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METHOD AND APPARATUS FOR BACKUP AND RECOVERY USING STORAGE BASED JOURNALING

  • US 20100274985A1
  • Filed: 07/12/2010
  • Published: 10/28/2010
  • Est. Priority Date: 06/26/2003
  • Status: Active Grant
First Claim
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1. A storage system coupled to a host computer via a network comprising:

  • a data volume storing write data from the host computer;

    a snapshot storing area storing a plurality of snapshots;

    a journal storing area storing journal entries including a journal entry between the first point in time and the second point in time; and

    a storage controller to conduct write operations according to write requests received from the host computer, to manage snapshot operations to store a plurality of snapshots including the first snapshot and the second snapshot, and to perform data recovery with a target time using said journal entries and a selected snapshot among said plurality of snapshots,wherein the storage system manages journal operations to record the journal entries, and to apply at least one of the journal entries to one of said plurality of snapshots.

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