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easyRAID S8 

Serial ATA Disk Array Systems

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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 easyRAID S8-U4TT has dual Ultra320 SCSI interfaces that are compatible with previous 
SCSI standards. Refer to the following table to understand SCSI bus requirements.

Fibre Channel Interface

The easyRAID S8-F2TT 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.

Hard Disks

Supply the number of serial ATA disks needed for your application. Refer to “Understanding 
RAID” on page 2 to determine the number of disks
 needed.

Note

Subtract the internal cable length (60 cm) from the maximum SCSI bus 
length to calculate the maximum external SCSI cable length.

SCSI 

Standard

Maximum

SCSI Bus Length

in Meters

Data Rate

in Megabytes

per Second

Maximum

Number of Devices

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

Component

Optical

SFP Transceiver

LC Optical

Cable

Short Wave

Long Wave

Maximum Cable Length

50m

10 Km

Содержание S8-U4TT

Страница 1: ...ESC Enter easyRAID S8 U4TT Ultra 320 SCSI to Serial ATA Disk Array System easyRAID S8 F2TT Fibre Channel to Serial ATA Disk Array System Hardware User Manual...

Страница 2: ......

Страница 3: ...ion 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...

Страница 4: ...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...

Страница 5: ...ect 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 bef...

Страница 6: ...o 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 fie...

Страница 7: ...Settings 7 Host Interface 8 Hard Disks 8 Chapter 2 Basic Configuration Unpacking 9 Components 10 Front View 10 Control Panel 11 Disk Tray 12 Rear View 13 Installing Disks 14 Making Connections 16 Conn...

Страница 8: ......

Страница 9: ...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...

Страница 10: ...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...

Страница 11: ...es 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 sp...

Страница 12: ...d 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 o...

Страница 13: ...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 be...

Страница 14: ...Between67 for 3 disks to 94 for 16 disks Data is divided into pieces the parity of these pieces is calcu lated and the pieces are written to separate disks in parallel with the writing of the parity...

Страница 15: ...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...

Страница 16: ...nkage 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 Hard Disks Supply the number of...

Страница 17: ...he disk array system is heavy Be careful when lifting and moving it easyRAID S8 F2TT Fibre Channel to Serial ATA Disk Array Sys tem Hard ware User Manual easyRAID S8 U4TT Ultra320 SCSI to Serial ATA D...

Страница 18: ...Array Systems 2 Basic Configuration Components Components Front View No Name Description 1 8 Disk trays 1 to 8 Removable hot swap disk trays 9 Control panel Displays warning operating and configuratio...

Страница 19: ...pe button Returns to the previous LCD menu without making changes 4 Power on indicator Indicates the disk array system power is on 5 Power supply fail indicator Indicates a failed power supply 6 Host...

Страница 20: ...rews included with the disk 2 Tray lock Prevents unauthorized removal of a disk tray Opened with the included disk tray lock key 3 Tray handle Releases the disk tray 4 Power Error indicator LED Indica...

Страница 21: ...the power supply to be released 6 Power Supply AC In Connects to a 110 240 VAC power source 7 Power Supply Handle Allows the power supply to be removed 8 easyRAID S8 F2TT Host Port 1 Primary fibre ch...

Страница 22: ...rstanding RAID on page 3 to decide how many disks are required 1 Unlock the disk tray A then pull the disk tray handle to the opened position B and remove the disk tray C 2 Insert the disk into the di...

Страница 23: ...ttach the disk to the disk tray with the screws supplied by the disk supplier 5 Slide the disk tray back into the empty slot A push the disk tray handle closed B then lock the disk tray C 6 Repeat the...

Страница 24: ...SCSI interfaces or dual fibre channel interfaces Refer to the following sections to make host interface connections Small Computer Systems Interface The easyRAID S8 U4TT has dual Ultra320 SCSI interf...

Страница 25: ...cal or copper transceivers and cables Follow these instructions to make optical connections 1 Insert the LC Optical SFP transceiver A in to the easyRAID S8 F2TT host port 1 pri mary fibre channel at t...

Страница 26: ...o a power supply connector at the rear of the unit 2 Connect the second power cable to the remaining power supply connector 3 Press the disk array system power switch to the ON position The disk array...

Страница 27: ...the disk tray 4 Align the rear of the new disk with the rear of the disk tray 5 Insert the new disk into the disk tray 6 Attach the disk to the disk tray with the screws that came with the disk 7 Slid...

Страница 28: ...also appears on the LCD panel where x refers to power supply 1 or 2 and an audible alert sounds Power supplies are hot swappable which means that they can be inserted and removed while the disk array...

Страница 29: ...ce Replacing a Power Supply 2 Unplug the power cable connected to the failed power supply unit 3 Push the power supply release switch A in the direction illustrated and pull the power supply handle ou...

Страница 30: ...matically locks into position when fully inserted 6 Reconnect the power cable Upgrading Memory The disk array system takes a single 200 pin PC200 DDR SDRAM SO DIMM with a maximum capacity of 1 GB Foll...

Страница 31: ...isk group controller B 3 Pull the DIMM retaining clips away from the DIMM then remove the DIMM The DIMM springs out of the socket 4 Gently push the new DIMM into the socket at 45 degrees then push the...

Страница 32: ...ading Memory 5 Replace the screws then replace the daughterboard on the disk group controller taking care to align the connectors 6 Place the top cover on the disk array system slide it shut then repl...

Страница 33: ...panel message Fan x failure where x refers to Fan 1 or Fan 2 An audible alert also sounds Follow these instructions to replace a failed fan 1 Identify the fan that has failed Note Turn off the audible...

Страница 34: ...screws then pull the fan enclosure out of the chassis 3 Unplug the power connector remove the screws then remove the failed fan Caution High speed rotating fan blades can cause injury Wait until both...

Страница 35: ...ws removed in the previous step then insert the power connector 5 Insert the fan enclosure into the chassis then tighten the fan enclosure thumbscrews Caution The fan will begin rotating immediately a...

Страница 36: ......

Страница 37: ...k scrubbing Disk Array Functions O S independent and transparent Maximum fault tolerant capacity 2 TB 256 MB 1 GB DDR SDRAM LCD panel operation indicator Audible alarm disable alarm Optional battery b...

Страница 38: ...ESC Enter Battery Backup Interface Yes Daughter Board Interface 1 x 64bit 66MHz and 1 x 32bit 33MHz Backplane Interface Compact PCI Disk Channel Support 8 channels Disk Number Supported 8 disks Disk C...

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