IBM DCS3860, Installation, User'S, And Maintenance Manual

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Cabling the EXP3800 expansion enclosure
The EXP3800 expansion enclosure is a dual ESM unit, which provides additional
storage capacity when attached to the DCS3860 storage system.
ESM connectors
SAS In connector 1
Connect a SAS cable to this connector and to either the drive expansion
port on the DCS3860 controller or the SAS Out (
↓
) connector of another
EXP3800 expansion enclosure.
SAS In connector 2
Connect a SAS cable to this connector and to either the drive expansion
port on the DCS3860 controller or the SAS Out (
↓
) connector of another
EXP3800 expansion enclosure.
SAS Out connector
Connect a SAS cable to this connector and to the SAS In (
↑
) connector of
another EXP3800.
Connecting the EXP3800 expansion enclosure
The DCS3860 storage system supports up to five EXP3800 expansion enclosures
with two physical expansion ports. Multiple EXP3800 expansion enclosures can be
connected by chaining them together.
Complete the following steps to connect the first EXP3800 expansion enclosure to
the DCS3860 storage system.
1. Connect one end of a SAS cable to the drive expansion port 1 on controller A
and the other end to the In (
↑
) SAS connector 1 on the ESM located in slot A of
the EXP3800 expansion enclosure.
2.
Connect one end of a SAS cable to the drive expansion port 2 on controller A
and the other end to the In (
↑
) SAS connector 1 on the ESM located in slot B.
3. Connect one end of a SAS cable to the drive expansion port 1 on controller B
and the other end to the In (
↑
) SAS connector 2 on the ESM located in slot A.
4. Connect one end of a SAS cable to the drive expansion port 2 on controller B
and the other end to the In (
↑
) SAS connector 2 on the ESM located in slot B.
5. Wait until the status of the storage system is Optimal.
6. Add drives to the storage enclosure one at a time. Add drive only after the
IBM DS Storage Manager recognizes the drive you added earlier. Wait at least
30 seconds for the IBM DS Storage Manager to recognize a newly added drive.
1 2
ESM
SAS in connector 1 SAS in connector 2 SAS out connector
Figure 20. ESM connectors
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IBM System Storage DCS3860 Storage System: Installation, User's, and Maintenance Guide