198 Configuration: Premium Feature— Remote Replication
RAID Controller Module Ownership/Preferred Path
During a remote replication operation, the RAID controller module that owns
the primary virtual disk must correspond to the RAID controller owning the
secondary volume on the remote array. If both virtual disks do not have the
same preferred RAID controller module when a remote replication begins, the
ownership of the secondary virtual disk is automatically transferred to the
preferred RAID controller module of the primary virtual disk.
• When the remote replication is completed or is stopped, ownership of the
secondary virtual disk is restored to its preferred RAID controller module.
• If ownership of the primary virtual disk is changed during the remote
replication, ownership of the secondary virtual disk is also changed.
If any of the following conditions apply to your RAID controller module, you
must manually change module ownership to the alternate RAID controller
module to allow the remote replication to finish:
• The status of the remote replication is
In Progress
.
• The preferred RAID controller module of the primary virtual disk fails.
• Transfer of ownership does not occur automatically during failover.
CAUTION: To avoid possible loss of data, verify that either the virtual disks are
not in use, or a multi-path driver is installed on the host. If you change the RAID
controller module ownership/preferred path while an application is using one of
the virtual disks, I/O activity is disrupted and I/O errors may occur.
Viewing Information About a Remote Replication or Replication
Repository Virtual Disk
In MD Storage Manager, the Storage Array Profile and the Properties pane
display information about the physical and logical characteristics of the
remote replication.
book.book Page 198 Friday, September 23, 2011 2:46 PM
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