IBM Storwize V7000 Gen2+ - Connecting the SAS Cables

For information about the SAS cabling requirements for 5U expansion enclosures,
see “Connecting optional SAS expansion enclosures: 2076-92F” on page 122.
Be aware of the following guidelines when you connect a Storwize V7000 control
enclosure to the SAS ports in 2U and 5U expansion enclosures.
v Storwize V7000 systems support 4-port SAS interface adapters. However, only
ports 1 and 3 are used for SAS connections, as Figure 25 on page 28 shows.
v In general, the SAS interface adapter should be installed in PCIe slot 3 of the
node canister.
v No more than ten expansion enclosures can be chained to SAS port 1 of a node
canister. The expansion enclosures in this chain should be installed below the
control enclosure (as shown in Figure 25 on page 28).
v No more than ten expansion enclosures can be chained to SAS port 3 of a node
canister. The expansion enclosures in this chain should be installed above the
control enclosure (as shown in Figure 25 on page 28).
v No cable can be connected between a port on a left canister and a port on a
right canister.
v A cable must not be connected between ports in the same enclosure.
fab10007
4
5
6
7
8
9
1
2
3
*
Figure 24. Connecting the SAS cables
Chapter 2. Installing the system hardware 27