RAID Subsystem DVA-16K | Installation Manual
Subsystem Connection and Operation | en
33
Bosch Security System
F.01U.027.799 | V2 | 2008.08
5
Subsystem Connection and Operation
This chapter introduces sample topologies, daisy-chaining, and external device connections
for the RAID subsystem and discusses both the power on and power off procedures.
5.1
SCSI Connection Overview
The RAID subsystem supports two (2) SCSI channels and two (2) dual-stacked SCSI connec-
tors using SCSI-320 (also known as Ultra-320 SCSI), the latest iteration of the SCSI bus stan-
dard. SCSI-320 enables maximum data transfer rates of up to 320MB/second per channel
between the host computers and the RAID subsystem. This is twice as fast as the Ultra-160
standard, allowing users to store data at the fastest SCSI speeds available.
5.1.1
SCSI Cables
One (1) SCSI cable is used for each RAID subsystem for host connection. A second SCSI cable
is used to connect the second host channel. Use only high quality SCSI-320 cables from a rep-
utable manufacturer. To ensure optimum performance, it is necessary to use proper, high
quality, durable SCSI-320 cables. Failure to do so will result in downgraded performance.
5.1.2
SCSI Port on the Controller Rear Panel
The RAID subsystem is equipped with two (2) dual-stacked VHDCI SCSI connectors on the
back of the enclosure for connecting the subsystem to a host computer and/or to daisy-chain
other RAID subsystems. (See
Figure 5.1
) The connectors on the bottom of the controller rear
panel are for data input and the connectors on the top are for data output.
Fig. 5.1
SCSI Connectors on the Controller Rear Panel
Summary of Contents for DVA-16K SCSI
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