HP 3PAR Application Software Suite for Microsoft Exchange Licenses - Manual (Page 34)

NOTE: Modifications you make to an existing policy are not retroactive. Virtual copies created
under a previous policy (whether numeric or expiration-based) retain the policy setting under which
they were created.
In addition, when you switch policy type, the system retains the virtual copies that exist at the time
of the policy change as follows:
•
If you switch from an expiration-based policy to a numeric-based policy, the system does not
remove the expiration dates from the existing virtual copies, and these existing virtual copies
expire according to their set expiration date.
•
If you switch from a numeric-based policy to an expiration-based policy, the system does not
apply expiration values to the existing virtual copies. These existing virtual copies continue to
reside on the system until you manually delete them or manually set an expiration time for
each individual virtual copy.
Numeric-Based Policies
If you specify a numeric-based policy, you can modify the maximum number of virtual copies
allowed per mailbox database.
•
By default, Recovery Manager allows you to create a maximum of 10 virtual copies per
mailbox database.
•
The numeric-based policy also enables you to set Recovery Manager to automatically remove
the oldest virtual copy for each mailbox database, after the maximum limit of virtual copies
is reached, before creating a new virtual copy. If you do not choose to automatically remove
virtual copies when required in order to create a new virtual copy, you must manually delete
old virtual copies before you can create new copies.
NOTE: A virtual copy must be unmounted to be removed. If the oldest virtual copy for which
retention time has elapsed is mounted (and the maximum limit has been reached), Recovery
Manager displays an error message and cancels creation of the new virtual copy.
To create a new virtual copy after the maximum limit of virtual copies is reached, you must unmount
the oldest virtual copy.
Expiration-Based Policies
If you choose an expiration-based policy, you can set Recovery Manager to automatically remove
virtual copies after a specified period of time has elapsed.
If you specify an expiration time for a remote virtual copy:
•
If HP 3PAR Remote Copy Software is set up in asynchronous periodic mode, Recovery Manager
sets the expiration time for the remote virtual copy on the backup server only, not for the virtual
copy created on the primary server.
•
If Remote Copy is set up in synchronous mode, Recovery Manager sets the expiration time for
both the virtual copy on the primary server and the remote virtual copy on the backup server.
For more information, see the HP 3PAR Remote Copy Software User’s Guide.
The expiration-based policy option is only available if your HP 3PAR Storage System is running
HP 3PAR InForm Operating System Software 2.3.1 or above.
Retention Time Restrictions
When you set a retention time for virtual copies, Recovery Manager creates a virtual lock on the
mailbox database and its virtual copies. The mailbox database and virtual copies created within
the retention period cannot be removed during the retention period.
34 Using the Recovery Manager GUI