Chapter 12. RAS, monitoring, and troubleshooting 663
12.2 System components
This section describes each of the components that make up the IBM Storwize V5000 Gen2
system. The components are described in terms of location, function, and serviceability.
12.2.1 Enclosure midplane
The enclosure midplane connects the node or expansion canisters to the power supply units
and to the drives. The midplane is part of the enclosure midplane assembly, which consists of
the midplane and the front section of the enclosure.
During the basic system configuration, vital product data (VPD) is written to the enclosure
midplane. On a control enclosure midplane, the VPD contains information, such as worldwide
node name (WWNN) 1, WWNN 2, machine type and model, machine part number, and serial
number. On an expansion enclosure midplane, the VPD contains information, such as
machine type and model, machine part number, and serial number.
The enclosure midplane is initially generic and it is configured as a control enclosure
midplane or expansion enclosure midplane only when the VPD is written. After the VPD is
written, a control enclosure midplane is no longer interchangeable with an expansion
enclosure midplane and vice versa.
For information about the midplane replacement process, see the IBM Storwize V5000 Gen2
Knowledge Center at:
https://ibm.biz/Bdjmbn
For a complete overview of maintenance tasks see:
http://www.ibm.com/support/knowledgecenter/STHGUJ/welcome?lang=en
12.2.2 Node canisters
Two node canister slots are on the top of the unit. The left slot is canister 1, and the right slot
is canister 2.
Figure 12-1 shows the rear view of a fully equipped control enclosure.
Figure 12-1 Rear view of a control enclosure with two node canisters (the Storwize V5020)
Important: The enclosure midplane must be replaced only by a trained IBM service
support representative (SSR).
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