Zero detection within sub-track compression domains
US10853257B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 24, 2016 |
| Grant date | Dec 1, 2020 |
| Priority date | — |
| Expiry date | Jul 11, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2212/7207
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Allocation of physical storage capacity within a storage array may be managed in standard size allocation units, e.g. 128 kb tracks, and smaller sub-allocation units, e.g. 32 kb quarter tracks. Data associated with sub-allocation units that match a known pattern may be represented by a hint rather than data in storage. The hint may be used to mitigate overhead associated with accessing backend storage. The hint may also mitigate the need for performing compression/decompression of the corresponding sub-allocation unit if the data is compressed. In response to a read or write request associated with an allocation unit organized into sub-allocation units, only those sub-allocation units that are required to service the read or write request and fail to match a pattern are accessed, decompressed or compressed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.