Perform the following steps to create the recommended cabling scheme shown in
Figure 74:
1. Connect port 1A on the left ESM in the first EXP810 (
2
) to port 1B (
1
) on
the left ESM in the third EXP810 (
4
).
2. Connect port 1A on the right ESM in the third EXP810 (
4
) to port 1B (
1
) on
the right ESM in the first EXP810 (
2
).
3. Connect port 1B (
1
) on the left ESM in the first EXP810 (
2
) to port 2 of
drive channel 1 on the DS4700 Express.
4. Connect port 1 of drive channel 2 on the DS4700 Express to port 1B (
1
) on
the right ESM in the third EXP810 (
4
).
5. Connect port 1A on the left ESM in the second EXP810 (
3
) to port 1B (
1
)
on the left ESM in the fourth EXP810 (
5
).
6. Connect port 1A on the right ESM in the fourth EXP810 (
5
) to port 1B (
1
)
on the right ESM in the second EXP810 (
3
).
7. Connect port 1B (
1
) on the left ESM in the second EXP810 (
3
) to port 1 of
drive channel 1 on the DS4700 Express.
8. Connect port 2 of drive channel 2 on the DS4700 Express to port 1B (
1
) on
the right ESM in the fourth EXP810 (
5
).
Figure 75 on page 93 shows the recommended cabling scheme for one DS4700
Express Storage Subsystem and a maximum of six EXP810 storage expansion
enclosures behind both ports of a dual-ported drive channel.
ds470056
1
1
1
1
2
3
1
4
5
1
1
1
Figure 74. One DS4700 Express and four EXP810 storage expansion enclosures behind a
pair of DS4700 drive ports
92
IBM System Storage DS4700 Express Storage Subsystem: Installation, User’s and Maintenance Guide
Summary of Contents for DS4700 EXPRESS
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