×

Architecture for parallel distributed table driven I/O mapping

  • US 7,269,631 B2
  • Filed: 06/01/2001
  • Issued: 09/11/2007
  • Est. Priority Date: 06/02/2000
  • Status: Active Grant
First Claim
Patent Images

1. A virtual storage system for linking a host to one or more storage devices over a network, the system comprising:

  • an agent connected to the host, the agent having volatile memory for storing a first copy of a table, the table having entries to map virtual disk positions, to locations on the storage devices; and

    a controller coupled to the agent, the controller having non-volatile memory for storing a second copy of the table, the controller intermittently causing contents of the first copy of the table to be replaced by contents of the second copy of the table,whereby during an input/output (I/O) operation, the host accesses one of the entries in the table stored on the agent to determine one of the storage device locations.

View all claims
  • 5 Assignments
Timeline View
Assignment View
    ×
    ×