Patent ID: 7788462
Filing Date: 2010-08-31
Classification: G06F

Abstract:
1. A method, comprising: receiving a request to write data to a disk pool of a storage hierarchy; wherein the storage hierarchy also includes a tape pool that is lower in the storage hierarchy in comparison to the disk pool, wherein acquisition of hardware resources is required for writing to any defined copy pool, and wherein the hardware resources include at least one of a tape drive, a tape volume, and disk space; acquiring a first set of hardware resources for the disk pool, and acquiring a second set of hardware resources corresponding to a first copy pool that has been defined for the disk pool, in response to receiving the request to write the data to the disk pool; subsequent to acquiring the first and the second set of hardware resources, determining whether the data can be written to the disk pool; in response to determining that the data can be written to the disk pool, performing: in response to determining that the data cannot be written to the disk pool performing: