Patent ID: 8612656
Filing Date: 2013-12-17
Classification: G06F

Abstract:
1. A data storage system comprising: a controller for implementing device physical location identification in a Serial Attached SCSI (SAS) fabric in a data storage system; said controller comprising: said device physical location identification including a Resource Path Group (RPG), said RPG providing a unique persistent physical locator of an enclosure physical slot for a storage device in the data storage system; said RPG including at least two Resource Paths (RPs), each RP being fixed size including a first byte identifying an RP type and a series of bytes defining a series of egress ports and any unused entries; and said first byte identifying said RP type being based upon a cable end vital product data (VPD) label corresponding to the storage device, said cable end VPD label being provided to visually identify a respective storage device, and said first byte identifying said RP type making unique each said RP of the at least two Resource Paths (RPs) from the storage device; and a persistent RPG being stored within device metadata on the storage device.