David Michael Zeryck

US Patent:

8549224, Oct 1, 2013

Filed:

Dec 16, 2009

Appl. No.:

12/639469

Inventors:

David Zeryck - Portland OR, US
Oufei Zhao - Needham MA, US
Weijing Song - Acton MA, US
Wolfgang Klinger - Whitinsville MA, US
John Freeman - Northbridge MA, US
Daniel Rice - Sturbridge MA, US

Assignee:

EMC Corporation - Hopkinton MA

International Classification:

G06F 12/00

US Classification:

711114, 711E12069

Abstract:

In an analyzer device, a method for identifying a logical unit (LUN) of a data storage system as a candidate for migration to a second storage group is presented. The method includes receiving, by the analyzer device, a set of data associated with activity of the LUN of a first storage group, comparing, by the analyzer device, a performance metric value of a performance metric of the set of data, associated with the LUN, to a performance metric threshold associated with the performance metric, and when the performance metric value corresponds to the performance metric threshold, categorizing, by the analyzer device, the LUN as a candidate for storage on the second storage group, the second storage group distinct from the first storage group and having a disk type different from that of the first storage group.

US Patent:

20050050236, Mar 3, 2005

Filed:

Sep 15, 2004

Appl. No.:

10/941703

Inventors:

David Zeryck - Chelmsford MA, US
Dave Harvey - Newton MA, US
Jeffrey Lucovsky - Cary NC, US

International Classification:

G06F003/00

US Classification:

710008000

Abstract:

A computer storage architecture utilizing layered device drivers enables a user to create and install a device driver into a computer. The device driver is installed into the storage unit through a registration process. In order to permit the user to specify a device driver stack for the device driver and specify the relative position of the device driver within the device driver stack, a novel layered device driver registration system that is separate from a operating system device driver registration system is utilized. The layered device driver registration system enables the user to install one or more device drivers and to specify the placement of each device driver relative to the other device drivers in various device driver stacks. The layered device driver registration system allows a device driver to be dynamically inserted into or removed from a particular device driver stack.

US Patent:

6832379, Dec 14, 2004

Filed:

Aug 17, 1999

Appl. No.:

09/375331

Inventors:

David Zeryck - Chelmsford MA
Dave Harvey - Newton MA
Jeffrey Lucovsky - Cary NC

Assignee:

EMC Corporation - Hopkinton MA

International Classification:

G06F 900

US Classification:

719327, 719321, 717168

Abstract:

A computer storage architecture utilizing layered device drivers enables a user to create and install a device driver into a computer. The device driver is installed into the storage unit through a registration process. In order to permit the user to specify a device driver stack for the device driver and specify the relative position of the device driver within the device driver stack, a novel layered device driver registration system that is separate from a operating system device driver registration system is utilized. The layered device driver registration system enables the user to install one or more device drivers and to specify the placement of each device driver by relative to the other device drivers in various device driver stacks. The layered device driver registration system allows a device driver to be dynamically inserted into or removed from a particular device driver stack.