Hardware manual
Group Administration Advanced volume operations
10–5
About reported volume size
You can change the reported size of a volume while the volume is online and without disrupting access to the
volume.
Warning: No
t all operating systems, file systems, and applications easily handle volume size changes or behave
in a predictable manner when you change a volume size. Before changing a reported volume size, Dell
recommends that you fully understand the impact on the operating system, file system, and applications
using the volume.
Restriction: Y
o
u cannot change the size of a template volume.
Changing the reported volume size affects the space that the group al
locates to the volume and for volume
snapshots and replication:
• For a volume that is not thin-provisi
oned, changing the reported size proportionally changes the amount of
space the group allocates to the volume (the volume reserve).
• For a thin-provisioned volume, changing the reported size changes
the minimum volume reserve, in-use space
warning limit, and maximum in-use space, because they are based on a percentage of the reported size. The
space that the group allocates to the volume (the volume reserve) might also change.
• If the volume reserve changes due to
the reported volume size
change, snapshot space and replication space
also changes.
Note: If you are replicating the volume, the secondary group
does not recognize the reported size change until
the next replication.
Increasing the reported size of a volume
You can increase the reported size of the volume, while the volume remains online.
See About reported volume size on pa
ge 10-5 for information on the impact of changing the reported size.
1. Click
Volumes, then expand Volumes, then select the volume, then click Modify settings, and then click
the
Space tab.
2. In the Modify volume settings – Space dialog box, specify the new reported volume size in the Volume size
field. If the size you specify is not a multiple if 15MB, the group rounds up the value to the nearest multiple of
15.
The values in the Pool Space table change, based on
the new volume size. If you configured the volume for
replication, a table showing delegated space on the replication partner also appears. If the new volume size
exceeds the capacity of a pool, the free space cell displays a negative value.
3. For a thin-provisioned volume, optionally modify the in-use warning value
and maximum in-use space value
using the slider bars. See Thin provisioning space settings on
page 10-2.
4. Click
OK.
5. Optionally, confirm that you want to create a snapshot
of the current volume prior to the resizing.