Networked raid in a virtualized cluster

Details Networked raid in a virtualized cluster Networked raid in a virtualized cluster

2011-08-16

2011-08-16

Farrokh, Hashem (Department: 2187)

Electrical computers and digital processing systems: memory

Storage accessing and control

Control technique

C711S114000

Reexamination Certificate

active

08001352

ABSTRACT:
Technologies are described herein for providing networked RAID in a virtualized storage cluster. The storage capacity of a storage cluster having two or more storage nodes is organized into tiers. A portion of the available storage capacity is allocated to one tier that is organized using chained declustering. Another portion of the available storage capacity is allocated to another tier that is organized using a networked RAID configuration. The storage cluster monitors the frequency at which data in the storage cluster is accessed. Frequently used data that is stored in the network RAID-configured tier is promoted to the chained declustered-configured tier. Infrequently used data that is stored in the chained declustered-configured tier is demoted to the network RAID-configured tier. The zone size for zones stored in the chained declustered-configured tier may be different than for zones stored in the network RAID-configured tier.

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