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:
Jan. 13, 2009
Filed:
Jul. 12, 2006
Pei-ching Hwang, Shrewsbury, MA (US);
Michael J. Scharland, Franklin, MA (US);
Arieh Don, Newton, MA (US);
Kenneth A. Halligan, Leominster, MA (US);
Pei-Ching Hwang, Shrewsbury, MA (US);
Michael J. Scharland, Franklin, MA (US);
Arieh Don, Newton, MA (US);
Kenneth A. Halligan, Leominster, MA (US);
EMC Corporation, Hopkinton, MA (US);
Abstract
Two data operations, such as write operations, may be processed at a same time in which the two write operations operate on a same address range span. A first of the write operations may write to the first track and the last track in the span but not tracks therebetween. When processing the first write operation, a lock for the first track is obtained and the data is written to the first track data. A lock for the last track is obtained and it is determined whether all tracks between the first and last tracks are unlocked. If so, data is written to the last track. If not, steps of releasing and then reacquiring the lock for the last track and determining whether intervening tracks are locked are repeated until the intervening tracks are not locked. The last track is then written.