IBM 2073-700, Quick Installation Manual

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v
No more than four expansion enclosures can be chained to port 2 (above the
control enclosure). The connecting sequence from port 2 of the node canister is
called chain 2.
v
No cable can be connected between a port on an upper canister and a port on a
lower canister.
v
Attach cables serially between enclosures; do not skip an enclosure.
v
The last enclosure in a chain must not have cables in port 2 of canister 1 and
port 2 of canister 2.
v Ensure that cables are installed in a tidy manner to reduce the risk of cable
damage when Storwize V7000 Unified replaceable units are removed or inserted.
v
Arrange your cables to provide access to:
– The USB ports. Access is required to this port when you use the USB key to
configure the system.
– The enclosures themselves. Access is required to the hardware for servicing
and for safely removing and replacing components using two or more people.
v
Ensure that each SAS cable is fully inserted. A click is heard when the cable is
successfully inserted.
Note: If you make a mistake during cabling and must unplug a SAS cable, pull
the blue tag to release the cable.
1. Review Table 1 and the following figures before attaching the SAS cables.
Table 1. How to connect SAS cables to expansion units.
SAS Connections: How the first unit connects to the second unit
First Unit Second Unit Number of Expansions
Controller Expansion 1 1 Expansions
Upper canister port 1 Upper canister port 1
Lower canister port 1 Lower canister port 1
Controller Expansion 2 2 Expansions
Upper canister port 2 Upper canister port 1
Lower canister port 2 Lower canister port 1
Expansion 1 Expansion 3 3 Expansions
Upper canister port 2 Upper canister port 1
Lower canister port 2 Lower canister port 1
Expansion 2 Expansion 4 4 Expansions
Upper canister port 2 Upper canister port 1
Lower canister port 2 Lower canister port 1
Expansion 3 Expansion 5 5 Expansions
Upper canister port 2 Upper canister port 1
Lower canister port 2 Lower canister port 1
Expansion 4 Expansion 6 6 Expansions
Upper canister port 2 Upper canister port 1
Lower canister port 2 Lower canister port 1
Expansion 5 Expansion 7 7 Expansions
Upper canister port 2 Upper canister port 1
Lower canister port 2 Lower canister port 1
Chapter 2. Performing the hardware installation
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