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.

Date of Patent:
Dec. 20, 2011

Filed:

Apr. 30, 2008
Applicants:

Adarsh Seetharam, San Jose, CA (US);

David W. Minnich, Hillsborough, NC (US);

Rithin Shetty, Mountain View, CA (US);

Amol Chitre, Sunnyvale, CA (US);

Guillermo Roa, Raleigh, NC (US);

David B. Bolen, Durham, NC (US);

Inventors:

Adarsh Seetharam, San Jose, CA (US);

David W. Minnich, Hillsborough, NC (US);

Rithin Shetty, Mountain View, CA (US);

Amol Chitre, Sunnyvale, CA (US);

Guillermo Roa, Raleigh, NC (US);

David B. Bolen, Durham, NC (US);

Assignee:

NetApp, Inc., Sunnyvale, CA (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 12/00 (2006.01); G06F 13/00 (2006.01); G06F 13/28 (2006.01); G06F 15/173 (2006.01); G06F 11/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

Techniques introduced here swap logical unit meta-data of a logical unit without offlining the logical unit. In accordance with the techniques, a connection between a network storage controller and a host for the logical unit is maintained while meta-data of the logical unit are swapped with another logical unit available to the network storage controller. The swapping substitutes one logical unit for another without disconnecting the host. Advantageously, the host is not required to perform operations to re-establish a connection. Various software and hardware units can implement the techniques described herein.


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