easyRAID S16-U4R4 Ultra 320 SCSI to Serial ATA
Contents
1. oo00000 oo000000000 oo000000 oo000000 oo00000000 oo00000 OOO0OOO0OOOCO OO0O0O0O0OOOOCO OOOOOOOOOCO OOO0OOOOOOOOO OOOcCOOOOOOOOOOQ ooooooooooOooOOQ ooo00000000 0000000000000 OOCOOOOCOOOOCOO OO0O0O0O0O0O0O0000000 OOOO0OO0O0OOO0O0000 QOQOOOOOOOOOOOO l CTTU Fan 1 Fan 2 BUE Te fa Caution A High speed rotating fan blades can cause injury Wait until the fan has stopped completely before removing it 24 easyRAID 16 Serial ATA Disk Array Systems 3 Remove the fan from the fan enclosure then insert a new fan in the fan enclosure Tr MORA X Caution A The fan will begin rotating immediately after it is plugged in Keep your fingers away from the blades 4 Close the fan enclosure then tighten the fan enclosure thumbscrew Te 25 uey e Duioejdes soueusjule c Aowa Buipeu6d eoueuojureJA c easyRAID 16 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 instructions2. easyRAID 16 U4R4 Ultra 320 SCSI to Serial ATA amp easyRAID 16 F2R4 Fibre Channel to Serial ATA Disk Array System Hardware User Manual Table of Contents FST AC c NER NR ws EUREN OHREPRNIDERRERNERE IRI TNR EN lil Chapter 1 Overview Eccc a 2 understanding RAID ogs E E 3 Justa Bunch OF DISKS seti trenes EET 3 RAID OV ClS M 3 Hol SbDare DISKS aani tutius decisa nad ovv dr on atus ab mate oatcateetease teeta UR LUN od EID 6 RAID COMDIMAONS xzcbuicoisansdtatuliunDUMaa E Io bepblnGufva dnx tasa tud css Dip ae God 6 Summary OF RAID Levels 1x ec etur craic qo reu Peu prede e pO TU DU ex 7 DY SIS Mi FRECUIFCIMIOIUS eau vatem tbe ea vomer ea SE vNE VAL eoi quest su a pde eda diat d enter can 8 Obefaund EHVIFORBIO FG prosta otto ttai edes bom UA SE rect atas ed Ae iodides 8 VTA00 Termibal SCUIN GS 25 verdsonm tcccdantse oda E capace lame a boten tcd ma dud 8 mie cid nz ACC RTT EE EUER 8 HIA DISKS eet 9 Chapter 2 Basic Configuration Mialerzie loo E OE mE 11 COmpoflel ils iesu beoe a M taa co ta Eee a cadet seca iude ud Lala is 12 mios M C TL erm 12 Bil dac m 13 Iear VIeW caecis decide asume Mat LaL Cea ean hve enh MD 14 HSan Bc cu ER 15 Making ConbecllollS utieseoi nascita ae utes nodu Ea eid to eere c out tamtn cdm 18 Connecting the Host Interface eeessesessesseesseeeeeennrnnnnen nnns 18
3. Appendix Hardware Specifications Item Specification Host Interface SCSI Ultra320 ERX16S U4R4 or 2 Gbit Fibre Channel ERX16S F2R4 Disk Interface 16 x Serial ATA SATA 150 MB s Dimensions 175 mm H x 483 mm W x 583 mm D Weight 21 Kg without disks RAID Functions Raid levels JBOD 0 1 0 1 3 5 30 or 50 Hot spare support Disk hot swapping with automatic online rebuilding Multiple RAID max 8 Disk Array Functions O S independent and transparent Maximum fault tolerant capacity 3 5 TB 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 Connectors 4 x Ultra320 SCSI ports ERX16S U4R4 or 2 x 2 Gbit Fibre Channel ports ERX16S F2R4 1 x RS 232 Serial port 115200 n 8 1 1 x RJ 45 Ethernet port 10 Mbps Power Supply 600W 2 1 redundant 90 264 VAC 47 63 Hz 1096 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 Harmonic meets EN6100 3 2 standard EMI RFI CE FCC class B and CISPR class B Safety UL cUL CB TUV Warranty 3 year warranty EMI CE class B FCC class B C Tick class B and BSMI class B oafety UL cUL and CB 31 suojeoylosds erempleH xipuedd yv easyRAID S16 Serial ATA Disk Array Systems Item Specification Contro
4. Placement Notes 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 e The disk array system has a 3 wire grounded plug The third pin connects to ground do not remove it e 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 vi 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 1s 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 powe
5. Connecting the RS 232 Cable esses nennen nennen nennen nns 19 Connecting and Turning on the Power cccccccceeeesececeeeeceeeeeeeeeneeaeeeeaees 20 Chapter 3 Maintenance Replacing a DISK m sr aa a ina 21 REDIACING a Power SUDDIY c teseitc tue a NE 22 PRODI ACTING a F A Emm 24 Upgrading Memory 3 22355 5 ec excede ia tasa Dee a A 26 Appendix Hardware obecltiGatlo is srann Qu Fat etos leg a Ves e kid OO UII MT ERU FD M EDU 31 Warnings and GeltlicdllOliS saasaa r bed nei it odeur edet 33 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 is correct Information and specifications are subject to change without notice Copyright Notice O Copyright 2003 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 of the company and its licensors if any Conventions A Caution 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 of This symbol
6. O O OCO O OLOAO LO pour Nd OCO O OZO O 02070702020 520702020070 otoo O0 6 oC o OZO OnO 020 0202020 0 0 059595969 0595959959 0 o o o o o o G 2 22 easyRAID 16 Serial ATA Disk Array Systems 3 Push the power supply release switch A and pull the power supply handle B out at the same time 5 Inserta new power supply unit in the empty power supply unit slot The power supply automatically locks into position when fully inserted 6 Reconnect the power cable The Power supply On indicator LED glows green 23 Ajddns 189 wog e Buioejdos soueusjulel c uey e Duioejdes eoueuojureJA c easyRAID 16 Serial ATA Disk Array Systems Replacing a Fan A fan failure is indicated by the LCD panel message Fan x failure where x refers to Fan 1 or Fan 2 An audible alert also sounds Note of Turn off the audible alert by pressing the Up 4 and Down function but tons on the front panel twice simultaneously Fans 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 fan 1 Identify the fan that has failed
7. are members of array group 2 Disk 15 has too many bad sectors 11111111122222WR e Disk 16 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 disk tray Pull the disk tray handle to the open position then pull the disk tray out Remove the screws from the failed disk then remove the failed disk from the disk tray Aa ON Insert the new disk into the disk tray The disk must be face up with the connec tors directed toward the open rear of the 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 Align the rear of the disk with the rear of the disk tray Attach the disk to the disk tray with the screws that came with the disk Insert the disk tray back into the empty slot then close the tray handle Lock the disk tray The disk array automatically begins rebuilding the RAID coo N Oi 21 Ajddns 189 wog e Buioejdos soueusjulel c easyRAID 16 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 tha
8. array system CE is equipped with a 3 wire grounded type of power cord This power cord will only fit into 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 NA Do not place the disk array system where the cord will be walked on E Never push any kind of object into the disk array system PA 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 Except as specifically explained in this User Manual do y not attempt to service the disk array system by yourself Opening or removing the covers may expose you to dangerous voltages S E Unplug this product from the wall outlet and refer servic ing to qualified service personnel under the following conditions e If the disk array system has been exposed to water or any liquid e If the disk array system has been dropped or the cabinet damaged II E za Buljpuey pue suey suononuisu Aj9Jeg 1ueuoduj 998J9Jd Buljpuey pue suey suononuisu Aj9Jeg 1ueuoduj 998J9Jd easyRAID 16 Serial ATA Disk Array Systems
9. is used to remind users of useful information that can make procedures such as configuration easier to accomplish Buljpuey pue suey suononuisu Aj9Jeg 1ueuoduj 998J9Jd easyRAID 16 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 heat register Refer to the rating plate for the correct voltage and ensure that the appliance voltage corresponds to the supply voltage IV easyRAID 16 Serial ATA Disk Array Systems The appliance must be grounded The disk
10. steps 1 to 9 until all of the required disks have been installed suonoeuuo uiye uoneunBijuo oiseg C easyRAID 16 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 ERX16S U4R4 has dual Ultra320 SCSI interfaces Follow these instructions to make con nections 1 Connect the active SCSI terminator A to the bottom connector of the ERX16S U4R4 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 ERX16S U4R4 host port 1 primary SCSI channel at the rear of the disk array system 18 easyRAID 16 Serial ATA Disk Array Systems Fibre Channel Interface The ERX16S F2R4 has dual 2 Gbit fibre channel interfaces Each interface can be used with opti cal or copper transceivers and cables Follow these instructions to make optical connections 1 Insert the LC Optical SFP transceiver A in to the ERX16S F2R4 host port 1 primary fibre channel at the rear of the disk array system 0000000000 0000000000 Connecting the RS 232 Cabl
11. to upgrade the memory 1 Remove the six screws from the ERX16S U4R4 top cover as illustrated aal 26 easyRAID 16 Serial ATA Disk Array Systems Carefully lift the daughterboard from the array group controller 27 Aowa Buipeu6d eoueuojureJA c easyRAID S16 Serial ATA Disk Array Systems 4 Pull the DIMM retaining clips away from the DIMM the DIMM springs out of the socket Remove the DIMM 3 Maintenance Upgrading Memory then push the corners of the DIMM down The DIMM is secured by the DIMM socket retaining clips 28 DIMM into place Note The DIMM module will fit in only one direction Do not force the J 5 Gently push the new DIMM into the socket at 45 degrees easyRAID 16 Serial ATA Disk Array Systems 6 Replace the daughterboard on the array group controller taking care to align the connec tors 29 Aowa Buipeu6d eoueuojureJA c easyRAID 16 Serial ATA Disk Array Systems 7 Place the top cover on the disk array system then slide the top forward into the closed position 00000000000000 00000000000000 00000000000000 00000000000000 pd 0000000 VRADUS 0000000 00000 8 Replace the six screws to fix the top cover on the disk array system chassis lt a Y 00000 00000000000000 00000000000000 00000000000000 00000000000000 0000000000000 J 000000000000 ff 00000000000 d o0 00000000 0000
12. Found only on the ERX16S U4R4 Turns the main power on or off Removable redundant power supply 1 Removable redundant power supply 2 Removable redundant power supply 3 Removable redundant fan 1 Allows the fan to be removed Removable redundant fan 2 Allows the power supplies to be removed Connects to a 110 240 VAC power source Indicates normal operation of the power supply when green or standby when red 14 easyRAID 16 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 disk tray O 4 ESC o 9 Y Enter OO oo BD 94 9 OL 9 O it og Q 9 L Ud ud ool 3 Pull the disk tray out sysig Buireisu uonean ijuo oiseg c sysig Buireisu uoneanfijuo oiseg C easyRAID 16 Serial ATA Disk Array Systems 4 Insert the disk into the disk tray The disk should face up with the connectors directed toward the open rear of the tray 5 Align the rear of the disk with the rear of the disk tray 6 Attach the disk to the disk tray with the screws that came with the disk 16 easyRAID 16 Serial ATA Disk Array Systems 8 Push the disk tray handle closed 9 Lock the disk tray 10 Repeat
13. ae aa OG O O O O O O O O OQ O c DO ov 0 0 0 0 0 OOO 5 6 6 4 o9o9o0959o9696o o9o9o09659o9696o Q CHO Oo OQ OO T ps OocD ne OUO U ct 670 0450 0 9 05 Qoo 0 0 oce O O 052020202020202 O596595959595959 5 O cO 0 070 70 0 0 O CO 0 40V070 0 0 OU oOov 0o ovo o0 5 O Ria uM aja cum ocu 6 66 O Oo O OOG Oo oO ooo O66 OUOTO G o0 0 0 cc o0o 0 00 0 0 0 Oc04 0 0 0 0 0 709 O OD O O O O 0O O O O O 0 0 0 G Oo 0 0 40 0 70 0 OG O o O 0 O0 0O O OYO O20 0 0 0 OG O 0 0 0 0 G Tm G O O G 0 0 oo 670990900900 9 6 3 S26 6410 60 66 O00 apace pel e 5 Oc O O O O G 0JO O 0 a a 0 Eo 0 6 5O 0 0 O cOo co O O O 5O OO cy G2O10 0 6 o 0 5 e OFF 5 0525 o9o9 0 L O17 o O O m 0 x amp No Name Description 1 RS 232 Port 2 Ethernet Port 3 ERX16S F2R4 Host Port 1 Primary fibre channel 4 ERX16S F2R4 Host Port 2 Secondary fibre channel 5 ERX16S U4R4 Host Port 2 Secondary SCSI channel 6 ERX16S U4R4 Host Port 1 Primary SCSI channel 7 Main Power Switch 8 Power Supply 1 9 Power Supply 2 10 Power Supply 3 11 Fan 1 12 Fan thumbscrews 13 Fan 2 14 Hot Swap Power Supply Release 15 AC Power In 16 Power Supply On Indicator Connects to a VT100 terminal or equivalent Used for browser based configuration Connects to the host server Found only on the ERX16S F2R4 Connects to the host server Found only on the ERX16S F2R4 Connects to the host server Found only on the ERX16S U4R4 Connects to the host server
14. arity 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 in a RAID 1 configuration 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 16 Serial ATA Disk Array Systems The following table summarizes the performance characteristics 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 JBOD 1 1 100 Data is distributed by
15. arning operating and configuration information 18 Down function button Moves down in the LCD menus 19 Up function button Moves up in the LCD menus 20 Escape function button Returns to the previous LCD menu without making changes 21 Enter function button Selects a menu item or confirms a choice or entry 22 Power on indicator green Indicates the disk array system power is on 23 Power supply fail indicator red Indicates a failed power supply Indicates data transfer between the disk array sys 24 Host computer access indicator tem and the host computer 12 easyRAID 16 Serial ATA Disk Array Systems Disk Tray 1 1 Left Right 9o HR 3 No Name Description Allows the disk be mounted on the disk tray with the eer MOM Ane Nees screws included with the disk 2 Trav lock Prevents unauthorized removal of a disk tray Open y with the included disk tray lock key 3 Tray handle Releases the disk tray 4 Power Error indicator LED Indicates normal operation of the disk when green or an error or failure of the disk when red 5 Access indicator LED Indicates that the disk is being accessed when orange sjueuodulo5 uoneunBiuo oiseg C easyRAID 16 Serial ATA Disk Array Systems Rear View 1 2 3 4 5 6 7 8 9 10 N O O O O O m zi i le Ie e o 1 u mal 2 6 euo O O O O 9 X S O_O O_O i Q 5 Fo ko ey 2 ooo 0 5 0O 0G 0 h aoa Co epa m
16. ds 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 115 200 Data Bits 8 Stop Bit 1 Parity None 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 easyRAID 16 Serial ATA Disk Array Systems Small Computer Systems Interface The ERX16S U4R4 has dual Ultra320 SCSI interfaces that are compatible with previous SCSI standards Refer to the following table to understand SCSI bus requirements Note of Subtract the internal cable length 60 cm from the maximum SCSI bus length to calculate the maximum external SCSI cable length 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 T Fast Wide 3 20 15 Ultra 1 5 20 T Fibre Channel Interface The ERXI6S F2R4 has dual 2 Gbit fibre channel i
17. e Connect the supplied RS 232 cable to the RS 232 port at the rear of the unit 19 suonoeuuo BHulyey uoneun iuo olseg c suonoeuuo uiye uoneunBijuo oiseg C easyRAID 16 Serial ATA Disk Array Systems Connecting and Turning on the Power 1 Connect a power cable A to the power supply 1 connector at the rear of the unit The power supply on indicator LED glows red 2 Connect the second and third power cables to the power supply 2 and 3 connectors at the rear of the unit Each power supply on indicator LED glows red when the second and third power supplies are connected Note of The system is equipped with auto switching power supplies that can run on 100 to 240 VAC 3 Press the disk array system main power switch B to the ON position All power supply on indicator LEDs glow green and disk array system automatically begins the self test sequence 20 3 Maintenance Replacing a Disk A disk failure 1s indicated when the Power Error LED at the front of the drive tray turns red and the audible alert sounds Note of Turn off the audible alert by pressing the Up 4 and Down function but tons on the front panel twice simultaneously The LCD screen shows 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 Disks 1 to 9 are members of array group 1 Disks 10 to 14
18. 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 Between679 e X 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 Between679 e X 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 4 5 5 50 RAID 0 1 is a RAID 1 consisting of RAID 0 members RAID 30 4 4 Between679e RAID 30 is a RAID O0 consisting for 6 disks to of RAID 3 members 88 for 16 disks RAID 50 4 4 5 Between67 RAID 50 is a RAID O0 consisting for 6 disks to 88 for 16 disks of RAID 5 members GIVuy Buipuejsjepu MelAJ9AQ L sjueuiaJinbeos ulejs S MaIAJ9AQ L easyRAID 16 Serial ATA Disk Array Systems System Requirements Ensure that the following requirements are met before installing the disk array 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 fiel
19. ller CPU Intel i80321 64 bit RISC microprocessor Disk Interface serial ATA 1 Disk Channels 16 channels up to 32 channels by using a daughter board 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 ESC Enter and Reset Battery Backup Interface Yes Daughter Board Interface PCI X 64 bit 66 133MHz Backplane Interface Compact PCl connector Backplane Disk Channel Support 16 channels Disk Channel Support 16 disks Disk Connector Type Serial ATA Sequence Disk Power On Temperature Sensors Power Connector Type Fan Connector Type Select by jumper H W power on all disks S W 4 disks at 2 ms intervals 13 ATX x2 1 x 3 pin with housing 2 54 mm pitch 1 red 1 white 32 easyRAID 16 Serial ATA Disk Array Systems Item Specification Cooling Fans Temperature Fan 1 rpm Fan 2 rpm Under 25 C 1000 1000 26 C 40 C 1500 1500 41 C 50 C 2100 2100 Over 51 C 3100 3100 Fan 1 Failure Failed 3100 Fan 2 Failure 3100 Failed Any Power Module Failure 1000 1000 Warnings and Certifications Federal Communications Commission FCC This FCC certification applies in the U S and Canada This equipment has been tested and found to comply with the limits for a Class B digital device pursuant to Part 15 of the FCC Rules These limits are designed to provide reasonable pro
20. nterfaces with SFP connectors for linkage to a fibre channel switch or host computer interface card With the correct SFP transceiver and opti cal 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 serial ATA disks needed for your application Refer to Understanding RAID on page 3 to determine the number of disks needed syu wanb y ulejs S MaIAJ9AQ L 2 Basic Configuration This chapter describes disk array system connections and disk installation Unpacking Contact your supplier if any of the following items are missing or damaged Caution The disk array system is heavy Be careful when lifting and moving it EE NSA Active Terminator ERX16S U4R4 Disk Tray Keys Power Cables User Manual 11 easyRAID 16 Serial ATA Disk Array Systems Components N Front View S 18 19 2021 2 e O 2 E e c2 Co buc 22 ESC O 23 Coco 24 o Y Enter Access O E D 3 o 2 O cC S2 O 12 3 o TF e F 13 g pO g n9 E 4 by by 3 14 5 by 113 119 i 15 z g PO E 6 by hr V 16 7 8 9 10 No Name Description 1 16 Disk trays 1 to 16 Removable hot swap disk trays 17 LCD panel Displays w
21. 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 Processing of graphical or video images Processing of CAD CAM files RAID 3 has the following characteristics Excellent performance for data transfer intensive applications Not well suited for transaction processing or other I O request intensive applications aiv DuipuejsJepur MOIAJOAQ L adlyy Buipuejsjepuf M NA L easyRAID 16 Serial ATA Disk Array Systems RAID5 D d Disk AT ay Controllo Array Management Software Provides Logical to Physical Mapping S Se ee a 2 Ee gt a gt a V 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 disk 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 p
22. ons that make synchronous random requests for small amounts of data RAID 1 Po ras Cortos Array ees eve Software Provides Logical to Physical Mapping Physical Dee T Ce 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 High access rate is required Cost of storage is a secondary issue easyRAID 16 Serial ATA Disk Array Systems RAID 3 7727 ll kr ool Array Management Software Provides Logical to Physical Mapping Disk 1 Disk2 Disk 3 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 Striping 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
23. r supplies and fans independent serial ATA 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 1s achieved by combining the individual data rates of serial ATA disks in a RAID configuration Serial ATA 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 1s 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 or RS 232 interfaces semjeoj M MJ AO easyRAID 16 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 Operating system independent e Up to eight JBOD RAID 0 1 3 5 0 1 30 or 50 array groups On line expansion Allows division of array groups into slices each mapped to a LUN Hot spare disk and automatic on line rebuild e Up to 16 hot swap serial ATA disks for a total capacity of 3 5 TB terabytes Three hot swap power supplies if one fails the others take over without interruption Two hot swap fans with intelligent speed and
24. t turns red when one of the power supplies fails The message Power x failure also appears on the LCD panel where x refers to power supply 1 2 or 3 and an audible alert sounds Note of Turn off the audible alert by pressing the Up 4 and Down 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 1s powered on and operating Follow these instructions to replace a failed power sup ply 1 Identify the power supply that has failed B a LC Oye 7 s amp e amp OA ale 9 C J It gt ra feet 26 e e 1 o O_O O_O 0000090 0907020 09 OWel u O 0 070 50 OCO LOAnOAO 0 6202020070 0 0 0 0700 OZO CO O O0 O O0 O70 AOZ0A02050 O750 0 5070 0 OYOPOYOr ovo OZOZOFOFOR070 OCOLOAOLnOAnOAO OF O26 2070 02026 Oso o O 0 0 0 0 0 O26 2020 0 6 06 OCOZO O OAO0 20 OAOZOZO OAO OZLO 0 0505020 0 6 0 O O OBOROAOAO OAO OARO OAOAO O2 0 020 020 0720 OLOVvoVoPoxroVoro 0 020 070 7670 OF OZOFOSZOZORO 00 OL OY OF OLOZOFOFO OLOYOTOYOF OF OFO 0 O2O2O 070 0 0 OFOZOFOSOSORO My OP OY OF OYOZOFOFO OL OVYOFOYOZ OF ORO O CO OAOAOAnOAO OLOrZOAOAO nOAO OZ OY OROLOZOFOFO OL OV OF OYOZR OF OO 02070 00050 0202070207020 ji OZOT O O O O O O OL OV OZ02 0 0 7020 Q O O CO ORO
25. tection against harmful interference when the equipment is operated in a residential installation This equipment generates uses and can radi ate radio frequency energy and if not installed and used in accordance with this user s guide may cause harmful interference to radio communications However there is no guarantee that interference will not occur in a particular installation If this equipment does cause harmful inter ference to radio or television reception which can be determined by turning the equipment off and on the user is encouraged to try to correct the interference by one or more of the following measures Reorient or relocate the receiving antenna ncrease the separation between the equipment and receiver Connect the equipment into an outlet on a circuit different from that to which the receiver is connected Consult the dealer or an experienced radio TV technician for help 33 suoneoynieo pue sBuruew xipueddy
26. temperature management e Sixteen 150 MB s serial ATA channels Fast 64 bit RISC CPU based RAID controller with up to 1 GB of cache in an SO DIMM Dual Ultra SCSI ERX16S U4R4 or fibre channel ERX16S F2R4 host interfaces Audible alarm disk tray LED and LCD panel failure indicators Configuration via the front panel and RS 232 interfaces easyRAID 16 Serial ATA Disk Array Systems Understanding RAID Read this section to understand how to balance data availability access rate and capacity man agement needs Justa Bunch Of Disks Just a Bunch Of Disks JBOD consists of two or more disks that can be different sizes Disk 1 1s completely filled then disk 2 disk 3 and so on until the final disk 1s full The total capacity of JBOD is the sum of the capacities of each disk Disks are added until the desired total capacity 1s reached JBOD is used in the following situations Building useful capacity from disks that are too small to be individually useful 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 RAIDO 4 di Disk Af ay Controlley Array Management Software Provides Logical to Physical Mapping Disk 1 Disk2 Disk 3 In RAID 0 data is divided in
27. to 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 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 Disk16 Physical 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 aiv DuipuejsJepur MOIAJOAQ L adlyy BuipuejsJjepu MelAJ9AQ L easyRAID 16 Serial ATA Disk Array Systems 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 Capturing data from external sources at very high data transfer rates A RAID 0 array is not useful in the following situations Applications that make sequential requests for small amounts of data These applications spend most of their I O time waiting for disks to spin whether or not they use striped arrays Applicati
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