Storage system including hierarchical cache metadata

Electrical computers and digital processing systems: memory – Addressing combined with specific memory configuration or... – Addressing cache memories

Reexamination Certificate

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Details

C711S122000, C711S118000

Reexamination Certificate

active

07130956

ABSTRACT:
A storage system including hierarchical cache metadata storages includes a cache, a first metadata storage, and a second metadata storage. In one embodiment, the cache may store a plurality of data blocks in a first plurality of locations. The first metadata storage may include a plurality of entries that stores metadata including block addresses of data blocks within the cache. The second metadata storage may include a second plurality of locations for storing metadata including the block addresses identifying the data blocks within the cache. The metadata stored within the second metadata storage may also include pointers to the data blocks within the cache. The cache and the first metadata storage are non-volatile storages. However, the second metadata storage may be a volatile storage.

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Notification of Transmittal of the International Search Report and the Written Opinion of the International Searching Authority, or the Declaration for International Application No. PCT/US2005/004317, Jun. 6, 2005.
Written Opinion of the International Searching Authority for International Application No. PCT/US2005/004317, Jun. 6, 2005.

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