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. 01, 2009
Filed:
Sep. 30, 2007
Kalaivani Arumugham, Sunnyvale, CA (US);
Santosh Rao, Santa Clara, CA (US);
Gopal Sharma, San Jose, CA (US);
Poonam Dhavale, Sunnyvale, CA (US);
Randy Shingai, San Jose, CA (US);
Ronald S. Karr, Sunnyvale, CA (US);
Oleg Kiselev, Palo Alto, CA (US);
Shie-rei Huang, Saratoga, CA (US);
Kalaivani Arumugham, Sunnyvale, CA (US);
Santosh Rao, Santa Clara, CA (US);
Gopal Sharma, San Jose, CA (US);
Poonam Dhavale, Sunnyvale, CA (US);
Randy Shingai, San Jose, CA (US);
Ronald S. Karr, Sunnyvale, CA (US);
Oleg Kiselev, Palo Alto, CA (US);
Shie-Rei Huang, Saratoga, CA (US);
Symantec Operating Corporation, Mountain View, CA (US);
Abstract
A system employing asymmetric distributed block virtualization includes a volume server, a plurality of volume clients, and one or more physical block devices. The volume server aggregates storage in the physical block devices into a logical volume and makes the logical volume accessible to the volume clients for input/output (I/O) operations. In order to manage different I/O access requirements (such as read-only access versus read-write access) of the volume clients, the volume server maintains a different I/O access policy for each volume client to control the kinds of input/output operations that the volume client is allowed to perform on the logical volume.