Bosch Appliances DVA-16K Subsystem Connection and Operation, Scsi Connection Overview

RAID Subsystem DVA-16K Installation ManualSubsystem Connection and Operation en 33

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

Bosch Security System F.01U.027.799 V2 2008.08