The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 06, 2014
Filed:
Sep. 08, 2010
David Flynn, Sandy, UT (US);
John Strasser, Syracuse, UT (US);
Jonathan Thatcher, Liberty Lake, WA (US);
David Atkisson, Draper, UT (US);
Michael Zappe, Arvada, CO (US);
Joshua Aune, South Jordan, UT (US);
Kevin B. Vigor, Salt Lake City, UT (US);
David Flynn, Sandy, UT (US);
John Strasser, Syracuse, UT (US);
Jonathan Thatcher, Liberty Lake, WA (US);
David Atkisson, Draper, UT (US);
Michael Zappe, Arvada, CO (US);
Joshua Aune, South Jordan, UT (US);
Kevin B. Vigor, Salt Lake City, UT (US);
Fusion-io, Salt Lake City, UT (US);
Abstract
An apparatus, system, and method are disclosed for caching data on a solid-state storage device. The solid-state storage device maintains metadata pertaining to cache operations performed on the solid-state storage device, as well as storage operations of the solid-state storage device. The metadata indicates what data in the cache is valid, as well as information about what data in the nonvolatile cache has been stored in a backing store. A backup engine works through units in the nonvolatile cache device and backs up the valid data to the backing store. During grooming operations, the groomer determines whether the data is valid and whether the data is discardable. Data that is both valid and discardable may be removed during the grooming operation. The groomer may also determine whether the data is cold in determining whether to remove the data from the cache device. The cache device may present to clients a logical space that is the same size as the backing store. The cache device may be transparent to the clients.