You can expand the capacity of a virtual disk
(VDisk) from
the Expanding Virtual Disks panel in the SAN Volume Controller Console.
You can use this capability to change the size of a target or secondary
virtual disk (VDisk).
Introduction
Note: FlashCopy® source and target
VDisks must be the same size. The Metro
Mirror or Global Mirror primary
and secondary VDisks must be the
same size.
Attributes
The
following attributes are displayed:
- Current Capacity
- Displays the current capacity, in megabytes, of the selected VDisk.
Fields
You
can update the following fields:
- Managed Disk
Candidates
- Select the managed disk (MDisk) to
allocate
new extents. Click Add to add the selected
MDisk to the Managed Disks Striped in This Order list.
After you have added all the MDisks to use to expand the capacity
of the VDisk, you can use the arrows to determine the order that they
are used. If MDisks are not selected, data is striped across all of
the MDisks with sufficient free space in the MDisk group.
Note: A mirrored
VDisk is always formatted
whenever it is expanded to maintain read stability.
- Expand Capacity By
- Enter the amount
of megabytes by which you want to expand the
capacity.
- Format Additional Managed
Disk Extents
- Select this option if you want the additional
extents to be formatted
with zeros.
Note: Only the additional extents are formatted,
not the entire VDisk.
Actions
The
following actions are available:
- OK
- Click
this button to expand the VDisk.
- Cancel
- Click this button to exit the panel without expanding the VDisk.