Patent ID: 9009438
Filing Date: 2015-04-14
Classification: G06F

Abstract:
1. A system for efficient space reclamation, the system comprising: a storage area network (SAN) virtualization device providing at least one thinly provisioned parent SAN storage volume having logical size larger than physical size and comprised of one or more child disk storage volumes; wherein the physical size of the thinly provisioned parent SAN storage volume is provided by the one or more child disk storage volumes; a disk virtualization device providing a thinly provisioned child disk storage volume of the child disk storage volumes, the thinly provisioned child disk storage volume having logical size larger than physical size, the disk virtualization device comprising an advertise module that advertises that the thinly provisioned child disk storage volume has logical size larger than physical size; a receive module that receives a first reclamation command for the thinly provisioned parent SAN storage volume; an identify module that identifies the thinly provisioned child disk storage volume of the child disk storage volumes; and a send module that sends a second reclamation command to the disk virtualization device.