IBM Storwize V5000 Gen 2 Series, Quick Installation Manual

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Procedure
1. Install the cables, as shown in Figure 113 on page 107.
Note: Figure 113 on page 107 shows the cable connections between the SAS enclosures and the
Storwize V5030 control enclosure. It does not imply or represent the precise racking order for the
enclosures in a rack. However, due to its size and weight, always place the 2077-92F enclosure near
the bottom of the rack.
Figure 113. Connecting the SAS cables
2. If more I/O groups are configured, repeat the cabling procedure for the other I/O groups. The
maximum number of I/O groups that is supported depends on the model of your system. Two chains
of expansion enclosures can be attached to each I/O group. On each SAS chain, the systems can
support up to a SAS chain weight of 10.
Combining 2U and 5U expansion enclosures
About this task
As Figure 113 on page 107 shows, you can combine 2U and 5U expansion enclosures in a SAS chain. The
limiting factor is the combined chain weight of the various components. The maximum SAS chain weight
that can be attached to a node SAS port is 10:
• 2077-92F expansion enclosures (5U) have a chain weight of 2.5
• 2077/2078-12F or 2077/2078-24F expansion enclosures (2U) each have a chain weight of 1.
Chapter 2. Installing the system hardware 107