include only one or two type 4939 expansion enclosures or a combination of
type 4939 and type 2076 expansion enclosures. Type 2076 enclosures are
always attached at the end of the chain.
Figure 13 shows the cabling for the maximum of 9 expansion enclosures.
Table 4. A type 4939 and 7 type 2076 expansion enclosures
1 Front of the Flex System chassis
2 Front of 4939 control enclosure
3 and 4 Front of the 4939 expansion enclosures 1 and 2 (each has a left canister and a right canister)
5 Rear of 2076 expansion enclosure 3 (upper canister)
6 Rear of 2076 expansion enclosure 3 (lower canister)
7 Rear of 2076 expansion enclosure 4 (upper canister)
8 Rear of 2076 expansion enclosure 4 (lower canister)
2. Using the proper SAS cable, connect a SAS cable to port 1 of each canister in
the control enclosure. Remove the protective end covers from the SAS
connectors, as necessary.
3. Determine which type of expansion enclosure you are attaching.
a. To attach the control enclosure to a 4939 expansion enclosure, continue at
Step 4 on page 20.
1
2
1
2
3
4
1
2
1
2
1
2
1
2
3
7
5
6
4
1
1
2
1
2
9
1
2
2
1
1
2
2
8
ite00051
Figure 13. SAS cabling for 2 type 4939 expansion enclosures and up to 7 type 2076 expansion enclosures
Chapter 2. Performing the 4939 hardware installation 19
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