Expanding Virtual Disk Capacity - HP 2000fc Reference Manual

Expanding Virtual Disk Capacity

You can expand the capacity of a virtual disk by adding drives to it. Because virtual
disk expansion does not require I/O to be quiesced, the virtual disk can continue to
be used while the Expand utility runs. Expanding a virtual disk adds free space after
the space used by existing volumes. You can then create or expand a volume to use
the free space. You can expand only one virtual disk at a time.
The RAID level determines how the virtual disk can be expanded and the maximum
number of drives the virtual disk can have, as shown in the following table.
Table 3-2 Virtual Disk Expansion by RAID Level
RAID Level
Non-RAID
0, 3, 5, 6
1
10
50
Note –
RAID level and size, drive speed, utility priority, and other processes running on the
storage system. You can stop an expansion only by deleting the virtual disk. Before
starting the expansion, make sure to back up the data so that if you need to delete
the virtual disk, you can move the data into a new, larger virtual disk.
To expand a virtual disk:
1. Select Manage > Virtual Disk Config > Vdisk Configuration > Expand Virtual Disk.
For each virtual disk, the virtual disk panel shows a status icon; the name, RAID
level, size, number of disk drives, and number of volumes; and utility status, if any.
2. Select the virtual disk to expand.
3. Select available drives to add to the virtual disk.
74 HP StorageWorks 2000 Family Modular Smart Array reference guide • August 2008
Expansion Capability
Cannot expand.
You can add 1 – 4 drives at a time.
Cannot expand.
You can add 2 or 4 drives at a time.
You can expand the virtual disk, one sub-vdisk at a
time. The added
number of drives as each of the existing
vdisk
s.
Expansion can take hours or days to complete, depending on the virtual disk
sub-vdisk
must contain the same
Maximum Drives
1
16
2
16
32
sub-