IBM TotalStorage DS4800, Инструкция по установке, эксплуатации и обслуживанию

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Table 16. Different ways to connect four storage expansion enclosures to the
DS4800 (continued)
Drive Channel 1
port 4
Drive Channel 1
port 3
Drive Channel 2
port 2
Drive Channel 2
port 1
Case 6 1 3 0 0
Case 7 1 1 1 1
DS4800 Storage Subsystem drive cabling topologies
The following sections provide preferred cabling topologies for cabling storage
expansion enclosures to the DS4800 Storage Subsystem. Each example provides
redundant paths to the drives. If one of these examples is suitable for your
hardware and application, complete the cabling connections as described in the
tables. If you have hardware to include in your topology other than what is shown in
these examples, use the examples as a starting point for creating your specific
topology.
Attention: The DS4800 supports the connection of a maximum of eight storage
expansion enclosures per redundant drive channel pair. The DS4800 supports two
redundant drive channel pairs.
If you are using fiber-optic cables, install SFP modules into the ports that will
receive the cables before installing the cables.
Figure 47 on page 70 shows the locations of controllers A and B, and the
single-ported host channels, Ethernet ports, and dual-ported drive channels at the
back of the DS4800 Storage Subsystem.
Chapter 3. Cabling the storage subsystem
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