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:
Dec. 13, 2016
Filed:
Aug. 28, 2013
Compellent Technologies, Eden Prairie, MN (US);
Pradeep Sundarrajan, Minneapolis, MN (US);
Melwyn D'Souza, Edina, MN (US);
Dell International L.L.C., Round Rock, TX (US);
Abstract
A method of data progression in a data storage system having at least two tiers of storage space. A first tier may include storage space in a SLC SSD and a second tier may include storage space in a MLC SSD. The method may include setting a predetermined free space threshold for the first tier of storage space, monitoring free space in the first tier of storage space, and when the amount of available free space in the first tier of storage space decreases to the predetermined free space threshold, generating an on-demand snapshot of at least a portion of the data of the first tier of storage space by designating that data as read-only. The on-demand snapshot may then be transferred to the second tier of storage space, thereby freeing the corresponding portion of data of the first tier of storage space for new writes.