Table 14. How to connect SAS cables to expansion units. (continued)
SAS Connections: How the first unit connects to the second unit
First Unit Second Unit Number of Expansions
Lower canister port 2 Lower canister port 1
Expansion 6 Expansion 8 8 Expansions
Upper canister port 2 Upper canister port 1
Lower canister port 2 Lower canister port 1
Expansion 7 Expansion 9 9 Expansions
Upper canister port 2 Upper canister port 1
Lower canister port 2 Lower canister port 1
2. Attach the SAS cables from the control enclosure to the first expansion
enclosure as shown in Figure 34. Remove the protective end covers, if
necessary. The first expansion enclosure is below the control enclosure.
a. Port 1 1 of the upper canister, control enclosure, attaches to Port 1 2 of
the upper canister, expansion enclosure 1.
b. Port 1 3 of the lower canister, control enclosure, attaches to Port 1 4 of
the lower canister, expansion enclosure 1. The port locations on the lower
canister are inverted from the port locations on the upper canister. Port 1 on
the lower canister is opposite port 1 on the upper canister.
Note: The connecting sequence from port 1 of the node canister is called
chain 1.
3. Attach the SAS cables from the control enclosure to the second expansion
enclosure as shown in Figure 35 on page 46. The second expansion enclosure is
above the control enclosure.
Control enclosure
Expansion enclosure 1
2
4
svc00661
1
3
Figure 34. Attaching an expansion enclosure to the control enclosure
Chapter 2. Performing the hardware installation 45
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