Cabling The Exp3800 Expansion Enclosure; Esm Connectors; Connecting The Exp3800 Expansion Enclosure - IBM DCS3860 Installation, User's, And Maintenance Manual

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
1
ESM
Figure 20. ESM connectors
SAS In connector 1
SAS In connector 2
SAS Out connector

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
2. Connect one end of a SAS cable to the drive expansion port 2 on controller A
3. Connect one end of a SAS cable to the drive expansion port 1 on controller B
4. Connect one end of a SAS cable to the drive expansion port 2 on controller 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
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IBM System Storage DCS3860 Storage System: Installation, User's, and Maintenance Guide
SAS in connector 2 SAS out 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.
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.
Connect a SAS cable to this connector and to the SAS In (↑) connector of
another EXP3800.
and the other end to the In (↑) SAS connector 1 on the ESM located in slot A of
the EXP3800 expansion enclosure.
and the other end to the In (↑) SAS connector 1 on the ESM located in slot B.
and the other end to the In (↑) SAS connector 2 on the ESM located in slot A.
and the other end to the In (↑) SAS connector 2 on the ESM located in slot B.
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.