Ronald P Proulx

US Patent:

8380926, Feb 19, 2013

Filed:

Mar 31, 2010

Appl. No.:

12/751783

Inventors:

Robert P. Foley - Clinton MA, US
Ronald D. Proulx - Boxborough MA, US
Adi Ofer - Sunnyvale CA, US

Assignee:

EMC Corporation - Hopkinton MA

International Classification:

G06F 12/00

US Classification:

711114, 711E12078

Abstract:

A method is used in handling sector edges. Input/output (I/O) requests to a storage device are handled. The I/O requests use a different sector size format than that of the storage device. An I/O request is received for a write operation at a logical address of a virtual device. The write operation specifies new data to be written to the virtual device. A logical sector associated with the logical address is determined. The logical sector is mapped to a portion of a physical sector of the storage device. The sector edge of the physical sector is read into a RAID-protected memory. The read sector edge is written together with the new data to the storage device.

US Patent:

20220300181, Sep 22, 2022

Filed:

Mar 18, 2021

Appl. No.:

17/205305

Inventors:

- Hopkinton MA, US
Ronald D. Proulx - Boxborough MA, US
Shaoqin Gong - Beijing, CN
Baote Zhuo - Beijing, CN
Xiaobo Zhang - Beijing, CN

Assignee:

EMC IP Holding Company LLC - Hopkinton MA

International Classification:

G06F 3/06

Abstract:

Techniques for storage management may include: adding first storage devices to a pool, wherein prior to adding the first storage devices to the pool, the pool includes second storage devices with existing physical storage units (PUs) distributed across the second storage devices; and in response to adding the first storage devices to the pool, performing processing to evenly distribute the existing PUs among the pool of storage devices, said processing including: defining logical pairs of storage devices in accordance with rules; binding each of the logical pairs to a resiliency set; determining that a first PU of the existing PUs includes disk slices that span across more than a single resiliency set; and in response to determining that the first PU includes disk slices that span across more than a single resiliency set, performing second processing to restripe the first PU in accordance with a target layout.

US Patent:

20210034462, Feb 4, 2021

Filed:

Jul 30, 2019

Appl. No.:

16/526547

Inventors:

- Hopkinton MA, US
Shuyu Lee - Acton MA, US
Ronald D. Proulx - Boxborough MA, US

International Classification:

G06F 11/10
G06F 3/06
G06F 12/02

Abstract:

A technique is directed to storing data on a plurality of storage devices of a data storage array. The technique involves, on each storage device of the plurality of storage devices, providing large disk extents and small disk extents for allocation to RAID extents. The technique further involves forming, from the large disk extents, a user-data RAID extent to store user data for the data storage array. The technique further involves forming, from the small disk extents, an internal-metadata RAID extent to store internal metadata for the data storage array. In some arrangements, spare space is reserved on one or more storage devices between large and small disk extents.