Robert A Foley

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:

57300887, Mar 24, 1998

Filed:

Dec 22, 1995

Appl. No.:

8/577501

Inventors:

Robert J. Foley - Upton MA
David V. Lesneski - Gardner MA
William J. Fidurko - Needham MA
Brian Kassabian - Worcester MA

Assignee:

DB Riley, Inc. - Worcester MA

International Classification:

F22D 100

US Classification:

122 7R

Abstract:

Heat recovery apparatus for extracting heat from a hot flue gas stream especially useful on a marine vessel. The apparatus includes a housing having opposite outer end walls, opposite outer side walls, a top wall and a bottom wall with a heat exchanger extending between the end walls spaced downwardly below the top wall, above the bottom wall and inwardly of the outer side walls. An inlet chamber is formed in the housing having an inlet opening in one of the end walls above the heat exchanger for receiving the hot flue gas stream and the inlet chamber includes a downwardly sloping wall for directing the incoming hot flue gas stream to flow downwardly through the heat exchanger toward the bottom wall. A pair of inner side walls are provided on opposite sides of the heat exchanger spaced inwardly of the outer side walls for directing the hot flue gas stream downwardly through the heat exchanger to a low level above the bottom wall. The inner side walls and the inlet chamber wall define a pair of up-flow side chambers between the edges of the heat exchanger and facing outer side walls of the housing for directing flue gases upwardly from the low level for collection adjacent the top wall.

US Patent:

20210342071, Nov 4, 2021

Filed:

Jul 14, 2021

Appl. No.:

17/305752

Inventors:

- Shenzhen, CN
Robert Foley - Clinton MA, US

International Classification:

G06F 3/06

Abstract:

A computer-implemented method for remote direct memory access (RDMA) by a distributed storage node includes receiving a request for an input/output (I/O) process associated with data. In response to the request, a memory segment shared between the operating system and a user process is allocated using an operating system driver of the node. The user process includes an I/O stack for processing the request. The shared memory segment includes a context memory portion storing context information associated with the I/O stack, a header memory portion storing header information for the I/O process, and a data memory portion for storing the data. The shared memory segment is registered for RDMA access with a target storage node. An RDMA transfer is performed between the shared memory segment and the target node to complete the I/O process. The shared memory segment is deallocated upon completion of the RDMA transfer.

US Patent:

20190286523, Sep 19, 2019

Filed:

Jun 5, 2019

Appl. No.:

16/432680

Inventors:

- Hopkinton MA, US
Robert Foley - Clinton MA, US
Daniel Cummins - Hudson NJ, US
Socheavy Heng - Framingham MA, US

Assignee:

EMC IP Holding Company LLC - Hopkinton MA

International Classification:

G06F 11/10

Abstract:

Disclosed herein are techniques for use in managing data storage. For example, in one embodiment, the techniques comprise determining a size of the write request. The size of the write request equating to half or more non-parity data portions in a full stripe of data but less than all non-parity data portions in the full stripe. The techniques comprise performing a process based on the size that includes reading a parity and one or more missing non-parity data portions in the full stripe, verifying the coherency of the missing non-parity data portions by comparing a checksum of the parity and a checksum of the missing non-parity data portions, determining a new parity based on the new data and the missing non-parity data portions, and writing, in response to verifying the coherency of the missing non-parity data portions, the new data and the new parity to a RAID group without writing the one or more missing non-parity data portions to the RAID group, wherein the new data and the new parity are written to the RAID group with a checksum.