How Thin Image uses V-VOLs

V-VOLs are virtual volumes that do not have any physical storage space. Thin Image uses V-VOLs to access snapshot data from hosts, so if you are using a storage system that does this, V-VOLs are required to assign an S-VOL to snapshot data. If the storage system does not need to access snapshot data from hosts, V-VOLs are not necessary.

You can release the V-VOLs that are being used as Thin Image S-VOLs from assignment of snapshot data. Released V-VOLs can be assigned to other snapshot data.

You cannot release definitions of V-VOLs if the V-VOLs are being used as Thin Image secondary volumes; you must first release the Thin Image pairs that are using the V-VOLs.