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Methods and systems of cache memory management and snapshot operations

  • US 7,124,243 B2
  • Filed: 05/16/2003
  • Issued: 10/17/2006
  • Est. Priority Date: 05/16/2003
  • Status: Active Grant
First Claim
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1. A cache memory management system in a data storage system, comprising:

  • a cache memory including a cache directory including a hash table, hash table elements, and cache line descriptors and a plurality of cache lines, wherein a first cache line descriptor has a one-to-one association with a first cache line; and

    a cache manager using a hashing function to convert a first request for data to index to a first hash table pointer and a second request for data to index to a second hash table pointer in the hash table, wherein the first hash table pointer points to a first hash table element and the second hash table pointer points to a second hash table element of a linked list of hash table elements in the cache directory, wherein the first hash table element and the second hash table element point to the first cache line descriptor in the cache directory.

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