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STORAGE SUBSYSTEM WITH CONFIGURABLE BUFFER

  • US 20100017542A1
  • Filed: 09/24/2009
  • Published: 01/21/2010
  • Est. Priority Date: 02/07/2007
  • Status: Active Grant
First Claim
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1. A storage subsystem, comprising:

  • a controller coupled to non-volatile storage, the controller capable of writing data to, and reading data from, the non-volatile storage in response to commands received by the storage subsystem from a host system; and

    a buffer memory, the buffer memory capable of receiving data at a higher rate than the non-volatile storage,wherein the controller is configured to implement a write buffer in the buffer memory to buffer write data received from the host system and transfer the write data from the write buffer to the non-volatile storage, and to automatically adjust a size of the write buffer based at least in part on one or more monitored conditions reflective of a likelihood of a data loss in the storage subsystem, so as to vary both a sustained write speed of the storage subsystem and a risk of data loss.

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