When you pre-allocate space for LUNs and Snapshot copies, you guarantee that the space is used just for those LUNs and Snapshot copies. The pre-allocated space for the LUNs and the Snapshot copies is not available to any other LUNs or Snapshot copies within that same volume.
Before you begin
You have created a volume.
About this task
You should use a host-based Snapshot copy creation software such as SnapDrive to create your Snapshot copies. The following configurations apply at the volume level.
Steps
- Use the vol options command to set space guarantee to volume.
Example
vol options vol1 guarantee volume
- Use the vol options command to set fractional reserve to 100.
Example
vol options vol1 fractional_reserve 100
- Use the vol autosize command to disable volume autosize.
Example
vol autosize vol1 off
- Use the snap reserve command to change the snap reserve setting to 0.
Example
snap reserve vol1 0
- Use the snap reserve command to verify the setting change.
Example
snap reserve vol1
- Use the snap sched command to disable the scheduled creation of Snapshot copies.
Example
snap sched vol1 0 0 0
- Use the snap sched command to verify scheduled creation of Snapshot copies has been disabled.
Example
snap sched vol1
- Use the vol status command to verify changes.
Example
vol status vol1 -v
- Use the snap autodelete command to disable autodelete.
Example
snap autodelete vol1 off
- Use the snap autodelete command to verify your changes.
snap autodelete vol1
Result
The volume is now configured for space-reserved LUNs with Snapshot reserve. You can now create your LUNs for your volume.