Emc Corporation

Emc IP Holding Company LLC

Preston F Crow

Adnan Sahin

Sachin More

Steven T McClure

Ron Arnan

Robert S Mason, Jr

Richard Wheeler

Susan C Nagy

Adi Ofer

Preethi Natarajan

Thomas Earl Linnell

Jonathan I Krasner

Gilad Sade

Serge Joseph Pirotte

In general, in one aspect, the invention relates to a method for processing data, the method includes obtaining, by a host operating system (OS) on a host computing device, a notification of a power down. The further includes, in response to the notification, performing a data storage analysis on data stored in host OS memory to identify a plurality of processing tasks to perform on the data, making a first determination, based on the data storage analysis, that data processing is to be offloaded to a graphics processing unit, and in response to the first determination: sending a data processing request to the processing unit, obtaining a second notification associated with processed data from the graphics processing unit, and storing the processed data in a backup storage device.

Method and system for optimizing a host computing device power down through offload capabilities

Described is storage system and method for reducing power consumption. The storage system has first and second physical disks configured to provide mirroring. The first physical disk is placed into a power-saving mode of operation, while the second physical disk is in an active mode of operation responding to read and write requests. The first physical disk transitions from the power-saving mode of operation to an active mode of operation for destaging writes pending from cache to the first physical disk, while the second physical disk responds to read and write requests. The second physical disk transitions from the active mode of operation to the power-saving mode of operation, while the first physical disk responds to read and write requests.

Power saving mechanisms for a dynamic mirror service policy

Maintaining failure survivability in a storage system includes determining a save time corresponding to an amount of time needed to transfer system data from volatile memory to non-volatile memory, determining a threshold corresponding to time for batteries to run while transferring data from volatile memory to non-volatile memory after a power loss, and providing an indication in response to the save time being greater than the threshold. The system may include a plurality of directors and the save time and the threshold may be determined for each of the directors. Determining a threshold may include determining an amount of battery time provided by battery power following power loss and multiplying the amount of battery time by a factor less than one, such as 0.8.

Adaptive failure survivability in a storage system utilizing save time and data transfer upon power loss

Power-saving mechanisms for a dynamic mirror service policy

Adaptive failure survivability in a storage system using save time and data transfer after power loss

Described is a storage system and method for managing and optimizing power consumption in a storage system. Logical devices are mapped to physical disk drives. A plurality of power profiles is defined. Each power profile is associated with a mode of operation for a physical disk drive. One of the power profiles is assigned to each logical device. One of the physical disk drives is identified for which every logical device mapped to that physical disk drive has been assigned the same power profile. The identified physical disk drive is operated in the mode of operation associated with said same power profile. The mapping of the logical devices to the physical disk drives may be changed in order to group logical devices assigned the same power profile onto the same physical disk drive.

System and method of managing and optimizing power consumption in a storage system

Described is a storage system and method for reducing power consumption in a storage system by shortening seek distances associated with input/output (I/O) requests to a physical disk drive. A sweep direction is set. An offset of a new I/O request is evaluated to determine whether to send the new I/O request to the physical disk drive. The new I/O request is sent to the physical disk drive if the offset is consistent with the sweep direction. Otherwise, sending the new I/O request to the disk drive is deferred until the sweep direction is set to a reverse direction.

System and method of reducing power consumption in a storage system through shortening of seek distances

A memory storage device has a file storage operating system which uses an inode to record and find segments of each data file. The inode includes a plurality of rows. A portion of the rows are written with direct extents pointing to data blocks storing portions of file segments. At least two of the extents point to data blocks having addresses in different logical volumes.

Multi-volume extent based file system

A memory storage device has a file storage operating system that uses inodes to access file segments. Each inode has a plurality of rows. A portion of the rows can store extents pointing, directly or indirectly, to data blocks. Each extent has a field to indicate whether the extent is an indirect extent or a direct extent.

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Ashland, MA, United States of America

Preston F Crow