188 Configuration: Premium Feature— Remote Replication
Before creating a virtual disk pair, verify the following:
1
The Remote Replication premium feature is installed, enabled and
activated on the primary and secondary storage arrays.
2
The storage arrays containing the two virtual disks you want to replicate
are connected through a Fibre Channel fabric interface.
3
The secondary storage array contains a virtual disk that is equal (or larger)
in capacity than the primary virtual disk in the replicated pair.
4
Both virtual disks are visible to the storage management software.
5
All I/O into the secondary virtual disk is stopped and all file systems are
unmounted.
CAUTION: Creating a replicated virtual disk pair starts a synchronous process
between the primary and secondary virtual disks. This process overwrites all
existing data on the secondary virtual disk and sets the disk to read-only access. If
you have existing data on your secondary virtual disk, back up the data before
creating the replicated virtual disk pair.
Using Remote Replication With Other Features
Remote replication can be used with other disk utility features such as:
• Storage Partitioning
• Snapshot Virtual Disk Premium Feature
• Virtual Disk Copy Premium Feature
• Virtual Disk Expansion (VDE)
Snapshot Virtual Disk and Virtual Disk Copy are premium features that must
be enabled and activated on the primary storage array.
Storage Partitioning With Remote Replication
Storage partitioning allows hosts to share access to virtual disks in a storage
array. A storage partition is created when a collection of hosts (host group) or
a single host is defined, then a virtual disk-to-logical unit number (LUN)
mapping is defined. This mapping allows you to define which host or host
group has access to a particular virtual disk in the storage array.
Storage partition definitions for the local storage array and remote storage
array are independent. Establishing similar definitions on the disk serving in a
secondary role reduces administrative effort required during site recovery.
book.book Page 188 Friday, September 23, 2011 2:46 PM
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