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CONSISTENT DISTRIBUTED STORAGE COMMUNICATION PROTOCOL SEMANTICS IN A CLUSTERED STORAGE SYSTEM

  • US 20140281065A1
  • Filed: 05/28/2014
  • Published: 09/18/2014
  • Est. Priority Date: 09/23/2011
  • Status: Active Grant
First Claim
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1. A method comprising:

  • in a clustered storage system that has multiple storage server nodes, implementing a first logical sub-unit associated with at least a data storage object in a first storage server node;

    maintaining, for the first logical sub-unit, context information that is consistent with corresponding context information of a second logical sub-unit implemented in a second storage server node such that the first and second logical sub-units are part of a single distributed logical unit collectively made up by at least the first and second logical sub-units; and

    associating the first and second logical sub-units with a single host-visible identifier of the single distributed logical unit so that a host can access either the first or the second logical sub-unit of the single distributed logical unit, such that the first and second logical sub-units are not visible to the host as entities separate from the single distributed logical unit.

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