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easyRAIS S8A2-U4TT
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 easyRAIS S8A2-U4TT has dual Ultra320 SCSI interfaces that are compatible with previous
SCSI standards. Refer to the following table to understand SCSI bus requirements.
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
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Page 32: ...22 easyRAID S8A2 U4TT Serial ATA Disk Array Systems 3 Maintenance Replacing a Fan ...