Data updating technology
US10725662B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 20, 2018 |
| Grant date | Jul 28, 2020 |
| Priority date | — |
| Expiry date | Aug 20, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2212/281
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A storage system includes a management node and a plurality of storage nodes forming a redundant array of independent disks (RAID). When the management node determines that not all data in an entire stripe is updated based on a received write request, the management node sends update data chunk obtained from to-be-written data to corresponding storage node. The storage node do not directly update, based on the received update data chunks, data block stored in storage device of the storage node, but store the update data chunk into non-volatile memories (NVM) cache of the storage node and send the update data chunk to another storage node to backup. According to the data updating method, write amplification problems caused in a stripe update process can be reduced, thereby improving update performance of the storage system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.