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Arrangements for managing metadata of an integrated logical unit including differing types of storage media

  • US 8,392,685 B2
  • Filed: 12/12/2011
  • Issued: 03/05/2013
  • Est. Priority Date: 09/13/2005
  • Status: Active Grant
First Claim
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1. A file system comprising:

  • a first type storage medium;

    a second type storage medium; and

    a processor providing a file system using a first area in the first type storage medium and a second area in the second type storage medium,wherein the processor is configured to manage the first and second type storage mediums to permit metadata to be stored in the first area but not to be stored in the second area, and wherein the processor is further configured to store a first file and first metadata of the first file in the first area, which is managed by the processor to permit storing metadata, to migrate the first file stored in the file system to the second area, which is managed by the processor not to permit storing metadata, without migrating the first metadata stored in the first area, and to change the first metadata stored in the first area to point to a location of the first file stored without the first metadata, in the second area.

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