Replacing Hbas; Preparation For Replacing Hbas In A Bladesymphony Environment - Hitachi XP P9500 User Manual

• Add devices to or remove devices from the list of devices to be managed
by HDLM

Replacing HBAs

You can replace HBAs without stopping any applications when all of the
following conditions are satisfied:
• The OS on the host is either of the following:
¢
¢
• The host allows HBA replacement, and the new HBAs are of the same
type as the HBAs you replace.
• Multiple HBAs are used, and the paths that pass through these HBAs are
connected to the same LU.
• Multiple paths to the LU are active.
For details on how to replace HBAs, see
4-23. Note, however, that in a BladeSymphony environment, you must make
sure that you perform the procedure described in
HBAs in a BladeSymphony environment on page 4-22
HBAs.

Preparation for replacing HBAs in a BladeSymphony environment

In a BladeSymphony environment, before you replace HBAs, perform the
following procedure to ensure that the acpiphp module has been loaded.
To ensure that the acpiphp module has been loaded:
1 Execute the lsmod OS command.
.
# /sbin/lsmod | grep acpiphp
acpiphp
If the acpiphp module has been loaded, replace the HBAs as described in
Procedure for replacing HBAs on page
not been loaded, continue to step 2.
2 Create the acpiphp.modules file.
.
First, execute the following command:
# vi /etc/sysconfig/modules/acpiphp.modules
Next, edit the acpiphp.modules file as follows:
#/bin/bash
/sbin/modprobe acpiphp
Save the changes to the file, and then use the chmod OS command to set
execution permissions as follows:
4-22
Red Hat Enterprise Linux 5
Red Hat Enterprise Linux 6
58713
HDLM Operation
Hitachi Dynamic Link Manager User Guide (for Linux(R))
Procedure for replacing HBAs on page
Preparation for replacing
before replacing the
0
4-23. If the acpiphp module has