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Apparatus and methods for scanning data in a cloud storage service

  • US 10,521,423 B2
  • Filed: 07/28/2015
  • Issued: 12/31/2019
  • Est. Priority Date: 12/22/2008
  • Status: Active Grant
First Claim
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1. A method for scanning objects stored in a cloud storage system, the scanning of the objects being for a purpose other than detecting a volume failure issue, comprising:

  • determining that at least one of the objects stored in the cloud storage system requires scanning;

    scanning each of the at least one object, wherein the scanning is performed using at least one scanning engine;

    tracking objects that have been scanned by;

    assigning a monotonically increasing sequence number to each object;

    setting a high watermark value, wherein the high watermark value is a highest sequence number that has been scanned, thereby the high watermark value determines in part if subsequent scanning for the at least one object is required; and

    storing the high watermark value;

    wherein, in the determining step, only objects having a sequence number higher than the stored high watermark are determined to require scanning; and

    synchronizing the at least one object with a plurality of devices connected to the cloud storage system based on the scanning results.

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