Invention Grant
- Patent Title: Hybrid drive caching in a backup system with SSD deletion management
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Application No.: US15282944Application Date: 2016-09-30
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Publication No.: US10019172B2Publication Date: 2018-07-10
- Inventor: Amit Mitkar , Andrei Erofeev
- Applicant: Commvault Systems, Inc.
- Applicant Address: US NJ Tinton Falls
- Assignee: COMMVAULT SYSTEMS, INC.
- Current Assignee: COMMVAULT SYSTEMS, INC.
- Current Assignee Address: US NJ Tinton Falls
- Agency: Knobbe, Martens, Olson & Bear LLP
- Main IPC: G06F12/00
- IPC: G06F12/00 ; G06F3/06 ; G06F12/0871 ; G06F12/0873

Abstract:
Systems and methods can implement one or more intelligent caching algorithms that reduce wear on the SSD and/or to improve caching performance. Such algorithms can improve storage utilization and I/O efficiency by taking into account the write-wearing limitations of the SSD. Accordingly, the systems and methods can cache to the SSD while avoiding writing too frequently to the SSD to increase or attempt to increase the lifespan of the SSD. The systems and methods may, for instance, write data to the SSD once that data has been read from the hard disk or memory multiple times to avoid or attempt to avoid writing data that has been read only once. The systems and methods may also write large chunks of data to the SSD at once instead of a single unit of data at a time. Further, the systems and methods can write to the SSD in a circular fashion.
Public/Granted literature
- US20170097770A1 INTELLIGENT HYBRID DRIVE CACHING Public/Granted day:2017-04-06
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