Techniques using an encryption tier property with application hinting and I/O tagging
US9684593B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 12, 2013 |
| Grant date | Jun 20, 2017 |
| Priority date | — |
| Expiry date | May 26, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F12/1441
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Techniques are described for storing data. A command is issued from a client to a data storage system. The data storage system includes a plurality of storage tiers comprising a first storage tier of physical storage devices and a second storage tier of physical storage devices, wherein data stored on any physical storage device of the first storage tier is stored in an encrypted form and data stored on any physical storage device of the second storage tier is not stored in an encrypted form. The command includes a hint indicating whether data stored at a first logical address range of a first logical device is stored in an encrypted form. The command is received at the data storage system. First data written to the first logical device at the first logical address range is stored on one or more physical storage devices of any of said first storage tier and said second storage tier in accordance with the hint.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.