Once a QR Volume has been recovered, you may decide to continue running the
application from that volume on a permanent basis. In that case, you will
probably want to reconfigure QR Agent to treat that volume as the primary
volume.
To convert a QR Volume into a
primary volume:
Use the QR Volume Details screen to
identify the QR Policy and Scratch Volume Pool associated with the QR
Volume.
Go to the Scratch Volume Pool in the CommCell Browser and find the
destination volume.
Right-click on the destination volume and select Release
from the drop-down menu. This will cause the QR Volume association to be
removed from the volume, and the destination volume itself will be removed from
the Scratch Volume Pool.
Reconfigure the QR Agent subclient content to reflect the new primary
volume, and remove the old primary volume from the subclient.
Create a Snapshot of a Subclient
Before you Begin
Ensure there are no handles on the destination volumes before creating the
QR Volume.
After selecting the QR Volume type and any advanced options, click OK.
The QR Volume operation will begin and you can track the progress of the job in the Job Controller window.
Create QR Volume(s) allows you to secure data immediately without having to wait for
the scheduled QR Volume Creation time. This capability can be useful if:
You have some particularly valuable volumes that you need to secure immediately.
You want to create a QR Volume that is not routinely secured through a QR Volume
schedule.
After selecting the QR Volume type and any advanced options, click OK.
The QR Volume operation will begin and you
can track the progress of the job in the Job Controller window.
To
create a QR Volume that is incrementally updated:
From the CommCell Browser, right-click the subclient that you want to copy
and then
click Create QR Volume(s).
From the QR Volume
Creation window, select when you want to run the job by clicking
Schedule.
It is important to note that Incrementally update QR Volume(s) is only
available when Schedule is selected.
Select the type of operation that you want to initiate. Select
Incrementally update QR Volume(s).
One of the available Advanced Options when you create a QR Volume that is
incrementally updated (and when the associated QR Policy has Recovery Points
enabled) is the option to mount the latest Recovery Point to a specified mount
point. This option, Mount Destination Snap, allows access to the destination
snap during the next incremental QR Volume creation job when the destination
volume is normally not accessible. This provides uninterrupted access to the
destination even during the copy phase of the next incremental QR Volume
creation job.
After selecting the QR Volume type and any advanced options, click OK.
Your QR Volume Creation will execute according to the specified schedule.
The first operation will be a full QR Volume creation. Subsequent updates will
be made incrementally according to the schedule you have created.
Delete QR Volumes
When a QR Volume is no longer needed, you can delete it to release the volume
for other uses.
To delete a QR Volume:
Go to the QR Volume Browse window.
Select the volume.
Click Delete.
The following restrictions apply to QR Volume deletion:
A QR Volume cannot be deleted when the In Use flag is set.
This flag is set automatically by a QR Volume recovery
operation to prevent the QR Volume from being pruned or deleted while an
application is using it. You can clear the flag on the QR Volume Details screen.
A QR Volume cannot be deleted while it is mounted on a host. Remove all
mount points from the QR Volume before you delete it.
In addition to deleting QR Volumes, they can be released. Releasing a QR
Volume allows it to be selected for future operations (overwriting any data
existing on the volume).
Mount and Unmount QR Volumes
QR Volumes may be mounted or unmounted like any other disk volume. The QR
Volume can be mounted on a different host, provided that the host has the QR
Agent or
MediaAgent software installed.
You can add or remove mount points
on a QR Volume from the QR browser or from Volume Explorer.
To add or remove mount points from the QR browser:
Open/go to the QR Volume Browse window.
Select a QR Volume.
Right-click Details, and go to the Mount Points tab.
Select the host machine where the volume will be mounted.
To add or remove mount points from Volume Explorer:
SnapVault snapshots cannot be mounted but you can create a CIFS (Windows) or NFS (Unix) share to the QR source or
destination snapshot. See
Create CIFS/NFS Shares for SnaVault Snapshots for more information.
Create or Remove CIFS/NFS Shares for SnapVault Snapshots
For SnapVault snapshots CIFS (Windows) or NFS (Unix) shares to the QR source
or destination snapshot can be created.
You can create or remove CIFS/NFS shares to the QR source or destination
snapshots from the QR browser.
To
create or remove CIFS/NFS shares from the QR browser:
Open/go to the QR Volume Browse window.
Select a SnapVault snapshot.
Right-click Details, and go to the CIFS/NFS tab.
Select the host machine where the share will be created.
Click ADD, and specify the share name in the Add Share name
dialog box.
For windows, you can specify any share name but in case of unix, the export
name is always set to the full path on the file server and cannot be modified.
You can schedule QR jobs to occur with the following procedure. You will be
prompted to create a schedule for the job after selecting your QR Volume
creation
options. See Scheduling for more
information.
Your QR Volume Creation will execute according to the specified schedule.
Transfer Data from a QR Volume to a New Primary Volume
In certain disaster recovery scenarios, application data can be accessed from
the associated QR Volume. For example, this may be necessary if the storage
subsystem containing the primary volumes becomes unavailable for any
reason.
Once the primary storage subsystem is available, in most cases it is
desirable to transfer the contents of the temporary QR Volume to a new primary
volume on the primary storage subsystem. This is desirable because the storage
subsystems containing your primary volumes are usually significantly more
powerful and/or more expensive than the storage used for temporary QR Volumes.
To
transfer your data from a temporary QR Volume to a New Primary Volume:
Partition the (new) primary storage device into volumes and add them to
the appropriate Scratch Volume Pools. It may be necessary to re-detect the
devices before they can be added.
Run one or more Create QR Volume jobs to copy data from the temporary
volumes to the permanent volumes.
Convert the new QR Volume(s) (located on the new permanent storage) into
primary volumes, again using the procedure outlined above.
This two-stage procedure may be especially valuable in LAN-only environments,
where it might not be otherwise possible to mount the QR Volumes directly on the
application server.
To convert a QR Volume into a
primary volume: