Cabling the EXP2500
The EXP2500 comes with one ESM, which enables you to connect the EXP2500 to
a RAID controller or a BladeCenter SAS connectivity module or another EXP2500
expansion enclosure. Depending on the capabilities of the RAID controller, you can
add multiple EXP2500 units to provide a chain of EXP2500s to the RAID controller.
See the documentation that comes with the RAID controller or the device that
contains the RAID controller for information about the capabilities of the RAID
controller.
When attached to the BladeCenter SAS connectivity module, a EXP2500 can be
used in conjunction with the BladeCenter blade server RAID controllers. Only a
single EXP2500 enclosure can be attached to a BladeCenter SAS connectivity
module SAS port but multiple EXP2500 enclosures can be attached to a
BladeCenter SAS connectivity module.
The EXP2500 ESM contains three 26-pin mini-SAS connectors. There are two In
(
↑
) connectors and one Out (
↓
) connector. If your RAID controller supports more
than one EXP2500 per physical port, you can connect two or more EXP2500s by
chaining them together. See the documentation that comes with your RAID
controller or the device that contains the RAID controller for more information.
To connect a RAID controller or BladeCenter SAS connectivity module to one or
more EXP2500s that have one ESM each, complete the following steps:
1. Connect one EXP2500 to the RAID controller or BladeCenter SAS connectivity
module:
a. Connect one end of a SAS cable to the RAID controller or one of the two
SAS ports on the BladeCenter SAS connectivity module.
b. Connect the other end to the In (
↑
) SAS connector on the ESM in the
EXP2500.
OK
IN
OK
IN
SAS cable
OK
IN
OK
IN
SAS cable
To the IBM SAS RAID controller or
BladeCenter SAS connectivity module
EXP2500
EXP2500
2. If your RAID controller supports connecting multiple EXP2500s, connect a
second EXP2500 to the first EXP2500:
a. Connect one end of a SAS cable to the Out (
↓
) SAS connector on the ESM
of the EXP2500 that you just connected.
b. Connect the other end of the SAS cable to one of the In (
↑
) SAS connectors
on the ESM on the next EXP2500.
Chapter 2. Installation
13
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