The EMC NetWorker Administration Guide provides details a Specify the NDMP backup type NAS device Supported backup types EMC VNX t r dump the optimal backup type for this device it traverses a file tree in mixed width first and depth first order vbb use the volume based backup type to back up the entire volume at the block level more efficient than tra
11. volume to the specified location Figure 3 In place recovery restores data to the original location on the source device NetWorker server NAS client LAN Control NAS device Examples of snapshot recovery 21 Overview of NAS Snapshot Features Figure 4 Out of place recovery restores data to a different location on the source device NetWorker server NAS client LAN NAS device a Snapshot save sets gt __ 7 Figure 5 Directed recovery restores data to the NetWorker client that runs the recovery NAS client NetWorker server Control y S i NAS device 22 EMC NetWorker Snapshot Management for NAS Devices 8 2 Integration Guide CHAPTER 2 Software Configuration This chapter includes the following topics Road map for NAS snapshot configuration NetWorker with NAS configuration prerequisites Configuring a snapshot and rollover with the wizard Configuring snapshots and rollovers manually Configuring the Application Information variables Configuring preprocessing and postprocessing scripts Software Configuration 23 Software Configuration Road map for NAS snapshot configuration Plan the NAS snapshot configuration by using a high level road map that outlines the sequence of configuration tasks that you need to perform 1 Ensure that you meet the configuration prerequisites NetWorker with NAS configuration prerequisites on page 24 provides details 2 Config
12. you have successfully changed the expiration time Notes 46 EMC NetWorker Snapshot Management for NAS Devices 8 2 Integration Guide Command Line Operations for NAS Recovery e If you omit the year the year defaults to the current year e If you omit the meridian NetWorker uses a 24 hour clock e If you omit the time zone for example GMT NetWorker uses the current time zone e If you specify a date mm dd yy as in e 09 04 13 the time defaults to 00 00 00 NetWorker changes the snapshot save set s browse and retention times to 09 04 13 00 00 00 If you specify a time hh mm ss as in e 20 00 00 the date defaults to the system time for example 09 03 13 NetWorker changes the snapshot save set s browse and retention times to 09 03 13 20 00 00 Querying with the mminfo command Another way to query a client s snapshot save sets is with the mminfo command The q snap option lists all snapshot save sets for a particular client To list the snapshot save sets for a client type the following at the command prompt mminfo s server S a q client clientname snap where e serveris the hostname of the NetWorker server e clientname is the hostname of the NAS device Example output mminfo a q client isilon l emc com snap r ssid savetime name ssid date name A219 9166 9 ki I 29 20114A fiis 643255862 4 16 2014 ifs data 609701430 4 16 2014 ifs data folders 1700220469 1 6 2013 ifs data folders anne 273613734
13. 8 3 4 2014 ifs data linux 576146998 5 7 2012 ifs data amsr jr LGISSLULGOS 2 5 2014 rra loecllegic 2 Ha Ate 9 ON I 20 204 fike Mo calseqe 2 The EMC Command Reference Guide and NetWorker man pages provide details on the mminfo command Using nsrnassnap_recover operations You can use thensrnassnap_ recover command to manually recover save set files and directories When specifying the file or directory to recover directories must end with a slash character For example Single file ISTCMASSMNCIO MCCS S TLlel2s G maslo ss Coir CN C file789 1ss cor com d d recover 7777 A NSR_PS FILE RECOVER OPT Y A NSR DIRECTED RECOVER HOST filel133 G9 vol jjr4 testl xml Querying with the mminfo command 47 Command Line Operations for NAS Recovery Entire directory tree nornassnep TECOver gt Silel2 s meso les eo seem C file789 1ss cor com d d recover 7777 A NSR PS FILE RECOVER _OPT Y A NSR_DIRECTED RECOVER_HOST filel133 G9 vol jjr4 The recovery options forthe A NSR_PS_ FILE RECOVER_OPT Y N R command are as follows e Y Overwrite the file or directory e N Skip the file or directory e R Rename the file or directory Note For NetApp devices a recovery option must be specified otherwise the recovery fails Backing up with the savegrp command You can manually perform an NAS snapshot by using the savegrp comman
14. NetWorker Command Reference Guide and NetWorker man pages provide details Example nsrsnapadmin operations After you start the nsrsnapadmin utility in interactive mode you can type a specific command and its options at the input prompt to perform an NSM operation The following sections provide examples of the commands and options used for specific NSM operations Querying snapshot save sets When you type the p command and its options at the nsrsnapadmin prompt the program queries the NetWorker server for snapshot save Sets for the client The program lists specific properties of the snapshot save sets such as the creation time and the date of each snapshot For example p s server c client v path where e serveris the hostname of the NetWorker server e clientis the hostname of the NAS device e pathis the pathname of a particular snapshot save set Type the pathname to query a single save set only otherwise the output message lists all the save sets A message similar to the following appears nsrsnapadmin gt p c isilon 1l myorg com ssid 643255862 savetime 4 16 2014 11 05 02 AM Example nsrsnapadmin operations 45 Command Line Operations for NAS Recovery 1397660702 expiretime 4 17 2015 9 41 59 AM 1429278119 ssname ifs data File by file browsing and recovery When you type the r command and its options at the nsrsnapadmin prompt the program lists the file system as it existed at the time of the sna
15. To verify the configurations in NMC right click the NAS device in the Clients table and select Check Snapshot Configuration The verification can take some time A pop up message will list detected problems Verification assumes sufficient resources are available for the snapshot and the rollover operations and does not guarantee SUCCESS Configuring the Application Information variables Special Application Information variables provide specific control of snapshot processes The Client Configuration Wizard cannot configure these variables You must manually configure these variables in the NetWorker Client resource for the NAS device by using the NetWorker property windows Application Information Variables on page 41 provides details Configuring preprocessing and postprocessing scripts You can run user defined preprocessing and postprocessing scripts from the application client You can run these scripts only for file system backups Use preprocessing scripts and postprocessing scripts for operations such as application quiescing shutdown or startup The scripts can produce output such as log files but the scripts must return an exit status of 0 which means that the script did not fail and the backup can run Any other exit code for a preprocessing script will cause the backup to fail Note EMC Technical Support does not support user defined scripts Use the following guidelines for the scripts Procedure 1 Provide the script
16. _ as NDMP tape device F 1 ANAS client writes its production data to primary storage on a NAS device NetWorker storage node 19 Overview of NAS Snapshot Features 2 Ata specified time the NetWorker server instructs the NAS device to create a snapshot of production data The NetWorker Client resource settings for the NAS device identify which file systems on the device require a snapshot The NAS device performs a proprietary operation to create a local snapshot 4 The NetWorker client settings may instruct the NAS device to roll over the snapshot save set to secondary storage on an NDMP tape or VTL device e f NetWorker rolls over the snapshot the NAS device copies the snapshot save set to the specified tape backup media or VTL on the secondary storage device By default setting the snapshot retention policies carry over to the backup copy e if NetWorker does not roll over the save set but retains the snapshot on the NAS device only NetWorker can recover the save set data from the snapshot only 5 The NetWorker server manages the snapshot save set and any secondary backup save Set according to the options configured in the Client resource and Snapshot Policy resource 6 The NAS device retains the snapshot until it expires or until the NetWorker server must delete it to create more snapshots as specified by the snapshot policy Example of a snapshot from replication The following figure and description illustrate
17. ackup save set from which recoveries can be made The NetWorker Client resource settings may also instruct the remote NAS device to roll over the snapshot save set to secondary storage on an NDMP tape or VTL device The NetWorker server manages both the remote snapshot save set and any secondary backup save set according to the retention options and other options configured in the Client resource and Snapshot Policy resource The NAS device retains the snapshot until it expires or until the NetWorker server must delete it to create more snapshots as specified by the Snapshot Policy resource Examples of snapshot recovery The following description of process and figures illustrate the data flow for recovery of directories or files from a snapshot save set 1 4 You select the snapshot volume that contains the data that you want to recover NetWorker mounts the snapshot volume You browse for the files file systems or volumes that you want to recover You specify where to recover the data on the NAS device host or on a NetWorker host e in place recovery Recover to the original location on the NAS device e Out of place recovery Recover to a different location on the NAS device e Directed recovery Recover to a directory on the NetWorker client host that is running the recovery The recovery directory may be a local directory or a locally mounted CIFS or NFS remote file system NetWorker copies the data from the snapshot
18. alues the report will display all the available data The View Report tab shows the resultant report The EMC NetWorker Administration Guide provides details Discovering NAS save sets The NetWorker Devices view enables you to review a table of the snapshot save sets ona NAS device including snapshots that NetWorker did not create The table lists all snapshots that NetWorker created as Managed Snapshots that by NetWorker did not create are listed as Discovered NetWorker can roll over recover and report on discovered snapshots but cannot delete them Snapshot discovery is not enabled by default Manually discover snapshot save sets on a NAS device 1 In NMC open the NetWorker application Devices view 2 Inthe navigation tree right click the NAS device and select Run Discovery The Save Set table updates Schedule the discovery of snapshot save sets on a NAS device 1 In NMC open the NetWorker application Devices view 2 Inthe navigation tree right click the NAS device and select Properties 3 Inthe properties window on the Snapshot Management tab provide the necessary credentials and the time of day 24 hour clock when you wan the daily discovery to run Save set IDs and expiration policies When NetWorker creates a snapshot it generates a separate save set ID for each snapshot object specified in the Client resource For example a single physical snapshot can create save sets for home folders user1 and home
19. ces Configuring a NAS device manually NAS devices are configured as NetWorker clients You can manually modify a NAS device for snapshots and rollovers by using the NMC property windows This method enables you to configure special directives or available options that the wizard interface does not support such as Application Information Variables on page 41 However you cannot configure replication policies required for locally replicated and remotely replicated snapshots which you must configure with the wizard The EMC NetWorker Administration Guide provides additional Client resource details that are not specific to NAS device configuration Procedure 1 Ensure the necessary prerequisites NetWorker with NAS configuration prerequisites on page 24 provides details Run NMC and in the NMC Enterprise view browse tree right click the NetWorker server that will manage the snapshots and select Launch Application Inthe NetWorker servers Configuration view right click the NAS device in the Clients table and select Modify Client Properties On the General tab ensure the following settings a Inthe Save set field type or browse and select all the file systems directories or individual files that you want to include in the snapshot List each item ona separate line b In the Pool field select the media pool for the rollover On the Apps amp Modules tab ensure the following settings a If you plan to
20. client interface connect to a NetWorker server to back up recover archive and retrieve files over a network Technical Notes White Papers Technical Notes and White Papers provide an in depth technical perspective of a product or products as applied to critical business issues or requirements Technical Notes and White paper types include technology and business considerations applied technologies detailed reviews and best practices planning Special notice conventions used in this document EMC uses the following conventions for special notices NOTICE Addresses practices not related to personal injury EMC NetWorker Snapshot Management for NAS Devices 8 2 Integration Guide Preface Note Presents information that is important but not hazard related Typographical conventions EMC uses the following type style conventions in this document Bold Use for names of interface elements such as names of windows dialog boxes buttons fields tab names key names and menu paths what the user specifically selects or clicks Italic Use for full titles of publications referenced in text Monospace Use for e System code e System output such as an error message or Script e Pathnames file names prompts and syntax e Commands and options Monospace italic Use for variables Monospace bold Use for user input Square brackets enclose optional values Vertical bar indicates alternate selections the bar means or Brac
21. configuration purposes without NetWorker client software installed The wizard is the recommended configuration method Procedure 1 Ensure the necessary prerequisites NetWorker with NAS configuration prerequisites on page 24 provides details Run NMC and in the Enterprise view browse tree right click the NetWorker server that will manage the snapshots and select Launch Application Inthe NetWorker server s Configuration view launch the client wizard NMC configures NAS devices as NetWorker clients e To create a NAS device backup configuration right click Client in the navigation tree and select New Client Wizard e To modify a configuration right click an existing NAS device in the Client table and select Modify Client Wizard Inthe wizard complete the Specify the Client Name and Type page a In the Client Name field type a hostname associated with a non aggregated non teamed network connection to one of the Isilon cluster nodes that has a fixed IP address Do not use the SmartConnect hostname b In the Client Type field select NAS Device c Click Next Complete the Specify Credentials for the NAS device page a In the Management Credentials fields type a User Name and Password for the user authorized to access data on this client instance of the NAS device for example to create delete or share snapshots Each instance can have a different user You may need to provide a management name o
22. d You must configure all resources before you run the command to perform the snapshot The savegrp command whether invoked from the CLI or NSM settings initiates the backup process The savegrp command recognizes the application host as a NetWorker client configured for NSM and runs nsrnassnap The nsrnassnap command applies the snapshot retention policies when it runs the nsrnassnap_save command How to perform a savegrp command line backup 48 To perform a snapshot you can use the savegrp command from the command line for example savegrp group name where group_nameis the name of the group configured for snapshot operations To add a rollover to conventional storage media add the b option to the command You must specify the details of the rollover in the snapshot policy The EMC Command Reference Guide and man pages provide details on the savegrp command EMC NetWorker Snapshot Management for NAS Devices 8 2 Integration Guide GLOSSARY backup backup volume browse policy client client file index client initiated backup Client resource clone cluster consistent Console server This glossary contains the definitions of terms used in this guide 1 Replica or copy of database or application data or entire computer system stored separately from the original which can be used to recover the original if it is lost or damaged 2 Operation that saves data to a volume for use as a backup Volume use
23. d to store backup data distinguished from an archive volume or a clone volume NetWorker policy that specifies the period of time during which backup entries are retained in the client file index Backups listed in the index are browsable and readily accessible for recovery See retention policy C Host on a network such as a computer workstation NAS device or application server whose data can be backed up and recovered with the backup server software Database maintained by the NetWorker server that tracks every database object file or file system backed up The NetWorker server maintains a separate index file for each client See manual backup NetWorker server resource that identifies the save sets to be backed up on a client The Client resource also specifies information about the backup such as the schedule browse policy and retention policy for the save sets 1 Duplicate copy of backed up data which is indexed and managed by the NetWorker server Single save sets or entire volumes can be cloned 2 Type of mirror that is specific to a storage array Group of linked virtual or physical hosts with shared storage that work together and represent themselves as a single host State of a data set that fully matches an application s active view of the data at any point in time See NetWorker Management Console NMC EMC NetWorker Snapshot Management for NAS Devices 8 2 Integration Guide 49 Glossary datazone de
24. ditional file based backups Used to back up the entire volume at the block 28 EMC NetWorker Snapshot Management for NAS Devices 8 2 Integration Guide Software Configuration NAS device Supported backup types level rather than at a file level but does not support DDAR TBB and Three Party backups e ts tape silvering e dump NetApp e dump an inode based backup that traverses a file tree in directory first and file based order b Review the App Info options that the wizard has selected for the NAS device You can disable options as required c In the Advanced App Info field you may specify additional NAS specific variables supported by the client s NDMP configuration one per line d Click Next 13 Complete the Backup Configuration Summary page a Review the attributes and values listed in the summary To modify a setting click Back or click the link in the steps panel b To accept and create the configuration click Create 14 Complete the Client Configuration Results page a Ensure that the backup configuration successfully completes b Click Finish 15 If you plan to perform rollovers of snapshots you must open the NAS device Client resource and select the storage pool you wan to use for rollovers Configuring snapshots and rollovers manually In some situations you may need to configure a NAS device manually instead of using the NMC Client Configuration Wizard For NetWorker purposes NAS dev
25. e items to recover in the browse tree or type the full path of a location Mark which directories or files the wizard will recover in the table Note The wizard does not list expired save sets You can recover existing expired save sets manually by using the nsrsnapadmin command utility with the R command option or the nsrnassnap_ recover command Using nsrsnapadmin for NetWorker operations on page 44 and the EMC NetWorker Command Reference Guide provide details b Click Next 6 Complete the Select the Recovery Options page 38 EMC NetWorker Snapshot Management for NAS Devices 8 2 Integration Guide a C d Data Management and Recovery In the File Path for Recovery field select browse or type a location where the wizard will recover the files e Original path Recover to the original in place location on the NAS device e New destination path Specify a different out of place location on the NAS device or specify a directed recovery location on the NetWorker host that is running the recovery A directed recovery may specify a location configured as a CIFS or NFS file share which directs the recovery to a remote location Note In place and out of place recovery on the NAS device is not available for the following devices and conditions e VNX VNX2 and VNXe devices e Isilon devices for a remotely replicated snapshot e NetApp devices for a directory or save set although you may recover one or more files p
26. ecovery You can configure the recovery directory as an NFS or CIFS file share which enables you to recover to a remote location such as another client or a NAS device Recovery from rollover Essentially the same as recovery from a backup You perform a conventional NetWorker recovery from the backup storage media Types of NAS snapshot based backups 15 Overview of NAS Snapshot Features NetWorker clone support NetWorker cannot create clones directly from snapshot save sets Once NetWorker rolls over a snapshot to conventional tape or VTL storage media the NetWorker server can create clone copies of the backed up save sets The NetWorker server catalogs the clones in the media database Clones retain the same retention policies as the snapshots but you can modify the policies The EMC NetWorker Administration Guide provides details Snapshot lifecycle policies NetWorker software provides lifecycle policies for snapshot save sets Snapshot policies specify the following information e The time interval between the snapshots e The maximum number of snapshots stored on a NAS device after which NetWorker automatically deletes the oldest snapshots e Which snapshots NetWorker backs up to conventional storage media Backup configuration methods You can configure snapshot backups by using either the client wizard or the property windows in the NetWorker Management Console NMC interface although each has limitations e NMC C
27. eees Types of NAS snapshot based backup5S cccccsssssereceeeeseeteeees Types of NAS Snapshot reCOVETieS ccccccsssseeceecesssseeceeeeseeeeee NetWorker clone SUPPOTt seccccccsssssrececeessssecceseeesseeeeeeseesesees Snapshot lifecycle policies eeesseecccceessssrceceesesseeeeeeeeeestenees Backup configuration Methods cccccesssseccceceessseeecceseesseeeeeees Recovery INTCTIACES vi c eccsscsesoowsecuebeetanckevessevadsesdeseeedvedees E D ns Monitoring and reporting NAS snapshot operationS 00 Internationalization SUppott sssssessssssssessssssreessssssreesssssreessssssree Components of the NAS snapshot network ssssssessssssseessssssseesssssseeessssee NAS GOVIL ES iaa anti i AE AA EEA ER NOMP nVirOMnMe nt oiiire iae Nai NetWorker sonet iorn urinii eiee a e a NAAA NetWorkercilemi enron EE ETER NetWorker storage node ssssssseseeeeeeesessessssssssssssssssssessorsreeeeeee Backup storage media sssssessesssseesssssseeerssssressssssrtessssssreesssseee Licensing reg irementS sensere raah ada ea e aR R N Example NSM snapshot environments ssssseessssssresssssssreesssssreessssssreesssso Example of a snapshot and rollover to storage media Example of a snapshot from replication se eeeseeeeesseeeeeeseeeees Examples Of SnapShot reCOVETY sccccccsssssecceceessseecceeesessseeees Software Configuration Road map for NAS snapshot Configu
28. elect or define a Browse policy to specify the period during which snapshot save sets or snapshot rollovers are maintained in the online file index with easy availability b Select or define a Retention policy to specify the period during which snapshot save sets or Snapshot rollovers are maintained in the save set index before they expire and begin to be deleted c Select a Backup schedule to specify the level of snapshot rollover to be performed each day For example full on Fridays incremental on each other day Although snapshots always create a complete copy of the data NetWorker can roll over a full or an incremental level backup from the snapshot d The attribute for Remote Access does not apply to snapshots e Click Next 10 Complete the Specify the NetWorker Backup Group page a Select or create the NetWorker Group resource that will run the snapshots and rollovers for this client e To add the NAS device client to an existing NetWorker group select Add to an existing group and select one or more groups from the list The wizard lists only groups that are empty or enabled for snapshots e To create a group select Create a new group and specify the attributes b Click Next 11 If you created a new Group resource in the previous step complete the Specify the NetWorker Snapshot Policy page Note Snapshot policies apply to groups only and do not affect manual backups that you perform with the nsrnassnap_ save co
29. en you receive an input prompt you can type a specific command and its available options to perform the NetWorker options listed in the following table Table 4 Commands and options supported in nsrsnapadmin interactive mode NSM operation Command and available options Back up snapshots to I S aei Seve ae elene AW notme most esne or tape S ssid ssid v A attr val Display snapshot o s men sssr l e eliemel kwd leaca S seie save sets Delete a snapshot el Ss mer server 7e ciiemt S estel or save set 5 opid Seid 2571 44 EMC NetWorker Snapshot Management for NAS Devices 8 2 Integration Guide Command Line Operations for NAS Recovery Table 4 Commands and options supported in nsrsnapadmin interactive mode continued NSM operation Command and available options Perform a save set R e mer server lle Cilicia M movme nosel vl S recovery ssid t destination T recover host m path A attr val Perform a file by file 2 7s nsi garver I e lt item T M moure bose T browsing and heOCOV e ign Si Moms Sela Ame citetea a recovery Reset the expiration i 7 E iene SS ise Seaver e cilia v a8 eenel ie SS time fora snapshot ussig ssid save set Exit the program where e nsr_serveris the hostname of the NetWorker server e clientis the name of the NAS device e mount hostis the hostname of the mount host e yis for verbose logging The EMC
30. erver that provides primary data storage for application servers in a heterogeneous network environment A NAS device may also be called a NAS filer NDMP data server NDMP client or a data mover The NAS device organizes and presents stored data as file systems Data backup and data recovery operations can also use NDMP over a TCP IP network NDMP enables the required device drivers between the primary NAS device storage and secondary storage on tape or VTL devices The amount of data stored on NAS devices can often be large and the backup times for tape and VTL devices can exceed the available backup window By scheduling local point in time snapshot copies of the NAS data NetWorker can replicate the snapshot data and use whatever time is required to rollover the data to the backup media independently of the normal backup windows NetWorker works with NAS devices to perform the following snapshot and replication operations e Create a local snapshot save sets of specified data on the NAS device e Replicate specified snapshot data on a source NAS device to a different location on the device or to a location on a different NAS device e Perform immediate or delayed rollover of specified snapshot save sets to secondary storage by using NDMP e Apply retention policies to manage the lifecycles of snapshot replication and rollover save sets e Recover specified data from snapshots and rollovers NetWorker applies retention policies to mana
31. es individual files In place recovery of Yes_ Yes N A N A A individual files Out of place recovery of individual files Recovering data from a snapshot with the Recovery Wizard You can use the NMC Recovery Wizard to recover file system data from a snapshot stored on a Supported NAS device Procedure 1 Run NMC and in the Enterprise view select the NetWorker server name and select Enterprise gt Launch Application 2 Inthe NetWorker servers Recover view select Recover gt New Recover to launch the Recovery Wizard 3 Complete the Select the Recovery Hosts page a In the Source Host field specify the NAS device that was the original source for the snapshot files or directories you want to recover b In the Destination Host field specify where you want to recover the snapshot files and directories e Recover to the same host The wizard will later prompt you to recover to a location on the source NAS device e Select a destination host The wizard will later prompt you to direct the recovery to a location on the NetWorker host that is running the recovery Recovering data from a snapshot with the Recovery Wizard 37 Data Management and Recovery d Note For recovery on a Microsoft Windows host the NAS device must be configured with the File Server Credentials fields wizard method or the NAS file access user fields manual method Configuring the NAS device manually on page 30 provides details
32. es enclose content that the user must specify such as x ory orz Ellipses indicate non essential information omitted from the example Where to get help EMC support product and licensing information can be obtained as follows Product information For documentation release notes software updates or information about EMC products go to EMC Online Support at https support emc com Technical support Go to EMC Online Support and click Service Center You will see several options for contacting EMC Technical Support Note that to open a Service request you must have a valid support agreement Contact your EMC sales representative for details about obtaining a valid support agreement or with questions about your account Online communities Visit EMC Community Network at https community emc com for peer contacts conversations and content on product support and solutions Interactively engage online with customers partners and certified professionals for all EMC products Your comments Your suggestions will help us continue to improve the accuracy organization and overall quality of the user publications Send your opinions of this document to DPAD Doc Feedback emc com EMC NetWorker Snapshot Management for NAS Devices 8 2 Integration Guide 11 Preface 12 EMC NetWorker Snapshot Management for NAS Devices 8 2 Integration Guide CHAPTER 1 Overview of NAS Snapshot Features This chapter includes the following topics Over
33. escribed in this document might not be supported by all versions of the software or hardware currently in use The product release notes provide the most up to date information on product features Contact your EMC technical support professional if a product does not function properly or does not function as described in this document Note This document was accurate at publication time Go to EMC Online Support https support emc com to ensure that you are using the latest version of this document Purpose This document provides planning practices and configuration information for the use of the EMC NetWorker Snapshot Management for NAS devices features within an EMC NetWorker backup and storage management environment Audience This document is intended for system administrators Readers of this document must be familiar with the following tasks e Identifying the different hardware and software components that make up the NetWorker datazone e Following procedures to configure storage management operations e Following guidelines to locate problems and implement solutions Revision history The following table presents the revision history of this document Table 1 Revision history oe November R ctiction agatnet Client Name ENAS backupesecifiedhyletion 3 Restriction against Client Name for NAS backups specified by Isilon 2014 SmartConnect or that use aggregated connections October 17 Clarified requirement o
34. eted by user e Automatically remove this resource based on jobs database retention Recovering data from a snapshot with the Recovery Wizard 39 Data Management and Recovery d Review the Summary of the recovery and make any necessary corrections by going to the previous pages in the wizard e Click Run Recover The wizard performs the recovery 8 The EMC NetWorker Administration Guide provides more details on the NMC Recovery Wizard 40 EMC NetWorker Snapshot Management for NAS Devices 8 2 Integration Guide APPENDIX A Application Information Variables This appendix includes the following topics e Using Application Information variables eeesseccccessssseeccceecsssecceccesessseseeeseess e Common Application Information variables eesseseeesseeeeesseeeeeseeeeesseeeeeseeees Application Information Variables Application Information Variables Using Application Information variables As part of the manual configuration of a NAS device some NetWorker configurations require the use of special variables that provide specific control of snapshot processes To implement these controls type the variables and their values in the Application Information attribute of the Client resource for the NAS device Configuring the Client resource manually for the NAS device on page 30 provides the manual configuration procedure that can include Application Information variables Common Application Information variables The following
35. evices for rollovers to secondary storage media such as tape or VTL devices The storage node is the NDMP tape server If you plan to use NAS devices only to create and recover snapshots without rollover to secondary storage then the use of a storage node is optional Backup storage media NetWorker uses NDMP services to roll over NAS snapshot save sets to tape or VTL storage media During a rollover NetWorker catalogs the rollover save set files in its client file index Licensing requirements NAS snapshot and replication features are covered by NDMP licenses The EMC NetWorker Licensing Guide and an EMC sales representative can provide details about licensing for NSM Example NSM snapshot environments Plan the NSM NAS environment to manage data efficiently as illustrated by the following examples Example of a snapshot and rollover to storage media The following figure and description illustrates the data flow in a typical environment fora snapshot of NAS client data with rollover to tape storage A device specific operation on the NAS device creates separately addressable copies of the production data These copies are the snapshot save sets A rollover copies a snapshot save set to an NDMP tape or VTL device where NetWorker stores it as a backup save set Figure 1 NAS snapshot with rollover to storage media NetWorker server Control ae NAS device Snapshot ot r Snapshot save sets _
36. f File Server Credentials wizard method or 2014 NAS File Access User manual method for snapshot data access and recovery on Microsoft Windows hosts 01 June 18 2014 First release of this document for EMC NetWorker 8 2 SP1 covers new support for NetApp SnapMirror and SnapVault and Cluster Mode snapshots Related documentation The following EMC publications provide additional information e EMC NetWorker Online Software Compatibility Guide Provides a list of client server and storage node operating systems supported by NetWorker and other EMC information protection software versions You can access the Online Software Compatibility Guide on the EMC Online Support site at EMC NetWorker Snapshot Management for NAS Devices 8 2 Integration Guide 9 Preface 10 support emc com From the Support by Product pages search for NetWorker using Find a Product and then select the Install License and Configure link EMC NetWorker Hardware Compatibility Guide This guide provides a matrix of third party hardware and operating system combinations that are certified with NetWorker EMC NetWorker Administration Guide Describes how to configure and maintain the NetWorker software EMC NetWorker Cluster Integration Guide Contains information related to configuring NetWorker software on cluster servers and clients EMC NetWorker Installation Guide Provides information on how to install uninstall and update the NetWorker software f
37. files with the following security e On Microsoft Windows systems provide the script files with security that grants full control only to the local SYSTEM local Administrators or Backup Operators groups Otherwise the scripts will not run To set this security in Windows Explorer right click the script file select Properties and click Advanced on the Security tab of the Properties window e On UNIX systems the root user must own the script files The scripts can set only owner access permissions and the scripts must at least have run access Otherwise the scripts will not run Also the parent directory of the scripts must have at least owner run permissions and must not have write permissions for the group and world Configuring the Application Information variables 31 Software Configuration 2 Place the scripts in a directory where a user must have administrator root privileges to add modify or run the resident scripts Otherwise any backups that use the scripts will fail On Microsoft Windows systems NetWorker searches for relative pathnames in the NetWorker_install_path bin directory Include the pathnames of user defined scripts in the Application Information attribute of the property window of the application Client resource by using the following variables NSR_PRE SNAPSHOT SCRIPT pre mirror split script path NSR_POST_ SNAPSHOT SCRIPT post mirror split script_path After a backup completes verify the log
38. for the manual method In the Available Recover Types field select either NAS Snapshots or Filesystem NDMP Click Next 4 Complete the Select a NAS Snapshot page You can recover the entire snapshot save set or you can recover individual directories and individual files from the snapshot save set a In the NAS Snapshots table select the snapshot to recover from based on the snapshot time and save set volumes In Select save set select a single save set volume to mount and recover from Note You can Select only one save set for this operation Each additional save set volume will require a separate pass through the wizard In Recover mode select from the following options Browse and recover save set When you click Next the wizard will mount the snapshot volume for the save set and open the Select Data to Recover page The mount operation can take some time Note To use an existing mount point for volume access clear the Create temporary mount point for access checkbox This option is required for NetApp NAS devices on Linux operating systems which cannot use a temporary mount point e Recover full save set When you click Next the wizard will go directly to the Select the Recovery Options page d Click Next The resultant wizard step depends on the selections 5 If you selected the Browse and recover save set option complete the Select Data to Recover page otherwise skip this step a Specify th
39. ge the lifecycles of snapshot and rollover save sets Discovery of non NetWorker snapshots NetWorker can discover snapshots on the NAS device that NetWorker did not create NetWorker can manage these snapshots as follows e NetWorker catalogs all discovered snapshots as snapshot save sets 14 EMC NetWorker Snapshot Management for NAS Devices 8 2 Integration Guide Overview of NAS Snapshot Features NetWorker can roll over recover and report details of discovered snapshots but cannot delete them You can schedule discovery once per day or perform discovery manually Types of NAS snapshot based backups The type of NAS snapshot based backup that you configure depends on where you intend to create and store the snapshots as follows Local snapshot only m NetWorker creates a snapshot of specified files on the NAS device and retains the snapshot on the device The NetWorker server catalogs the snapshot as a backup in the media database and can perform a recovery from the snapshot Local snapshot with rollover Local snapshot and rollover backup NetWorker creates a snapshot of specified files on the NAS device and immediately rolls over the snapshot to conventional storage on tape or VTL media The NAS device retains the snapshot The NetWorker media database catalogs both the snapshot and the rollover as backups The NetWorker client file index catalogs the rollover The NetWorker server can perform a recovery from either the snap
40. ices are configured as NetWorker clients For example you can manually modify a NAS device configuration if you need to specify special directives or any options that the wizard does not support such as the variables described in Application Information Variables on page 41 Configuring the Group resource manually You can manually configure a Group resource for NAS snapshot backups Procedure 1 Run NMC and in the Enterprise view in the browse tree select the NetWorker server name and then launch the NetWorker application 2 On the NetWorker server s Configuration tab select Groups in the browser tree and select the item you need e To create a Group resource select the Groups icon and from the File menu click New Configuring snapshots and rollovers manually 29 Software Configuration 3 e To modify a Group resource select the client name from the list in the right panel and from the File menu select Properties Configure the Group resource attributes as you would for a standard NetWorker backup On the Setup tab configure the Snapshots attributes as follows a Select Snapshot to enable snapshot backups on NAS devices associated with the group b Select a Snapshot Policy The policy specifies how many snapshots NetWorker creates in a particular period and how long NetWorker retains the snapshots The EMC NetWorker Administration Guide provides additional details on Group Media Pool and Snapshot Policy resour
41. iles are supported provided that the set of files does not make up the entire contents of the directory e Ifa recovered file already exists at the recovery destination then you must specify an overwrite option For CLI recovery when you issue the recover command you must specify an overwrite option in the nsrsnapadmin prompt for example A NSR_ PS FILE RECOVER OPTS Y For recovery with the NMC Recovery Wizard you must specify an overwrite option e On Linux systems For CLI recovery when you issue the recover command in the nsrsnapadmin prompt you must specify that you will use the existing mount point A NSRATTR_USE EXISTING MOUNTPOINT Yes If performing an in place recovery or an out of place recovery with the NMC Recovery Wizard in the Browse and recover save set 36 EMC NetWorker Snapshot Management for NAS Devices 8 2 Integration Guide Data Management and Recovery NAS device Limitatation operation you must select Create temporary mount point for access For these operations renaming the data is not supported Renaming the data is supported only for directed recovery Recovery from Isilon local Isilon remote NetAPP VNX VNX2 VNXe snapshot replication repeater Directed recovery of Yes Yes N A Yes Yes Yes save set In place recovery of Yes Yes N A N A N A N A save set Out of place Yes N A N A N A N A recovery of save set Directed recovery of Yes Yes Yes Y
42. lient Configuration Wizard Recommended method to create and modify NAS snapshot configurations Provides the correct sequence of steps and verifications Cannot configure some special use directives and variables e NMC Client Property windows Non wizard manual method can modify most configurations for an NAS NDMP client Cannot configure replication policies used for locally replicated and remotely replicated snapshots which you must set in the wizard m Can configure uncommon directives or any special functions not supported by the wizard such as the variables listed in Application Information Variables on page 41 Recovery interfaces You can use the following interfaces to recover snapshot based data e The NetWorker Recovery Wizard is the recommended interface to use to recover data from the snapshots and conventional storage media e The nsrsnapadmin command utility provides an interactive Command Line Interface CLI session for various snapshot related operations including recovery from a snapshot and recovery from conventional storage media e The nsrnassnap_recover command provides another CLI method to recover data from a snapshot or conventional storage media The EMC NetWorker Command Reference Guide provides details of the NetWorker commands 16 EMC NetWorker Snapshot Management for NAS Devices 8 2 Integration Guide Overview of NAS Snapshot Features Monitoring and reporting NAS snapshot operations
43. mes or file systems on a application host that is created on an external disk subsystem such as a storage array or NAS device Snapshot created on a Storage array as a backup Sets of rules that control the lifecycle of snapshots These rule specify the frequency of snapshot creation how long snapshots are retained and which snapshots will be backed up to conventional storage media Restore from a snapshot backup Previously called instant restore Group of files or other data included in a single snapshot Previously called snapset LUN on the application host whose production data can be copied by snapshot 52 EMC NetWorker Snapshot Management for NAS Devices 8 2 Integration Guide Glossary storagenode 1 Computer that manages physically attached storage devices or libraries whose backup operations are administered from the controlling NetWorker server 2 Typically a remote storage node that resides on a host other than the NetWorker server T target client NetWorker client on which data is to be restored V volume 1 Unit of physical storage medium such as a disk or magnetic tape to which backup data is written 2 Identifiable unit of data storage that may reside on one or more computer disks EMC NetWorker Snapshot Management for NAS Devices 8 2 Integration Guide 53 Glossary 54 EMC NetWorker Snapshot Management for NAS Devices 8 2 Integration Guide
44. mmand e To apply an existing snapshot policy to the new group select Select an existing snapshot policy and select a policy in the table e To create a new snapshot policy select Create a new snapshot policy and specify the following attributes a Inthe Name field type a unique name for the policy You cannot rename an existing policy You must delete all references to the policy delete the policy name then create the new policy name b In the Number of Snapshots field specify the number of snapshots to be created in a day from the starting time of the snapshot savegroup Configuring a snapshot and rollover with the wizard 27 Software Configuration Note Ensure there will be enough time between NetWorker backups of the same save sets for the operations to complete A time interval that is too short will cause NetWorker to skip some snapshot backups c Inthe Retain Snapshots field specify the number of snapshots that will be actively maintained for each save set of the savegroup After this number is reached the oldest snapshot is deleted before the next snapshot is created For example if you set Number of Snapshots to 8 and Retain Snapshots to 4 then NetWorker performs a snapshot backup eight times per day but retains only the four most recent snapshots If you want a rollover only snapshot policy then set Retain Snapshots to 0 and select All for the Backup Snapshot Options setting NetWorker will automatically delete
45. mount the snapshot file system on the mount host which enables you to browse and select files to recover Browsing and recovery on Windows hosts When performing file by file browsing or performing a directed recovery from the NAS device to a Microsoft Windows host NetWorker connects to the NAS device by using the File Server credentials in the Client resource for the NAS device Microsoft Windows cannot connect to the NAS device by using different credentials than a previously established file service connection NetWorker does not use the credentials that a previously established file service connection has used NAS snapshot recovery support and limitations The following support and limitations apply to NAS snapshot recovery operations e ANAS snapshot recovery supports the following user interfaces NMC Recovery Wizard GUI nsrsnapadmin command utility nsrnassnap_ recover command for NAS devices e You can use either an existing mount point or a temporary mount point to view the NAS file system contents Linux systems must use an NFS mount point Windows systems must use a CIFS share mount point Note On Windows systems a file share connection cannot exist between the Windows system running the recovery and the NAS device with the stored data e You can recover individual files or complete file systems from snapshot save sets e You cannot combine individual files from multiple save sets in a single recovery se
46. nly Supports in place and out of place recovery of snapshot files but not directories or save sets except if the save set is a single file and only to the same volume as the source Supports directed recovery Does not support a temporary mount point for snapshot browse and recover NetApp on Linux limitation Must use an existing NFS mount point NDMP environment NetWorker software uses NDMP functionality to enable access to storage ina heterogeneous network environment NDMP uses TCP IP to control the movement of the data and specifies various device drivers to store the data on devices NetWorker server The NetWorker server manages the NAS devices and the configuration settings required to create the snapshots and perform the rollover and the recovery operations It is the Data Management Agent DMA NetWorker client NAS devices do not run NetWorker client software However to support local or remote replication you must create a NetWorker Client resource for the device The Client resource specifies the snapshot replication target and provides credentials to the NetWorker server for replication rollover and recovery operations This Client resource requirement applies only to the following NAS devices e EMC Isilon e NetApp 18 EMC NetWorker Snapshot Management for NAS Devices 8 2 Integration Guide Overview of NAS Snapshot Features NetWorker storage node The NetWorker storage node hosts and manages the d
47. ntegration Guide 41 42 42 43 44 44 44 45 47 47 48 48 49 FIGURES OANRWN PR NAS snapshot with rollover to Storage media seccccccssssseccceeeesssneceeeesesseeeeceeeeseeenes 19 Remote replication with snapshot and rollover to StOrage eessecessseeeeesreeeeeseeeeeseeees 20 In place recovery restores data to the original location on the source device 006 21 Out of place recovery restores data to a different location on the source device 22 Directed recovery restores data to the NetWorker client that runs the recovery 22 EMC NetWorker Snapshot Management for NAS Devices 8 2 Integration Guide 5 FIGURES 6 EMC NetWorker Snapshot Management for NAS Devices 8 2 Integration Guide TABLES DAUNE Revision NiIStON isien E h Eei E RS EERE NEROS 9 NAS device support and LIMITATIONS ssssssseessssssseessssssreessssssreesssssreeessssoreesssssereessssseee 17 Common Application Information variables ssssessssesessessssesssseessseessseessseesssesssreessseesee 42 Commands and options supported in nsrsnapadmin interactive mode sesseseseesesseess 44 EMC NetWorker Snapshot Management for NAS Devices 8 2 Integration Guide 7 TABLES 8 EMC NetWorker Snapshot Management for NAS Devices 8 2 Integration Guide Preface As part of an effort to improve its product lines EMC periodically releases revisions of its software and hardware Therefore some functions d
48. ons can cause problems or fail if you do not synchronize them within 10 seconds The recommended method is to use a common Network Time Protocol NTP server to obtain system time This will prevent time drift The support matrix for the NAS device that you use available from EMC Online Support provides requirement details on systems and software Replication configuration Ensure the following prerequisites for replication operations e Ensure you have correctly configured the replication policy on the NAS device before you create the Client resource for the NAS device 24 EMC NetWorker Snapshot Management for NAS Devices 8 2 Integration Guide Software Configuration Ensure you have configured the replication policy to create a snapshot when the replication operation completes Ensure you have synchronized the system times on the NAS devices and the NetWorker server The NAS device documentation provides details Storage node prerequisites If you plan to roll over the snapshot save sets to conventional storage media then a NetWorker storage node is required for recovery operations Ensure the following prerequisites NetWorker storage node 8 1 or later software is installed NDMP backup Storage devices are configured on the storage node for the rollover operations Configuring a snapshot and rollover with the wizard NMC configures NAS devices as NetWorker clients NDMP enables NAS devices to mimic NetWorker clients for
49. or clients storage nodes and servers on all supported operating systems EMC NetWorker Updating from a Previous Release Guide Describes how to update the NetWorker software from a previously installed release EMC NetWorker Release Notes Contains information on new features and changes fixed problems known limitations and environment and system requirements for the latest NetWorker software release EMC NetWorker Avamar Devices Integration Guide Provides planning and configuration information on the use of Avamar devices ina NetWorker environment EMC NetWorker Command Reference Guide Provides reference information for NetWorker commands and options EMC NetWorker Data Domain Deduplication Devices Integration Guide Provides planning and configuration information on the use of Data Domain devices for data deduplication backup and storage in a NetWorker environment EMC NetWorker Error Message Guide Provides information on common NetWorker error messages EMC NetWorker Licensing Guide Provides information about licensing NetWorker products and features EMC NetWorker Management Console Online Help Describes the day to day administration tasks performed in the NetWorker Management Console and the NetWorker Administration window To view Help click Help in the main menu EMC NetWorker User Online Help The NetWorker User program is the Windows client interface Describes how to use the NetWorker User program which is the Windows
50. pshot backup Options enable you to browse select and recover the elements of the file system For example ie 8 Server Client M _moume ROST SI recover NOST GELE where clientis the name of the NAS device Deleting a snapshot save set Deleting an snapshot save set is similar to deleting a standard NetWorker save set The nsrsnapadmin command deletes the physical snapshot from the NAS device and deletes all save sets that refer to that physical snapshot from the media database For example nsrsnapadmin d s server c client S ssid where e serveris the hostname of the NetWorker server e clientis the name of the NAS device e ssidis the snapshot save set ID You can also use the nsrnassnapck command to delete a snapshot Modifying the browse and retention periods of a snapshot save set To modify the expiration date of a snapshot type the e command at the nsrsnapadmin prompt For example G eime 9 sarya A eliene S BaLE where e timeis the date and time when the snapshot save set will expire Acceptable date and time formats are as follows mm dd yy month_name dd yy hh mm ss meridian zone m hhmm meridian zone e serveris the hostname of the NetWorker server e clientis the hostname of the NAS device e ssidis the ID of the snapshot save set you want to modify A message similar to the following appears Resetting expire time for ssid 4090300235 The message indicates that
51. r address for example fora VNX Control Station name if it differs from the NAS device name b In the NDMP Credentials fields type a User Name and Password for the user authorized to perform NDMP operations on the NAS device such as browsing the file system during configuration Storage node prerequisites 25 Software Configuration c Ifa Microsoft Windows client will access the snapshot data complete the File Server Credentials These fields are ignored by other operating system types Type a User Name and Password for the user authorized to mount and access the snapshot data on a Windows recovery host for this instance of the NAS device Each instance can have a different user d Click Next 6 Complete the Verify the NAS Device Information page a Review the NAS device information details b Click Next 7 Complete the Select the File System Objects page for NAS devices that do not support file browsing a Type a list of pathnames of file systems directories and individual files to include in the snapshot save set List each item on a separate line b Click Next 8 Complete the Specify Snapshot Location page a Specify a local or remote location for the snapshot The available snapshot locations depend on the replication policies that the storage administrator has configured on the NAS device The available locations for replication are those capable of replicating all the save set paths specified earlier in the wiza
52. ration ccccssssecccceeesssseecceeseetseees NetWorker with NAS configuration prerequiSiteS ccccccesssseeecceeeeeeees NAS device PrerequiSites ccccssssscscccsessseeccesssesseescceeesssseeeees Replication configura OMen daars Storage node prerequisites seeesssssesesssssoresesssseressssssreesssssseees Configuring a snapshot and rollover with the wizard sssesesssssseessssssseess Configuring snapshots and rollovers manually sssseesssssssessssssseesssssssreess Configuring the Group resource manually ssssesssssssessssssssesssssese Configuring a NAS device manually essssssssseessssssressssssersssssssresss Configuring the Application Information variableS eseeseseesesseseeseserrese Configuring preprocessing and postprocessing SCtiptsS eessssssseesssssssrees Data Management and Recovery SnapShot ManageMent cssesscccccssssesscccessssseeccecesssssesceeeesssssesseesessesnes Snapshot rePOrtin eccccccssssseccceccsssseeccesesssseecceesessseeseeeeeees EMC NetWorker Snapshot Management for NAS Devices 8 2 Integration Guide 13 14 14 15 15 16 16 16 16 17 17 17 17 18 es 18 18 19 19 19 19 19 iiuen 20 21 23 24 24 24 24 25 25 29 29 31 31 33 34 34 CONTENTS 4 Discovering NAS Save SetsS ccssssecccceessssecceeeesssseccesesssseeeceesesens Save Set IDs and expiration Polici S eeesessececeece
53. rd e Local snapshot The device will not replicate the selected data and NetWorker will create a snapshot of the original data e Locally replicated snapshot The device will replicate the selected data to a different location on the same device and NetWorker will create a snapshot from the replicated data e Remotely replicated snapshot The device will replicate the selected data toa location on a different NAS device and NetWorker will create a snapshot from the replicated data For example if you have defined the following replication policies on the NAS device NAS policy Local system Local path Remote Replicated path name system Local1 System_A ifs home n a ifs localrep folders Remote1 System_A ifs home System_B ifs remoterep 1 folders Remote2 Remote2 System_ A System_B ifs remoterep 2 Then the following snapshot location paths will use the corresponding NAS replication policies aaa save set location NAS policies i shone 26 EMC NetWorker Snapshot Management for NAS Devices 8 2 Integration Guide Software Configuration Snapshot save set location NAS policies ifs home folders Locali Remote1 Remote2 ifs home folders bar Locali Remote1 Remote2 Note For NetApp devices if the snapshot destination volume is written to the destination becomes the new source volume and the relationship switches b Click Next 9 Complete the Select the NetWorker Client Properties page a S
54. roll over the snapshot provide NDMP credentials in the Remote User and Password fields b Select the NAS device checkbox c Select the NDMP checkbox d In the Application information field type any optional NDMP variables you want to use in the rollover Variables must be uppercase NetWorker does not validate the variables Application Information Variables on page 41 provides details On the Snapshot Management tab ensure the following settings a In the NAS management user fields type the name and password for the user authorized to access data for example to create delete or share data for this instance of the NAS device Each instance can have a different user 30 EMC NetWorker Snapshot Management for NAS Devices 8 2 Integration Guide Software Configuration b In the NAS device management name field type the FQDN required by some devices that use a special address for data management For example the VNX or VNXe Control Station address which is different than the NAS file server address c Ifa Microsoft Windows client will access the snapshot data complete the NAS file access user fields These fields are ignored by other operating system types Type a User Name and Password for the user authorized to mount and access the snapshot data on a Windows recovery host for this instance of the NAS device Each instance can have a different user 7 When you have completed the NAS device configuration click OK 8
55. rovided the files do not make up the entire contents of a directory Examples of snapshot recovery on page 21 illustrates the recovery options In the Duplicate file options field specify how the wizard will resolve conflicts in file names or directory names e Rename the recovered file The wizard will recover the file or directory with a new name that NetWorker automatically generates This option is available for directed recoveries only e Do not recover the file The wizard will not recover the file or directory but skip it e Overwrite the existing file The wizard will replace the file content or directory content e Fail the recover The wizard will not recover any further files or directories This option is not available for directed recoveries Note For NetApp devices you must select an option otherwise the recovery fails To specify further options select Advanced Options and specify the attributes Click Next 7 Complete the Perform the Recover page a b In the Recovery Name field type a name for the recovery In the Recovery Start Time field specify the following attributes e Start recovery now is the only option that snapshot recovery supports e In Specify a hard stop time you can specify a time limit that will stop an uncompleted recovery process In the Recovery Resource Persistence field select the retain or delete option for this recovery resource e Persist this resource until del
56. s the data flow for a snapshot of remotely replicated NAS client data with optional rollover to NDMP storage media Figure 2 Remote replication with snapshot and rollover to storage Production uT Remote site NAS device ee m NAS device N jupes Fd i E data rad x Snapshot Rollover Snapehols save sets I i 1 J NAS client NetWorker server NDMP backup storage 1 ANAS client writes its production data to primary storage on a NAS device 2 Ata specified time the NetWorker server instructs the NAS device to create a remote replication snapshot of production file systems The NAS device uses its proprietary operations to create the replication on the remote NAS device e For EMC Isilon devices the production file systems to replicate are specified by the NetWorker Client resource for the device 20 EMC NetWorker Snapshot Management for NAS Devices 8 2 Integration Guide Overview of NAS Snapshot Features e For NetApp devices the device creates a local full PiT snapshot replication of the production data on the same device and then updates the remote NetApp mirror device with any new changed or deleted data At a time specified in the NetWorker Client resource for the remote NAS device the NetWorker server instructs the device to use its proprietary operations to create a snapshot replication of the replicated file systems The NetWorker server catalogs the remote snapshot as a b
57. shot or the rollover Rollover only backup NetWorker creates a snapshot of specified files on the NAS device and immediately rolls over the snapshot to conventional tape or VTL media When the rollover completes NetWorker deletes the snapshot The NetWorker server can recover only from the rollover Snapshot with replication snapshot Isilon only NetWorker creates a snapshot of specified files on a NAS device that you configured with replication policies and the device specific features replicate the files to either the same device or to a remote NAS device When this operation completes NetWorker creates a snapshot of the replicated data The NetWorker server catalogs the remote snapshot as a backup in the media database The NetWorker server can perform rollover and recovery operations from that snapshot Types of NAS snapshot recoveries The types of recovery that you can perform for snapshot based save sets depends on the location of the snapshot backup and where you want to recover the data Snapshot recovery NetWorker mounts the snapshot volume where you can you browse the save sets and select the directories or the individual files to recover n place Recovers files and directories to their original locations on the NAS device Out of place Recovers files and directories to a new location you specify on the NAS device Directed recovery Recovers files and directories to the NetWorker host that runs the r
58. ssion Browsing snapshot and rollover save sets 35 Data Management and Recovery e You can recover data from snapshots that NetWorker has rolled over to conventional storage media as you would for any conventional NetWorker backup Device specific limitations for snapshot recovery The following two tables list the snapshot recovery limitations and the support specific to each of the supported NAS devices Restore from rollover copies is supported on all supported platforms NAS device Limitatation Isilon Remote replication does not support in place recoveries and out of place recoveries Renaming the data is supported only for directed recovery Directed recoveries overwrite an already existing file VNX VNX2 In place recoveries and out of place recoveries are not supported Renaming the data is supported only for directed recovery Directed recoveries overwrite an already existing file VNXe In place recoveries and out of place recoveries are not supported Renaming the data is supported only for directed recovery Recovery of NFS volumes on Windows systems is not supported Recovery of CIFS volumes on Linux systems is not supported Directed recoveries overwrite an already existing file NetApp e in place recoveries and out of place recoveries of directories are not supported e in place recoveries and out of place recoveries of save sets are not Supported e in place recoveries and out of place recoveries of one or more f
59. sssseeceeeeseeeeee Browsing snapshot and rollover Save Sets essscecesseeeeeeseeeeeesnees Browsing and recovery On Windows NOSTS ccccsessseeeceeeeessreeeeeees NAS snapshot recovery Support and LiMitatiOnS eeeeeeeececeeessseeceeeeneee Device specific limitations for snapshot recOVEry ssseeeeseeeeeeeees Recovering data from a snapshot with the Recovery Wizard sscccceeeeeee Appendix A Application Information Variables Using Application Information Variables eee cesccccsssssecceceesssseeceeeeesseteeees Common Application Information variables ees seessseecesseeeeeseceresseeereeee Appendix B Command Line Operations for NAS Recovery Using CLI commands for NetWorker Operations cccccsssssccceeeesssereeeeeeeeees NAS SnapShot COMMANGG sscccccessssercceecessseeceeceeesseeneceesesesneees Using NsrsnapadMin Operations seeecccccsessseeccecesessseecceeessesseeeeeeeseseeeeees Example nsrsnapadmin Operations ssccccccesssercceceeessseeceeseseeees Querying with the mminfo COMMANA ssssssessssssssnsnnsnecceeecececeeceseeeseeseees Using nsrnassnap_recover Operations csscccsssseccsssseccsssccessseeeessseecseseeees Backing up with the Savegrp COMMANA ee eeesesecccceeesseeccceeeeessencceeeeeseenees How to perform a savegrp command line backup seeeeseeeeeeees Glossary EMC NetWorker Snapshot Management for NAS Devices 8 2 I
60. to manage NetWorker servers and clients The NMC server also provides reporting and monitoring capabilities for NetWorker processes Computer on a network that runs the NetWorker server software contains the online indexes and provides backup and restore services to the clients and storage nodes on the same network NetWorker software feature that provides snapshot copies of production data The software allows applications to continue to write production data during storage operations and ensures that open files are not omitted P See snapshot Set of defined rules for client backups that can be applied to multiple client groups Groups have specific policies for data set schedule browse and retention 1 NetWorker sorting feature that assigns specific backup data to be stored on selected media volumes 2 Collection of NetWorker backup volumes to which specific data has been backed up Q To produce a state in which all writes to a disk are stopped and the file system cache is flushed Quiescing the database prior to creating the snapshot provides a transactionally consistent image that can be remounted EMC NetWorker Snapshot Management for NAS Devices 8 2 Integration Guide 51 Glossary recover resource restore retention policy rollover rollover only backup save set save set ID ssid scheduled backup snapshot snapshot backup snapshot policy snapshot restore snapshot save set source LUN
61. ure the snapshot and the rollover operations by using either the Client Configuration Wizard or the manual method The following topics provide details e Configuring NAS device snapshots and rollovers with the wizard on page 25 e Configuring snapshots and rollovers manually on page 29 3 Configure any necessary Application Information variables Configuring the Application Information variables on page 31 provides details 4 Configure any necessary preprocessing or postprocessing scripts Configuring preprocessing and postprocessing scripts on page 31 provides details 5 Test the configuration NetWorker with NAS configuration prerequisites Verify the basic compatibility of all systems used for NetWorker operations Components of the NAS snapshot network on page 17 provides details The following sections describe the prerequisites for the hosts involved in NetWorker operations NAS device prerequisites Ensure that the NAS device is installed with the prerequisite software for snapshot and rollover operations e EMC Isilon None required e EMC VNX or VNX2 None required e EMC VNXe VNXe Unisphere CLI available on support emc com e NetApp NetApp Manageability SDK available from NetApp Ensure options httpd admin enable is set to ON Optionally options httpd admin ssl enable may be set to ON for HTTPS access Ensure that the NAS device and NetWorker server have the same system time Snapshot and replication operati
62. vice file index file system group host hostname live backup logical unit LUN logical volume manager LVM manual backup media D Group of clients storage devices and storage nodes that are administered by a NetWorker server 1 Storage unit that can contain a backup volume A device can be a disk drive autochanger or tape drive that is connected to the server or storage node 2 General term that refers to storage hardware 3 Access path to the physical drive when dynamic drive sharing DDS is enabled F See client file index 1 Software interface used to save retrieve and manage files on storage media by providing directory structures data transfer methods and file association 2 The entire set of all files 3 Method of storing files G One or more client computers that are configured to perform a backup together according to a single designated schedule or set of conditions H A computer on a network Name or address of a physical or virtual host computer that is connected to a network L See rollover Logical storage space on a Storage array that is addressed by SCSI or Fibre Channel protocols Multiple LUNs can be used to represent a storage volume Software that controls disk resources by mapping data between a logical view of storage space and the actual physical disks M Backup that a user initiates from the client also known as an on demand unscheduled or ad
63. view of NAS Snapshot Features NetWorker snapshot management for NAS feature description Components of the NAS snapshot network scesscceesrcceessreetesseeesesseeeseseneerens re i SANS Pe PENIS T E E Example NSM Snapshot environMents sssscccccessssersccecessssnecceecesssseeeeesesssenes 13 Overview of NAS Snapshot Features NetWorker snapshot management for NAS feature description The EMC NetWorker 8 2 server software includes optional features to enable NetWorker snapshot management for network attached storage NAS also called NSM for NAS Supported NAS devices are EMC Isilon EMC VNX EMC VNX2 EMC VNXe and NetApp NAS devices are configured as clients of the NetWorker server for example by using the Client Configuration Wizard but you do not install NetWorker client software on a NAS device NAS snapshot and replication features are covered by NDMP licenses Before you plan configure and administer the snapshot environment become familiar with the concepts in this chapter You will need an advanced working knowledge of the NAS devices that you will use with NetWorker snapshot management The EMC NetWorker Hardware Compatibility Guide provides details on NAS versions that NetWorker supports The EMC NetWorker Release Notes provides the latest details on NetWorker features support fixed problems and known problems with workarounds NAS snapshot operations A NAS device is a dedicated file s

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