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42 shows the upper and lower CMA assemblies as they are aligned to the support rails. The support rail
connector of the upper CMA attaches to the right rail. The support rail connector of the lower CMA
attaches to the left rail.
Figure 49. Comparing the location of the components of the CMA assemblies
7
Inner connector on lower CMA
8
Connector base on inner rail member
9
Outer connector on lower CMA
10
Connector base on outer rail member
11
Support rail connector the lower CMA
12
Connector base on outer rail member
5. Install the inner connector of the lower CMA assembly (
rail (
8
), as shown in Figure 49 on page 42).
6. Install the outer connector of the lower CMA assembly (
rail
10
, as shown in Figure 49 on page 42.
7. Attach the support rail connector on the lower CMA assembly (
support rail (
12
Ensure that the lower CMA assembly is securely attached to the hooks on the end of the support rails.
8. Route the cables and power cords on the CMA. If needed, secure them with cable ties or hook-and-
loop fasteners.
Notes:
• Use the cable straps that are provided on the rear of the system to retain the cables and prevent
them from sagging.
• Allow slack in all of the cables to avoid tension in the cables as the CMA moves.
9. Reconnect the power cords and other cables, as needed.
Removing and installing a SAS cable
Use the following procedures to attach SAS cables to the 5U enclosure during the initial installation
process. You can also remove a faulty SAS cable and replace it with a new one received from FRU stock.
About this task
Be careful when you are replacing the hardware components that are located in the back of the system.
Do not inadvertently disturb or remove any cables that you are not instructed to remove.
If you replace more than one cable, record which two ports, canisters, and enclosures each cable
connects, so you can match the connections with the replacement cables. The system cannot operate if
the SAS cabling to the expansion enclosure is incorrect.
When the 5U expansion enclosure is installed in the rack, the expansion canisters are upside down. The
input cable connects to the right port (port 1) on the expansion canister. The output cable connects to the
left port (port 2) on the canister.
42 Storwize V5100 : Quick Installation Guide for MTM 2078-424, 2078-12F, 2078-24F, 2078-92F, and 2078-
U5B
), as shown in Figure 49 on page 42.
7
) to the inner member of the right support
9
) to the outer member of the right support
11
) to the connector on the left
11
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