Invention Grant
- Patent Title: Offload of storage system data recovery to storage devices
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Application No.: US17075820Application Date: 2020-10-21
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Publication No.: US11531470B2Publication Date: 2022-12-20
- Inventor: Lior Kamran , Amitai Alkalay
- Applicant: EMC IP Holding Company LLC
- Applicant Address: US MA Hopkinton
- Assignee: EMC IP Holding Company LLC
- Current Assignee: EMC IP Holding Company LLC
- Current Assignee Address: US MA Hopkinton
- Agency: Ryan, Mason & Lewis, LLP
- Main IPC: G06F11/10
- IPC: G06F11/10 ; G06F3/06

Abstract:
A storage system comprises a plurality of storage devices that are configured to store data pages. The data pages are distributed across the plurality of storage devices in a plurality of data stripes. A processing device of a storage controller is configured to identify a data stripe that corresponds to a given data page that was stored on a failed storage device and to provide an indication of the identified data stripe to a first storage device. A first processing device of the first storage device is configured to obtain data pages corresponding to the identified data stripe from at least one storage device other than the failed storage device and to perform a parity calculation based at least in part on the obtained data pages to rebuild the given data page. The rebuilt given data page is then stored on a third storage device.
Public/Granted literature
- US20220121377A1 OFFLOAD OF STORAGE SYSTEM DATA RECOVERY TO STORAGE DEVICES Public/Granted day:2022-04-21
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