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High speed remote storage controller

  • US 20020083299A1
  • Filed: 12/22/2000
  • Published: 06/27/2002
  • Est. Priority Date: 12/22/2000
  • Status: Active Grant
First Claim
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1. A high speed remote storage controller system for a computer system having cluster nodes of symmetric multiprocessors, comprising one or more remote storage controllers each having a local interface controller, and a local-to-remote data bus, and responsive to a remote resource manager managing the local interface controller for data accesses between clusters of symmetric multiprocessors which are controlled for inter nodal storage operations by one of said remote storage controller, each of which clusters has a plurality of processors, a shared cache memory, a plurality of I/O adapters and a main memory accessible from the cluster, said remote store controller while processing data accesses across a plurality of clusters for data storage operations involving shared memory and inter nodal storage operations enlisting a single one of said local interface controllers to perform remote cast outs, store requests from an I/O adapter, main storage padding operations, and main memory move page operations and while performing remote data storage operations to main memory, said enlisted single local interface controller also handles cross cluster invalidations associated with maintaining inter-nodal cache coherency for said computer system having cluster nodes of symmetric multiprocessors.

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