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I/O device and computing host interoperation

  • US 9,389,805 B2
  • Filed: 08/08/2012
  • Issued: 07/12/2016
  • Est. Priority Date: 08/09/2011
  • Status: Active Grant
First Claim
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1. A method comprising:

  • at a storage device and from a computing host, receiving a command comprising a specification, the specification comprising at least one of a plurality of non-standard specifications, the non-standard specifications comprising one or more non-standard command modifiers; and

    in response to the specification comprising a particular one of the non-standard command modifiers, executing the command according to the particular non-standard command modifier, and storing an indication of the particular non-standard command modifier in an entry of a map associated with a logical block address (LBA) of the command,wherein at least one of the non-standard specifications identifies a particular one of a plurality of data destinations, the data destinations comprising a plurality of data bands,wherein the data bands are dynamically changeable in number, arrangement, size and type and correspond to one or more of a database journal data band, a hot data band, and a cold data band,wherein the database journal data band is reserved for database journal type data,wherein in response to the computing host writing a relatively long sequential stream, the hot data band grows in size, andwherein a shadow copy of the map is stored in a memory of the computing host.

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