HP P6000 Continuous Access Implementation Guide (T3680-96431, August 2012)

You also have to take into account that the DR groups may have changed membership
(or new ones have been created) since the time the original source array was destroyed.
• If you are not using a utility script for recovery, re-create all DR groups on the source
array using the information recorded in “Configuration form ” (page 126). Specify the
replaced array for the destination.
12. If you used the utility to re-create DR groups on the source array, you must manually re-create
any DR groups that had their source on the failed hardware. The utility will not re-create the
DR groups on the source array if they performed as the destination when the configuration
was captured. After you perform this step, all DR groups reside on the source array.
13. If desired, set all affected DR groups from normal mode to failsafe-enabled mode.
14. Perform one of the following:
• If the original array configuration was captured with the utility, execute
ConfigName_step3 on the new hardware. ConfigName is a user-assigned name
given to the utility script at the time of creation.
• If you are not using a utility script for recovery, present the destination virtual disks on the
array with new hardware to the appropriate hosts using the information you recorded in
Table 8 (page 126).
15. If you used the utility to present destination virtual disks to their hosts, you must manually
present any additional virtual disks that originally had their sources on the failed hardware
to their hosts on the array with new hardware. The utility will not present virtual disks whose
destination was the current source array when the configuration was captured. After performing
this step, all destination virtual disks are presented to hosts.
16. If the replaced array is to be the source for the DR groups, fail over any DR groups. See
“Planned failover” (page 105).
17. Issue operating system commands to restart host I/O on the source array. For more information,
see “Resuming host I/O after failover” (page 118).
18. (Optional) Set the DR groups to the desired Home setting.
Recovering from a disk group hardware failure
Disk group hardware failure occurs when a Vraid cannot be used because there are too many
HDD failures in a disk group. The failure results in an inoperative disk group. This condition is the
result of the loss of one disk for Vraid0, or the loss of two disks for Vraid1 and Vraid5. In each
case, the hardware must be replaced and the disk group data rebuilt. (For a complete description
of disk group failures, see the HP Enterprise Virtual Array Configuration Best Practices White Paper
for your array model.) This section describes the symptoms and recovery of an inoperative disk
group at either the source or destination array.
If an array has only one disk group and that disk group fails, the array becomes inoperative. To
manage the array, you must reinitialize it.
Follow the procedure “Disk group hardware failure on the source array ” (page 114) or “Disk group
hardware failure on the destination array” (page 115).
Failed disk group hardware indicators
If disk group hardware fails, HP P6000 Replication Solutions Manager displays the icons described
in Table 7 (page 114).
Failover and recovery procedures 113