US 7,024,525 B2Granted

Distributed background track processing

AssigneeEMC Corporation

InventorsBenjamin W. Yoder, Mark J. Halstead, David Meiri, Alexandr Veprinsky

Life of this patent

Estimating the term…

Loading patent…

Abstract

Setting a plurality of table entries in a storage device includes subdividing the table entries into a N tasks, placing each of the N tasks in a memory location disposed within the storage device and accessible by a plurality of internal devices, the plurality of the internal devices accessing the memory location to retrieve at least one of the N tasks, and each of the plurality of the internal devices setting table entries corresponding to at least one of the N tasks retrieved from the memory location. Setting table entries may also include setting logical device table entries to indicate corresponding tracks contain invalid data in connection with operation of remote data transfer between multiple storage devices.

Claims18

Dependent claims

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.

3 more elements

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 subdivided into N tasks, placing each of the N tasks in a memory location disposed within the storage device and accessible by the adaptor units, at least one of the adaptor units accessing the memory location to retrieve at least one of the N tasks, setting table entries corresponding to at least one of the N tasks retrieved from the memory location, and following setting table entries corresponding to at least one of the N tasks, providing an indicator in the memory location that the at least one of the N tasks has been completed wherein a second one of the adaptor units places the N tasks in the memory location and monitors the memory location for the indicators indicating that each of the N tasks have been successfully completed.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application: 11/200,606Filed 10 Aug 2005 · continuation
Priority: 14 Nov 2001
Published: US 2005/0283571 A122 Dec 2005
Granted: 4 Apr 2006
Term ends: Not estimatedThe source records don’t support an estimate.

Classification20 codes

G06F 3/0659
Vertical data movement, i.e. input-output transfer; data movement between one or more hosts and one or more storage devices: command handling…
G06F 3/0601
Digital input from, or digital output to, record carriers , e.g. RAID, emulated record carriers or networked record carriers: interfaces specially…
G06F 3/0604
Specifically adapted to achieve a particular effect: improving or facilitating administration, e.g. storage management
G06F 3/0605
Improving or facilitating administration, e.g. storage management: by facilitating the interaction with a user or administrator

Family

Application60/332,991Us provisional application · filed 14 Nov 2001
Application09/997,810Parent of this continuation-in-part · filed 30 Nov 2001
Application10/224,006Parent of this continuation · filed 20 Aug 2002
US 2005/0283571 A1Pre-grant publication · published 22 Dec 2005
US 6,944,726 B2Parent of this continuation
US 6,862,632 B1Parent of this continuation-in-part
Application10/224,006Parent of this continuation-in-part
US 2003/0093635 A1Published application
US 7,024,525 B2This patent

From the US filing history. Foreign family members aren’t listed.