Scsi Connectors; Scsi Termination; Scsi Firmware; Scsi Bus - LSI MegaRAID SCSI 320-2 RAID Controller Series 518 Hardware Manual

4.10.6 SCSI Bus

4.10.7 SCSI Connectors

4.10.8 SCSI Termination

4.10.9 SCSI Firmware

4-10
The MegaRAID SCSI 320-2 controller has two Ultra320 Wide SCSI
channels that support low voltage differential SCSI devices with active
termination. Both synchronous and asynchronous devices are supported.
The MegaRAID controller provides automatic termination disable via
cable detection. Each channel supports up to 15 wide or seven non-wide
SCSI devices at speeds up to 320 Mbytes/s per SCSI channel. The
MegaRAID controller supports up to six non-disk devices per controller.
The SCSI bus mode defaults to LVD for each SCSI channel. If a single-
ended device is attached to a SCSI channel, the MegaRAID controller
automatically switches to SE mode for that SCSI channel.
The MegaRAID SCSI 320-2 has two types of SCSI connectors:
Two 68-pin high density internal connectors
Two 68-pin very-high-density external connectors
The MegaRAID SCSI 320-2 uses active termination on the SCSI bus,
conforming to Alternative 2 of the SCSI-2 specifications. Termination
enable/disable is automatic through cable detection.
The MegaRAID SCSI 320-2 firmware handles all RAID and SCSI
command processing and also supports the features listed in
Table 4.7 SCSI Firmware
Feature
Disconnect/
reconnect
Tagged command
queuing
Scatter/gather
Features
Copyright © 2002 by LSI Logic Corporation. All rights reserved.
Description
Optimizes SCSI bus seek
Multiple tags to improve random access
Multiple address/count pairs
Table 4.7.