Michael A Neil

US Patent:

8627000, Jan 7, 2014

Filed:

Feb 8, 2010

Appl. No.:

12/701626

Inventors:

Dustin L. Green - Redmond WA, US
Jacob K. Oshins - Seattle WA, US
Michael L. Neil - Mercer Island WA, US

Assignee:

Microsoft Corporation - Redmond WA

International Classification:

G06F 12/00

US Classification:

711112, 711162, 711E12001, 711E12103, 710 58

Abstract:

Described is a technology by which a virtual hard disk is able to continue servicing virtual disk I/O (reads and writes) while a meta-operation (e. g. , copying, moving, deleting, merging, compressing, defragmenting, cryptographic signing, lifting, dropping, converting, or compacting virtual disk data) is performed on the virtual disk. The servicing of virtual disk I/Os may be coordinated with meta-operation performance, such as by throttling and/or prioritizing the virtual disk I/Os. Also described is performing a meta-operation by manipulating one or more de-duplication data structures.

US Patent:

20110197052, Aug 11, 2011

Filed:

Feb 8, 2010

Appl. No.:

12/701624

Inventors:

Dustin L. Green - Redmond WA, US
Jacob K. Oshins - Seattle WA, US
Michael L. Neil - Mercer Island WA, US

Assignee:

Microsoft Corporation - Redmond WA

International Classification:

G06F 15/177
G06F 9/455
G06F 12/00
G06F 12/08
G06F 12/16

US Classification:

713 2, 718 1, 711162, 711118, 711E12001, 711E12103, 711E12017

Abstract:

Described is a technology by which a virtual hard disk is maintained between a far (e.g., remote) backing store and a near (e.g., local) backing store, which among other advantages facilitates fast booting of a machine coupled to the virtual hard disk. Read requests are serviced from the near backing store (e.g., a differencing layer) when the data is available thereon, or from the far backing store (e.g., a base layer) when not. The near backing store may be configured with a cache layer that corresponds to the base layer and a write differencing layer that stores writes, or a single differencing layer may be used for both caching read data and for storing write data. A background copy operation may be used to fill the cache until the far backing store data is no longer needed.

US Patent:

20140122819, May 1, 2014

Filed:

Jan 6, 2014

Appl. No.:

14/148627

Inventors:

Dustin L. Green - Redmond WA, US
Jacob K. Oshins - Seattle WA, US
Michael L. Neil - Mercer Island WA, US

Assignee:

Microsoft Corporation - Redmond WA

International Classification:

G06F 3/06

US Classification:

711162

Abstract:

Described is a technology by which a virtual hard disk is able to continue servicing virtual disk I/O (reads and writes) while a meta-operation (e.g., copying, moving, deleting, merging, compressing, defragmenting, cryptographic signing, lifting, dropping, converting, or compacting virtual disk data) is performed on the virtual disk. The servicing of virtual disk I/Os may be coordinated with meta-operation performance, such as by throttling and/or prioritizing the virtual disk I/Os. Also described is performing a meta-operation by manipulating one or more de-duplication data structures.