User manual

2
SA-3340S Serial ATA Disk Array Systems
1 Overview – System Requirements
Host Interface
The disk array system has dual SCSI interfaces interfaces. Refer to the following sections to
understand host interface system requirements.
Small Computer Systems Interface
The SA-3340S has dual Ultra320 SCSI interfaces that are compatible with previous SCSI stan-
dards. 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