Invention Grant
- Patent Title: Accessing a volume in a distributed environment
- Patent Title (中): 在分布式环境中访问卷
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Application No.: US12749724Application Date: 2010-03-30
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Publication No.: US08392680B1Publication Date: 2013-03-05
- Inventor: Assaf Natanzon , Yuval Aharoni , Lev Ayzenberg
- Applicant: Assaf Natanzon , Yuval Aharoni , Lev Ayzenberg
- Applicant Address: BM Hamilton
- Assignee: EMC International Company
- Current Assignee: EMC International Company
- Current Assignee Address: BM Hamilton
- Agency: Daly, Crowley, Mofford & Durkees, LLP
- Main IPC: G06F12/00
- IPC: G06F12/00

Abstract:
In one aspect, a method includes exposing a set of storage volumes to a host at a requested point in time, in a virtual access mode. The set of storage volumes are handled by distributed virtual consistency groups (CGs) having a background process wherein the distributed virtual CGs update the set of storage volumes to the requested point in time. The method also includes exposing a first service storage volume at a data protection appliance, determining if the virtual CGs have rolled back and using at least one of a central manager and a splitter to account for input/output requests (IOs) when a virtual CG has not rolled back.
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