Method for managing volume groups considering storage tiers

Details Method for managing volume groups considering storage tiers Method for managing volume groups considering storage tiers

2011-08-09

2011-08-09

Song, Jasmine (Department: 2189)

Electrical computers and digital processing systems: memory

Storage accessing and control

Control technique

C711S006000, C711S111000, C711S114000, C711S161000, C711S162000

Reexamination Certificate

active

07996639

ABSTRACT:
A tiered storage system according to the present invention provides for the management of migration groups. When a migration group is defined, a reference tier position is determined and the relative tier position of each constituent logical device is determined. Movement of a migration group involves migrating data in its constituent logical devices to target logical devices. The migration group is then defined by the target devices. A virtualization system makes the transition transparent to host devices.

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