公开(公告)号：US09684456B1

公开(公告)日：2017-06-20

申请号：US14489757

申请日：2014-09-18

Applicant: EMC IP Holding Company LLC

Inventor： Marik Marshak ,  Adnan Sahin ,  Hui Wang ,  Xiaomei Liu ,  Sachin More

IPC: G06F3/00 ,  G06F3/06

CPC classification number: G06F3/061 ,  G06F3/0649 ,  G06F3/0665 ,  G06F3/0685 ,  G06F3/0689

Abstract: Described are techniques for determining whether to move data between devices. A first cost metric is determined for a first device and a second device. At least one portion of data is selected for movement from one of the first device and the second device to another of the first device and the second device. A second cost metric is determined for the first device and the second device based on moving said at least one portion of data between said first device and said second device. It is determined using the first cost metric and the second cost metric whether to move the at least one portion of data.

公开(公告)号：US10802731B1

公开(公告)日：2020-10-13

申请号：US16259036

申请日：2019-01-28

Applicant: EMC IP HOLDING COMPANY LLC

Inventor： Adnan Sahin ,  Sachin More ,  Preston Crow ,  Ron Arnan

IPC: G06F12/00 ,  G06F3/06 ,  G06F12/0866

Abstract: 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.

公开(公告)号：US10235072B1

公开(公告)日：2019-03-19

申请号：US15233461

申请日：2016-08-10

Applicant: EMC IP Holding Company LLC

Inventor： Adnan Sahin ,  Sachin More ,  Preston Crow ,  Ron Arnan

IPC: G06F12/00 ,  G06F3/06 ,  G06F12/0866

Abstract: 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.