Patent ID: 7024525

Claim:
A data storage device, comprising: a plurality of host adaptor units that transfer data to and from the storage device; a plurality of disk adaptor units, coupled to the host adaptor units, that exchange data with the host adaptor units; a plurality of disk drives coupled to the disk adaptor units; a plurality of remote adaptor units, coupled to the host adaptor units and the disk adaptor units, that handle remote data transfer between multiple storage devices; and a memory, coupled to the host adaptor units, the disk adaptor units, and the remote adaptor units, the memory containing a table having a plurality of entries, wherein the entries are set by being subdived into N tasks that correspond to a list of tracks to be invalidated that is provided by a first one of the adaptor units, placing each of the N tasks in a memory location disposed within the storage device and accessible by at least a second one of the adaptor units, different from the first one of the adaptor units, that access the memory location to retrieve at least one of the N tasks and that sets table entries corresponding to at least one of the N tasks retrieved from the memory location.