easyRAID Q16 Hardware User Manual
Contents
1. No Name Description Cooling fan 1 System cooling fan 2 Host Port 2 Connects to the host server Secondary SCSI channel 3 Host Port 1 Connects to the host server Primary SCSI channel 4 Cooling fan 2 System cooling fan 5 Power Supply AC In Connects to a 100 240 VAC power source 6 Power Supply 2 Removable redundant power supply 2 7 Power Supply Handle For power supply removal 8 Power Supply Switch Switches the power on or off 9 UPS port Data port for uninterruptable power supply 10 Modem Port Connects to a modem for sending remote alerts 11 RS 232 Port Connects to a VT100 terminal or equivalent 12 Ethernet Port Used for browser based configuration 13 Power Supply AC In Connects to a 100 240 VAC power source 14 Power Supply 1 Removable redundant power supply 1 15 Power Supply Handle For power supply removal 15 sjuauodulo uoneinByuo5 siseg Z sjueuodwoy uoNein yuog seg Z easyRAID Q16 Serial ATA Disk Array Systems ERQ16 F2R3 Rear View kel BE ome NO eE Jo AG E Jo Rec Ze2. me 16 15 14 13 12 11 10 9 8 7 6 No Name Description 1 Cooling fan 1 System cooling fan 2 Port select switch Selects speed for host ports 1 and 2 Up 2 Gbps e Down 1 Gbps 3 Host Port 1 Connects to the host server Primary fibre channel 4 Host Port 2 Connects to the host server Secondary fibre channel 5 Cooling fan 2 System cooling fan 6 Power Supply AC In Connects to a 100 240 VAC power source 7 Power Supply 2 Removable redundant power supply 2 8 Power Supply Handle For power supply removal 9 Power Supply Switch Switches the power on or off 10 UPS port Data port for uninterruptable power supply 11 Modem Port Connects to a modem for sending remote alerts 12 RS 232 Port Connects to a VT100 terminal or equivalent 13 Ethernet Port Used for browser based configuration 14 Power Supply AC In Connects to a 100 240 VAC power source 15 Power Supply 1 Removable redundant power supply 1 16 Power Supply Handle For power supply removal 16 easyRAID Q16 Serial ATA Disk Array Systems Installing Disks This section describes how to install disks in the disk array system Read Understanding RAID on page 3 to decide how many disks are required 1 Unlock the front panel door then pull it open 3
3. Maximum Data Rate SCSI Maximum SCSI Bus Length in Megabytes Standard Number of Devices in Meters per Second Ultra320 12 320 15 Ultra160 12 160 15 Ultra2 12 80 15 Ultra Wide 1 5 40 7 Fast Wide 3 20 15 Ultra 1 5 20 7 Fibre Channel Interface The ERQ16 F2R3 has dual 2 Gbit fibre channel interfaces with SFP connectors for linkage to a fibre channel switch or host computer interface card With the correct SFP transceiver and optical cable the following transmission distances can be achieved Component Optical SFP Transceiver LC Optical Cable Short Wave Long Wave Maximum Cable Length 50m 10 Km Hard Disks Supply the number of SATA disks needed for your application Refer to Understanding RAID on page 3 to determine the number of disks needed sjuawelmbay WEIS S Malniano L 2 Basic Configuration This chapter describes disk array system connections and disk installation Contact your supplier if any of the following items are missing or damaged Caution A The disk array system is heavy Be careful when lifting and moving it GUI Installation Front Panel Keys CD ROM A O PA Neg HPD to VHDC Ultra320 SCSI Terminator Cable ERQ16 U4R3 Only Cable ERQ16 U4R3 Only ERQ16 U4R3 Only Fix Screw Pack ci pack Hardwa M5 user Manuals NS Fix Screw Pack UNC 10 32 Rails Rail Extenders 11 sjueuodwoy uoNein lyuog seg
4. 20 easyRAID Q16 Serial ATA Disk Array Systems Connecting a network Connect the network cable to the RJ 45 port at the rear of the unit 2 Basic Configuration Making Connections 21 easyRAID Q16 Serial ATA Disk Array Systems Connecting and Turning on the Power 1 Plug a power cable A to a power connector at the rear of the unit then plug the second power supply cable into the second power connector B Note x The system is equipped with auto switching power supplies that can run on 100 to 240 VAC suonoauuo uiye uonesinByuoy oiseg Z 2 Switch on both power supplies 22 easyRAID Q16 Serial ATA Disk Array Systems Mounting ina Rack When the disk array system is completely set up it can be installed in a standard 19 inch rack Follow the instructions in this section to install the disk array system in a rack 1 Clip eight rack nuts supplied with your rack into the rack taking care that they corre spond with the mounting points on the rails 2 Extend both of the rails so that they are the right length to fit in your rack 3 Bolt the rails into the rack using the rack bolts supplied with your rack ji h y I a el lo 2 so You will need four nuts and bolts not included for each rail two at the front and two at the back 4 Tighten the locking screws when they are the correct length 5 Slide the disk array system into the
5. Systems Placement Notes e The disk array system LCD panel can be damaged by exposure to direct sunlight Limit exposure to subdued or indirect sunlight only e The disk array system should be used only in clean environments that are free from airborne contaminants such as dust dirt and smoke Excessive moisture or oil particles in the air can also hinder disk array system performance To reduce the possibility of data errors caused by electromagnetic interference locate the disk array system at least five feet away from electrical appliances and equipment that generates magnetic fields Power Supply Safety Notes To avoid electric shocks do not use an extended power cord or an outlet that does not match the disk array system plug or leaves the plug exposed The disk array system has a 3 wire grounded plug The third pin connects to ground do not remove it If the power cord or plug is damaged or worn unplug it immediately and contact a qualified service technician for maintenance To avoid fire or electric shocks do not overload electric power out lets 1 Overview The disk array system uses groups of inex pensive disks to provide flexibility when balancing data availability access rate and capacity management needs High data availability is achieved by using the fault tolerance features of RAID Redundant Array of Inexpensive Disks hot spare disks with automatic on line rebuild hot swap disks and
6. rack and bolt it into place with the supplied fixing screws Wel Il p H BJ Caution A This product is heavy Attempting to install the disk array system in a rack by yourself could result in injury or damage to the product 23 yoey e ul Bununoyy uolesnByuog seg Z easyRAID Q16 Serial ATA Disk Array Systems Installing the Rail Extenders Follow these instructions to fit the rail extenders if required 1 If required bolt the rail extenders into place as shown using the small bolts provided 2 Slide the disk array system into the rack and bolt it into place with the supplied fixing screws yoey e ul Bununoyy uoneinbyuog seg Z Note The rail extenders may be required to allow the disk array system room for the front door to open correctly 24 3 Maintenance Replacing a Disk A disk failure is indicated when the Power Error LED at the front of the drive tray turns red and the audible alert sounds Note SK Turn off the audible alert by pressing the Up 4 and Down y function but tons on the front panel twice simultaneously The LCD panel displays the failure with the symbol R or W R indicates a disk failure or error and W indicates that there are too many bad sectors on the disk Example e Disks 1 to 5 are members of array group 1 e Disks 6 to 10 are
7. Align the rear of the disk with the rear of the disk tray 4 Insert the disk into the disk tray and fix into place with screws supplied with the disk 17 sysiq Bumjejsu UONeINBIUO oiseg Z sys q Bumjejsu uoneunByuog oiseg Z easyRAID Q16 Serial ATA Disk Array Systems 5 Slide the disk tray back into the empty slot A then slowly close the disk tray handle B 6 Repeat steps 2 to 5 until all of the required disks have been installed 7 Push the front panel door closed and lock it 18 easyRAID Q16 Serial ATA Disk Array Systems Making Connections After the required number of disks have been installed external connections to the disk array system must be made This section describes how to make all of the necessary connections Connecting the Host Interface The disk array system has either dual SCSI interfaces or dual fibre channel interfaces Refer to the following sections to make host interface connections Small Computer Systems Interface The ERQ16 U4R3 has dual Ultra320 SCSI interfaces Follow these instructions to make connec tions 1 Connect the SCSI terminator A to the bottom connector of the ERQ16 U4R3 host port 1 primary SCSI channel at the rear of the disk array system 2 Connect the Ultra320 SCSI cable B to the top connector of the ERQ16 U4R3 host port 1 primary SCSI cha
8. Q16 Serial ATA Disk Array Systems Upgrading Memory The disk array system takes a single 200 pin PC200 DDR SDRAM SO DIMM with a maximum capacity of 1 GB Follow these instructions to upgrade the memory 1 Loosen the screws holding the controller cage in place 2 Lift the handle and slide the controller cage out of the chassis 3 Carefully remove the cables from the daughter board remove the three screws and lift it away from the array group controller Daughterboard Array group controller 4 Pull the DIMM retaining clips away from the DIMM the DIMM springs out of the socket Remove the DIMM 28 easyRAID Q16 Serial ATA Disk Array Systems 5 Gently push the new DIMM into the socket at 45 degrees then push the corners of the DIMM down The DIMM is secured by the DIMM retaining clips Note The DIMM module will fit in only one direction Do not force the DIMM into place 6 Replace the daughter board on the array group controller taking care to align the con nectors 29 Aowa BuipelBbdn soueusjuleyy Appendix Hardware Specifications Item Specification Host Interface SCSI Ultra320 ERQ16 U4R3 or Fibre Channel ERQ16 F2R3 Disk Interface 16 x SATA 150 MB s Dimensions 132 mm H x 446 mm W x 574 mm D Weight 25 Kg without disks RAID Functions Raid levels 0 1 0 1 3 5 30 50 JBOD or NRAID Hot spare support Disk hot swapping with automatic online re
9. Z easyRAID Q16 Serial ATA Disk Array Systems Components Closed Front Panel No 0999799 O 05050 59505004 090 O OIEA LARREA Dodd 9090990090998 090 03090305053053050905050P20 D505 050 08080828 9525259590 02020809096209080 452090 00082800082800002800 2800082806082800082808 9 0090 o o So 80802080 8080802020 90908090909080909809090808 80808080808 a8 a8 o8a8 a8 08080808 a8o8o8a8a8o8080 102626869680862808696868680869686808080868080 059595950 67 090 0908 050 0908 02900 TSTSUSTScSUSTSTSTSTSTSTSTSTSTeTSTSCcHTSTETSTScSTSTSTSTSTSTSTSTSTSTSTSTSTSTSTSTSTSTSTSTSTSTSTSTSTSTSTSTETSTSTET 0 002020092000082090402020P 02040000 40092002020000009000020000000080020090000000090000000009800000008 1959 O O q 0904 00909009095 20000000000 O50 O O 09 0 0 9 9 0000000 5 000 Name LCD panel 12026PG2G96PG759695 9595969690960 Description Displays warning operating and configuration information Power on indicator Indicates the disk array system power is on Power supply fail indicator Indicates a failed power supply Host computer access indicator Indicates data transfer between the disk array sys tem and the host computer Up function button Moves up in the LCD menus Down function button Mov
10. a grounded type of power outlet If an extension cord or a power center is used with the disk array system make sure that the total current con sumption of all products plugged into the wall outlet does not exceed the ampere rating Do not place the disk array system where the cord will be walked on Never push any kind of object into the disk array system through cabinet gaps and openings since they may touch dangerous voltage points and cause a risk of fire or electric shock Unplug the power cord from the wall outlet before clean ing Keep the disk array system dry Do not use liquid cleaners aerosol cleaners or a wet cloth Use a damp cloth for cleaning DA Except as specifically explained in this User Manual do not attempt to service the disk array system by yourself Opening or removing the covers may expose you to dangerous voltages 1Q yn Unplug this product from the wall outlet and refer servic ing to qualified service personnel under the following conditions If the disk array system has been exposed to water or any liquid If the disk array system has been dropped or the cabinet damaged Users should not remove the cover na ua Disconnect all power supply cords before servicing BuljpueH pue aed suonon 1su jajes jueyodu 998J31d Supuey pue aed suonon 1su jajes jueyiodu 39P 19 A d easyRAID Q16 Serial ATA Disk Array
11. building Multiple RAID max 8 O S independent and transparent 64 MB 1 GB DDR SDRAM LCD panel operation indicator Audible alarm disable alarm Optional battery backup for disk array status LED indicator on disk failures Disk Array Func tions Connectors 4 x 2 Gbit Fibre ports 2 channels ERQ16 U4R3 model only 4 x Ultra320 SCSI ports 2 channels ERQ16 F2R3 model only 1 x RS 232 Serial port 115200 n 8 1 1 x RJ 45 Ethernet port 10 100 Mbps Redundant 1 1 460Watt 100 240 VAC 47 63 Hz 6 3A 10 Over voltage current power and short circuit protection LED indicates power status Operating temperature 0 C 50 C Operating humidity 20 90 Output 5V 3 3V 12V Power Supply Warranty 3 year warranty Safety UL CE and FCC Class B 31 suoneoyioads alempieH xipuaddy easyRAID Q16 Serial ATA Disk Array Systems Item Specification coment CPU Intel 180321 64 bit RISC microprocessor Disk Interface Serial ATA Disk Channels 16 channels Disk Interface Chipset Marvell MV88SX8050 Memory Type PC200 DDR 200 pin SO DIMM Memory Sockets 1 Memory Size Up to 1 GB LCD Interface One LCD panel 2 lines by 16 characters Button Interface Up Down Enter and ESC Battery Backup Interface Yes Daughter Board Interface PCI X 64 bit 66 133MHz Backplane Interface Compact PCl connector Pe Disk Channel Suppor
12. easyRAID Q16 Hardware User Manual Ultra 320 SCSI to Serial ATA amp Fibre Channel to Serial ATA Disk Array Systems Version 1 0 ERQ16 U4R3 Ultra 320 SCSI to Serial ATA Disk Array System amp ERQ16 F2R3 Fibre Channel to Serial ATA Disk Array System Hardware User Manual Table of Contents ON i Chapter 1 Overview FOatureS Ai death Rieu Hu 2 Understanding RAID en oo a daa ia ae a E aa A AAE AET Koosa adios 3 NRAID sie nn ne E E E 3 Just a Bunch Of Disks ipren a aaa AEA ERAEN 3 RAID Levels umi in ig nahe 3 HotSpare DISKS ii A We AP valley Nels 6 RAID Combinations E TETEA T E EEE EET OE OTT 6 summary of RAID Levels usrtonosn a 7 System Requirements 0us00sennennnennnennennnennnennnennnennonnnnnnnnnnnnnnnnnnnnnnnnnnnn 8 Operating Environment iii er 8 VT100 Terminal Settings cion iii tad lord iiadns 8 Host Interface nenn iaa caca 9 Flard DISKS sa 9 Chapter 2 Basic Configuration Unpacking a 11 GOMPONentSs icccecech ds doc Seaceuccestacadtcotdiendsstcag dodo dre cdactpuacstccrvindced 12 Close Front Panel anne da 12 Open Front Paniel masias talca otrora lead 13 Disk Tray ein 14 ERQTOUAR Rear VIEW are ee 15 ERQ16 F2R3 Rear V EW 2 ie 16 installing DISKS o od leise 17 Making Connections sida 19 Connecting the Host Interface u 19 Connecting a network u ii 21 Connecting and Turning on the Power uueensessssnnnnnnnnennnnnnnnnnnnnnnnnnnnnnnnnnn nn 22 a A A 23 Installing the Rai
13. es down in the LCD menus NIOO Bb OJN Enter function button Selects a menu item or confirms a choice or entry Escape function button Returns to the previous LCD menu without making changes oOo Front panel door lock Secures the front panel door easyRAID Q16 Serial ATA Disk Array Systems Open Front Panel 1234 5 6 78 9 10 1112 13 14 15 16 17 No Name Description 1 16 Disk trays 1 to 16 Removable hot swap disk trays 17 Front panel door Protects the disks and houses the LCD Panel sjuauodulo uoneinByuo5 siseg Z stusuodwon uoneinByuo5 seg Z easyRAID Q16 Serial ATA Disk Array Systems Disk Tray Front 4 5 L 3 fle OS5nnonnanonnsn 528888888858 DJ OO No Name Description Power Error indicator LED Different colors indicate different disk states e Green Disk online i e Orange Disk full e Red No disk oo Indicates that the disk is being accessed 2 Access indicator LED e Blue Disk access 3 Tray handle Releases the disk tray 4 Push Button Push the button to release the Disk tray handle 14 ERQ16 U4R3 Rear View easyRAID Q16 Serial ATA Disk Array Systems
14. g delivers a high access rate and parity delivers good data availability The sin gle parity disk is a bottleneck on sequential writes since parity must always be written to the sin gle parity disk RAID 3 consists of two or more disks used for data and one disk used for fault tolerant data The total capacity of RAID 3 is the sum of the capacities of each data disk Add disks until the desired capacity is reached then add one more disk for fault tolerance RAID 3 is used by the following applications that request large amounts of data sequentially e Processing of graphical or video images e Processing of CAD CAM files RAID 3 has the following distinctive features e Excellent performance for data transfer characteristics e Not well suited for transaction processing or other I O request intensive applications Givy Buipuejsispun MalAJaAC L GIVy Buipuejslapuf Manero L easyRAID Q16 Serial ATA Disk Array Systems RAID 5 P D A Fre Coil Array Moscato Phy Software Provides Logical to Physical Mapping ae 4 Os EP 16 17 29 E P 32 P 44 45 Disk 1 Disk 2 13 Disk14 Disk15 Disk16 Physical In RAID 5 data is divided into pieces the parity of these pieces is calculated and the pieces and parity are written to separate disks in parallel The parity is written to a different disk each time Parity provides redundant information about the data on other disks If a single dis
15. gical to Physical Mapping Disk 1 Disk2 Disk 3 Disk 4 15 Disk16 Physical In RAID 0 data is divided into pieces and written to all disks in parallel This process is called striping because the pieces of data form a stripe across multiple disks This improves access rate 3 diyy BulpuejsiopugQ M Q L diyy Buipuejsispun Manero L easyRAID Q16 Serial ATA Disk Array Systems but makes availability lower since there are more disks and failure of a single disk causes failure of the array A RAID 0 array is unsuitable for data that can not easily be reproduced or for data that must be available for critical system operation RAID 0 consists of two or more disks of equal capacity The total capacity of RAID 0 is the sum of the capacities of each disk Disks are added until the desired total capacity is reached A RAID 0 array is useful in the following situations e Storing program image libraries or run time libraries for rapid loading A backup exists because these libraries are usually supplied on read only media e Storing large tables or other structures of read only data for rapid application access This data should be backed up so that it can be recreated in the event of a failure e Capturing data from external sources at very high data transfer rates A RAID 0 array is not useful in the following situations e Applications that make sequential requests for small amounts of data These application
16. k fails then the data on the other disks is used to regenerate the data on the failed disk Striping delivers a high access rate and parity delivers good data availability The bottleneck caused by the single parity disk of RAID 3 is not present in RAID 5 since parity is stored on all disks RAID 5 consists of two or more disks used for data and one additional disk used for fault tol erence The total capacity of RAID 5 is the sum of the capacities of each data disk Add disks until the desired capacity is reached then add one more disk for fault tolerance RAID 5 is best used with applications whose data has the following characteristics e The data is worth protecting but not as much as RAID 1 e High read data rates e Small proportion of writes to reads Hot Spare Disks A hot spare disk is a standby disk that is not used for data storage unless a RAID member fails If a disk failure occurs the failed RAID member is replaced by the hot spare disk without user intervention This improves data availability since the RAID is able to tolerate more disk failures with a hot spare disk RAID Combinations RAID levels may be combined in the following hierarchies e RAID 0 1 is a RAID 1 consisting of RAID 0 members e RAID 30 is a RAID 0 consisting of RAID 3 members e RAID 50 is a RAID 0 consisting of RAID 5 members Summary of RAID Levels easyRAID Q16 Serial ATA Disk Array Systems The following table summarizes the performance characte
17. l Extenders u ici ee 24 Chapter 3 Maintenance Replacing a Disk une ii 25 Replacing a Power Supply uunnsssssessesnnsnnnennnnnnnnnnnnnnnnnnnnnnennnnnnnennn nn nn nn nn 26 Upgrading Memory 2222242444nsenneennnnnnennnnnnnennnnnnnennennnnnnnennnennnenn nn 28 Appendix Hardware Specifications cccccccccnooocnccnnnnnnncnononoronenenoncnonononononennnnnnnononananenennns 31 Preface About this Manual This manual is designed to make the disk array system as easy to use as possible Information contained in this document has been checked for accuracy but no guarantee is given that the con tents are correct Information and specifications are subject to change without notice Copyright Notice Copyright 2004 All rights reserved This disk array system and related documentation are protected by copyright and are distributed under licenses restricting their use copying and distribution No part of this documentation may be reproduced in any form by any means without prior written authorization and its licensors if any Conventions Caution A This symbol is used to remind users to pay attention to important descriptions regarding usage and maintenance repair or additional important information related to this disk array system Note led This symbol is used to remind users of useful information that can make procedures such as configuration easier to accomplish BuljpueH pue aed s
18. members of array group 2 1111122222WR in e Disk 11 has too many bad sectors e Disk 12 has an error or a fault Disks are hot swappable which means that they can be inserted and removed while the disk array system is powered on and operating Follow these instructions to replace a failed disk Unlock the front panel door then pull it open Pull the tray handle away from the disk tray to release it and pull the disk tray out Remove the screws from the failed disk then remove the disk from the disk tray Align the rear of the new disk with the rear of the disk tray a AGOD DN Insert the new disk into the disk tray Note x The new disk must have the same or a greater capacity than the faulty disk that was removed If the disk capacity is smaller the audible alert sounds and the auto rebuild operation doesn t start For best performance it is recommended that the new disk be identical to the failed disk 6 Attach the disk to the disk tray with the screws that came with the disk 7 Slide the disk tray back into the empty slot then close the disk tray handle 8 Push the front panel door closed and lock it 25 iddns Jamog e Buloejdey soueusjuley easyRAID Q16 Serial ATA Disk Array Systems Replacing a Power Supply The disk array system is equipped with a Power Supply Fail Indicator LED at the front of the unit that turns red when one of the power supplies fails The message Power x failure also ap
19. nel ERQ16 F2R3 host interfaces e Audible alarm disk tray LED and LCD panel failure indicators e Configuration via the front panel or RS 232 interfaces easyRAID Q16 Serial ATA Disk Array Systems Understanding RAID Read this section to understand how to balance data availability access rate and capacity man agement needs NRAID NRAID Non RAID is an array that concatenates the space of all hard disks linearly and forms a large logical disk The space presented by the NRAID array starts sequentially from the space of the first member disk to the last member disk without striping mirroring or parity Justa Bunch Of Disks Just a Bunch Of Disks JBOD consists of two or more disks that can be different sizes Disk 1 is completely filled then disk 2 disk 3 and so on until the final disk is full The total capacity of JBOD is the sum of the capacities of each disk Disks are added until the desired total capacity is reached JBOD is used in the following situations e Building useful capacity from disks that are too small to be individually useful e Making capacity management easier since the user only sees one logical disk JBOD doesn t improve data availability or access rate when compared with a single disk RAID Levels The overall arrangement of disks in RAID is called the RAID level Read this section to under stand RAID levels RAID 0 LA Disk Ar ay Controller I A e o Software Provides Lo
20. nnel at the rear of the disk array system 19 suonoauuo uiye uoesinByuog oiseg Z easyRAID Q16 Serial ATA Disk Array Systems Fibre Channel Interface The ERQ16 F2R3 has dual 2 Gbit fibre channel interfaces Each interface can be used with optical or copper transceivers and cables Follow these instructions to make optical connections 1 Insert fibre cable into the ERQ16 F2R3 host port 1 primary fibre channel at the rear of the disk array system suonoauuo uiye uoneInbByuoo oiseg Z Fibre Channel Daisy Chaining Four port models can be daisy chained as shown in the following diagram r a 6 p h al Host Port 1 Host Port 2 al NIT ANN O BS GI ED E m MODEM UPS Jo o Host Port 1 Jost Port 2 a I EHE pA A E AD Term MODEM UPS 8 a 00 J O 0 o C Edo AE EI Term MODEM UPS
21. pears on the LCD panel where x refers to power supply 1 or 2 and an audible alert sounds Note Ti Turn off the audible alert by pressing the Up 4 and Down y function but tons on the front panel twice simultaneously Power supplies are hot swappable which means that they can be inserted and removed while the disk array is powered on and operating Follow these instructions to replace a failed power sup ply 1 Identify the power supply that has failed eL A A e OL A C Power Supply 1 Power Supply 2 2 Remove the power cable from the power supply connector at the rear of the unit Note The system is equipped with auto switching power supplies that can run on 100 to 240 VAC 3 Loosen the power supply retaining screw 26 easyRAID Q16 Serial ATA Disk Array Systems 4 Pull the power supply handle out 5 Remove the faulty power supply by pulling the power supply handle and pressing the release catch Release V3 Sa catch 6 Insert a new power supply 7 Push the power supply handle into place 8 Tighten the power supply thumbscrew 9 Reconnect the power cable 27 Ajddns Jamog e Bulejday esoueusjuley Aowa BuipelBdn soueusjureyy easyRAID
22. power supplies independent SATA disk controllers and dual host controllers Our confidence in the disk array system is backed by a three year warranty A high data access rate is achieved by combining the individual data rates of SATA disks in a RAID configuration SATA disks lack some of the features of SCSI disks but are just as fast when used with a high performance RAID controller In the disk array system RAID is con trolled by a high performance CPU which transfers data through dual host interfaces at the max imum possible rate Flexible data capacity management is achieved with on line RAID expansion RAID capacity division into slices and multiple logical RAIDs Management is performed through front panel RJ 45 or RS 232 interfaces Sanjea4 MAIAIOAQ easyRAID Q16 Serial ATA Disk Array Systems Features The main features of the disk array system are listed as follows Refer to the specifications table on page 31 for more detailed information e Operating system independent NRAID JBOD RAID 0 1 3 5 0 1 30 or 50 array groups e On line expansion e Allows division of array groups into slices each mapped to a LUN e Hot spare disk and automatic on line rebuild e Two hot swap power supplies if one fails the others take over without interruption e Twelve SATA channels e Fast 64 bit RISC CPU based RAID controller with up to 1 GB of DDR cache memory e Dual Ultra SCSI ERQ16 U4R3 or fibre chan
23. ristics of each RAID level A high availability or access rate number indicates high availability or quick access rate Array Access Capacity Group Availability Rate Utilization Description NRAID 1 1 100 Sum of all disks in the array JBOD 1 1 100 Data is distributed by filling each disk in turn RAID 0 1 5 100 Data is divided into pieces and written to all disks in parallel RAID 1 5 2 50 Data is duplicated on both disks RAID 3 3 3 Between67 Data is divided into pieces the for 3 disks to parity of these pieces is calcu 94 for 16 lated and the pieces are written disks to separate disks in parallel with the writing of the parity to a dedi cated disk RAID 5 3 3 5 Between67 Data is divided into pieces the for 3 disks to parity of these pieces is calcu 94 for 16 lated and the pieces and parity disks are written to separate disks in parallel The parity is written to a different disk each time RAID 0 1 45 5 50 RAID 0 1 is a RAID 1 consisting of RAID 0 members RAID 30 4 4 Between67 RAID 30 is a RAID O consisting for 6 disks to of RAID 3 members 88 for 16 disks RAID 50 4 4 5 Between67 RAID 50 is a RAID O consisting for6 disks to of RAID 5 members 88 for 16 disks IVY BulpueysigpuQ MelnIenO L syu wanb y WEIS S MEINISAO L easyRAID Q16 Serial ATA Disk Array Systems System Requirements Ensure that the following requirements are met before installing the disk array
24. s spend most of their I O time waiting for disks to spin whether or not they use striped arrays e Applications that make synchronous random requests for small amounts of data RAID 1 ceneni Software to Physical Mapping SA A EA TS nn Y y Mana PES Logica gt PAN Disk 2 Disk 3 Disk 4 15 Ea ee ae ia ee ee ee Disk 1 Physical Optional In RAID 1 data is duplicated on two or more disks to provide high access rate and very high data availability This process is called mirroring If a disk fails the RAID controller directs all requests to the surviving members A RAID 1 array is useful in the following situations e Availability requirements are very high e High access rate is required e Cost of storage is a secondary issue easyRAID Q16 Serial ATA Disk Array Systems RAID 3 Omen Eo Array Laster Software Provides Logical to Physical Mapping pe ie un on Rise 4 JJ Disk 1 Disk2 Disk 3 Disk 4 15 Disk16 Physical In RAID 3 data is divided into pieces the parity of these pieces is calculated and the pieces are written to separate disks in parallel with the writing of the parity to a dedicated disk This process is called striping with parity The parity disk stores redundant information about the data on other disks If a single disk fails then the data on the other disks is used to regenerate the data on the failed disk Stripin
25. system Operating Environment 15 cm 6 inches of space around the disk array system for proper ventilation ambient temperature of 5 C to 40 C 40 F to 104 F ambient non condensing relative humidity of 10 to 85 dust smoke and oil free environment no large magnetic fields such as those generated by a high voltage power cables and motors etc no direct sunlight a flat stable surface capable of supporting the disk array system VT100 Terminal Settings Refer to the following table for a summary of VT100 terminal settings required to communicate with the disk array system Refer to your system manual for instructions on setting up the VT100 terminal settings Item Required Setting Connection Serial Port COM1 or COM2 Protocol RS232 Asynchronous Cabling Null Modem cable Baud Rate 115200 Data Bits 8 Stop Bit 1 Parity None easyRAID Q16 Serial ATA Disk Array Systems Host Interface The disk array system has either dual SCSI interfaces or dual fibre channel interfaces Refer to the following sections to understand host interface system requirements Small Computer Systems Interface The ERQ16 U4R3 has dual Ultra320 SCSI interfaces that are compatible with previous SCSI standards Refer to the following table to understand SCSI bus requirements Note SK Subtract the internal cable length 30 cm from the maximum SCSI bus length to calculate the maximum external SCSI cable length
26. t 16 channels Disk Number Supported 16 disks Disk Connector Type Serial ATA 1 Temperature Sensors 8 Power Connector Type 2x Slot 2 Fan Connector Type 2x Slot 2 32
27. uonon 1su jajes jueyodu 39P 19 A d easyRAID Q16 Serial ATA Disk Array Systems Important Safety Instructions Care and Handling Before starting take a few minutes to read this manual Read all of these instructions and save this manual for later reference Protect the disk array system from extremely high or low temperatures Let the disk array system warm or cool to room temperature before using it Protect the disk array system from being bumped or dropped Do not place the disk array system on an unstable cart stand or table It may fall causing serious damage to the product Keep the disk array system away from magnetic forces Do not use the disk array system near water Keep the disk array system away from dust sand or dirt Gaps and openings in the cabinet are provided for venti lation Never block or cover these openings because the disk array system may overheat and become unreli able Don t place the disk array system on a bed sofa rug or other similar surface Do not place the disk array system near or over a radia tor or other heat source Refer to the rating plate for the correct voltage and ensure that the appliance voltage corresponds to the supply voltage easyRAID Q16 Serial ATA Disk Array Systems The appliance must be grounded The disk array system is equipped with a 3 wire grounded type of power cord This power cord will only fit into
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