Patent · US Active

Accessing a volume in a distributed environment

US8392680B1 · kind B1 · utility

106Cited by

47References

21Claims

0Family size

Assignee

EMC International Company · US

Inventors

Assaf Natanzon · Nes Ziona, IL
Yuval Aharoni · Kfar Sava, IL
Lev Ayzenberg · Netanya, IL

Key dates

Filing date	Mar 30, 2010
Grant date	Mar 5, 2013
Priority date	—
Expiry date	Aug 23, 2031

Classification

Technology area (CPC G)Physics
CPC primaryG06F2201/855
WIPO fieldComputer technology
WIPO sectorElectrical engineering

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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.