HP Visualize J5000 hp Visualize J5000, J7000 workstations owner's guide (a4978 - Page 82

The Hot-Plug Process, HP-UX System Administration, Tasks

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NOTE Hot-Pluggable Hard Disk Drives The Hot-Plug Process The system problem for this example is that the disk at hardware address 10/0/14/0.0 has a head crash, and as a result, is unusable. The steps described in the Hot-Plug Procedure section below outline a method that can be used to recover from this state. 1. All of the replaced disk's in-use extents must belong to mirrored logical volumes which were created with the "strict" option (-s); see the documentation for MirrorDisk/UX. 2. You must have an up-to-date configuration backup file. This is done automatically each time an LVM command changes LVM configuration. The default backup file's path is: /etc/lvmconf/base_vg_name.conf 3. The replacement disk must be the same product ID as the replaced one. HP often uses different manufacturers for disks having the same product number. The hot-plug manual procedure will not update the disk driver's internal information to that of the replaced disk. The replacement disk will have the same capacity and block size as the defective disk because they have the same product number. The only field that could be incorrect is the string specifying the vendor's name. This will not affect the behavior of the LVM. If it is desired to update the manufacturers' name, the disk's volume group must be deactivated and reactivated. See the HP-UX System Administration Tasks manual for details. 82 Chapter 3

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82
Chapter 3
Hot-Pluggable Hard Disk Drives
The Hot-Plug Process
The system problem for this example is that the disk at hardware
address 10/0/14/0.0 has a head crash, and as a result, is unusable. The
steps
described
in
the
Hot-Plug
Procedure
section
below
outline
a
method that can be used to recover from this state.
1.
All of the replaced disk’s in-use extents must belong to mirrored
logical volumes which were created with the “strict” option (
-s
); see
the documentation for MirrorDisk/UX.
2.
You must have an up-to-date configuration backup file. This is done
automatically
each
time
an
LVM
command
changes
LVM
configuration.
The default backup file’s path is:
/etc/lvmconf/base_vg_name.conf
3.
The replacement disk must be the same product ID as the replaced
one.
NOTE
HP often uses different manufacturers for disks having the same product
number. The hot-plug manual procedure will not update the disk driver’s
internal information to that of the replaced disk.
The replacement disk will have the same capacity and block size as
the defective disk because they have the same product number. The
only field that could be incorrect is the string specifying the vendor’s
name. This will not affect the behavior of the LVM. If it is desired to
update the manufacturers’ name, the disk’s volume group must be
deactivated and reactivated. See the
HP-UX System Administration
Tasks
manual for details.