APC RAID Subsystem SCSI-SATA II Specifications Page 52

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Chapter 4 Subsystem Connection and Operation
Chapter 4
Subsystem Connection and
Operation
4.1 SCSI Host Connection Prerequisites
This chapter introduces sample topologies, configuration options and server connections
for the Falcon subsystems and discusses both the power on and power off procedures.
The Falcon 24 BAY subsystem supports two (2) SCSI host channels and two (2) dual-
stacked connectors (4 x VHDCIs) featuring support for SCSI-320 protocol, the latest
iteration of the SCSI drive interface standard. SCSI-320 enables maximum data transfer
rates up to 320MB/second per channel from host computers to the subsystems or
expansion enclosures. This is twice the bandwidth as the Ultra160 standard, allowing you
optimal performance and flexibility with configuring storage applications.
4.1.1 SCSI Cables
One (1) SCSI cable (IFT-9270UJBODCab) is provided with the 24 BAY subsystem
for host connection. If you wish to connect the second host channel or
expansion enclosure(s), additional SCSI external round cables must be purchased
separately. When purchasing SCSI-320 cables, ensure that they are of the highest quality
and produced by a reputable manufacturer. To ensure optimum system performance, it
is necessary to use proper, high quality, SCSI-320 cables.
CAUTION!
All cables must be handled with care. To prevent interference within a rack system,
the cable routing path must be carefully planned and the cables must not be bent.
SCSI Host Connection Prerequisites 4-1
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