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STORAGE DEVICE THAT SECURES A BLOCK FOR A STREAM OR NAMESPACE AND SYSTEM HAVING THE STORAGE DEVICE

  • US 20160313943A1
  • Filed: 08/26/2015
  • Published: 10/27/2016
  • Est. Priority Date: 04/24/2015
  • Status: Active Grant
First Claim
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1. A storage device, comprising:

  • a nonvolatile semiconductor memory device including a plurality of physical blocks; and

    a memory controller configured to;

    associate one or more physical blocks to each of a plurality of stream IDs,execute a first command containing a first stream ID received from a host, by storing write data included in the write IO in the one or more physical blocks associated with the first stream ID, andexecute a second command containing a second stream ID received from the host, by selecting a first physical block that includes valid data and invalid data, transfer the valid data stored in the first physical block to a second physical block, and associate the first physical block from which the valid data has been transferred, with the second stream ID.

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