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:
Nov. 27, 2012
Filed:
Nov. 26, 2007
Joseph H. Steinmetz, Loomis, CA (US);
Murthy Kompella, Roseville, CA (US);
Narayan Ayalasomayajula, Sacramento, CA (US);
Donia Sebastian, Roseville, CA (US);
Joseph H. Steinmetz, Loomis, CA (US);
Murthy Kompella, Roseville, CA (US);
Narayan Ayalasomayajula, Sacramento, CA (US);
Donia Sebastian, Roseville, CA (US);
Emulex Design & Manufacturing Corporation, Costa Mesa, CA (US);
Abstract
In various embodiments, the present invention provides virtual disk formatting by intermediate devices including: (1) a storage shelf router and the storage shelf in which the storage-shelf is included, to external computing entities, such as disk-array controllers and host computers; (2) an I/O controller; and (3) a storage-bridge device. Additional embodiments of the present invention enhance virtual formatting by using additional padding, in a dual-abstraction method, to efficiently align virtual-block reads with underlying device blocks. Yet additional embodiments of the present invention allow for tracking and correcting device blocks corrupted during READ-MODIFY operations that occur during virtual-block WRITE operations. Various intermediate devices may employ two or more of the virtual formatting, dual abstraction, and corrupted-device-block tracking methods.