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Connecting expansion units
Attention: The minimum EXP100 ESM firmware level (9551 or later) is required
before attaching an EXP100 to the FAStT100.
After you install the storage server, you can connect additional expansion units. You
can do this at any time after you install the storage server, even while it is turned on
and processing data. You can even install one expansion unit now and an additional
expansion unit later.
Attention: You can add only new expansion units to the storage server. This
means that there must be no existing configuration information on the expansion
unit that you want to install. If the expansion unit that you want to install currently
contains logical drives or configured hot spares, and you want them to be part of
the FAStT100 storage server, you must contact IBM for information. Improper drive
migration might cause loss of configuration and other storage server problems.
To connect a single additional expansion unit to the storage server, perform the
following steps:
Note: The following procedures are for
″
cold-case
″
procedures (the FAStT100 is
powered down when expansion units are connected, as in the case of a new
installation). For
″
hot-case
″
procedures (the FAStT100 is powered on when
expansion units are connected), see “Adding a FAStT EXP100 to an existing
FAStT100 configuration” on page 91.
1. Follow the instructions in your expansion unit installation manual to set up and
mount the new expansion unit.
2. Use the following procedure and Figure 48 on page 54 to connect a single
expansion unit to the storage server:
a. Use a fiber-optic cable to connect to the FC-Expansion Units port on the left
RAID controller in the storage server to the In port on the left ESM board of
the expansion unit.
b. Use a second fiber-optic cable to connect the FC-Expansion Units port on
the right RAID controller in the storage server to the Out port on the right
ESM board of the expansion unit.
c. Ensure that the enclosure ID switch is set to a value different from one set
for the FAStT100 server and other drive expansion enclosures in the loop.
Also, ensure that the link speeds of the expansion units are set to 2 Gb.
Note: When connecting the FAStT100 to EXP100 drive enclosures, do not
use the tens digit (x10) setting. Use only the ones digit (x1) setting to
set unique server IDs or enclosure IDs. For more information, see
“Server ID (Enclosure ID) settings” on page 29.
Chapter 3. Cabling the storage server
53