HP XC System Software Administration Guide Version 3.2

7. Partition the new disk.
8. Add the new partitions back to their arrays:
# mdadm /dev/md1 -a /dev/sdb1
# mdadm /dev/md2 -a /dev/sdb2
# mdadm /dev/md3 -a /dev/sdb3
The new partition begins synchronizing with the existing corresponding partition
automatically.
9. Use the following two commands to update the mdadm configuration file,
/etc/mdadm.conf, which the mdadm command uses to manage the RAID arrays. This file
also enables you to generate a prototype file for the RAID array with the following command.
Substitute the appropriate disk drive device name for your installation. For example, for an
ITE drive, use /dev/hd*[0–9] in place of the disk parameter; for a SATA drive, use
/dev/sd[a-i]* in place of the disk parameter.
# echo 'DEVICE disk' > /etc/mdadm.conf
# mdadm -detail -scan >> /etc/mdadm.conf
NOTE: Examine such a prototype file carefully to ensure that it is correct before using it.
10. Watch the array update progress with the following command:
# cat /proc/mdstat
Commands for single array can be combined, for example:
# mdadm /dev/md1 -f /dev/hda1 -r /dev/hda1
The fdisk(8), sfdisk(8), and parted(8) manpages provide information on examining a disk and
partitioning a new disk.
For more information about Software RAID implemented on the HP XC system, see Chapter 19
(page 227).
22.5.2 Writing a Boot Block to the RAID Disk
To ensure that the disk can be booted, and because the whole disk was replaced, you must write
a boot block to the new disk. The method to use varies by the platform.
For CP6000 Systems
Follow these steps for CP6000 systems:
274 Servicing the HP XC System