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Solid-state storage device with multi-level addressing

  • US 8,566,511 B2
  • Filed: 07/23/2010
  • Issued: 10/22/2013
  • Est. Priority Date: 07/23/2009
  • Status: Active Grant
First Claim
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1. A solid-state storage device comprising:

  • a plurality of flash memory devices;

    a volatile memory; and

    a controller configured to store data received from a host in the plurality of flash memory devices in response to a write command and to read the data stored in the plurality of flash memory devices in response to a read command,wherein the controller is further configured to maintain a multi-level address table that maps logical addresses received from the host identifying the data stored in the plurality of flash memory devices to physical addresses in the plurality of flash memory devices containing the data, andwherein a first level of the multi-level address table is maintained by the controller in the volatile memory and second and third levels of the multi-level address table are maintained by the controller in the plurality of flash memory devices.

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