Shifting wearout of storage disks
AssigneeInternational Business Machines Corporation
InventorsJEFFERY M. FRANKE, JAMES A. O'CONNOR
Life of this patent
Estimating the term…
Abstract
Technical solutions are described that shift wearout of an array of storage disks in a storage system. In an aspect, a method includes receiving a request to write data to the storage system. The method also includes generating checksum data corresponding to the data and dividing the checksum data into portions of distinct sizes. The method also includes writing each portion of the checksum data onto a respective storage disk in the array.
Claims12
-9. (canceled)
A storage system comprising:
- a plurality of storage disks in an array;
- and
- a controller that stores data across the storage disks, the controller configured to:
- receive a request to write data to the storage system;
- generate checksum data corresponding to the data to be written;
- divide the checksum data into portions of distinct sizes;
- and
- write each portion of the checksum data onto a respective storage disk in the array.
A computer program product for staggering wearout of storage disks arranged in an array, the computer program product comprising a computer readable storage medium having program instructions embodied therewith, the program instructions executable by a processor to cause the processor to:
- receive a request to write data to the array;
- generate checksum data corresponding to the data to be written;
- divide the checksum data into portions of distinct sizes, wherein the sizes of the portions of the checksum data are based on a schedule to stagger the wearout of the storage disks;
- and
- write each portion of the checksum data onto a respective storage disk in the array.
Dependencies are inferred from the claim text.