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Storage subsystem and method of executing commands by controller

  • US 20100023712A1
  • Filed: 09/12/2008
  • Published: 01/28/2010
  • Est. Priority Date: 07/23/2008
  • Status: Active Grant
First Claim
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1. A storage subsystem comprising:

  • a storage device having hard disk drives; and

    a controller for controlling the storage devices;

    wherein said controller has a channel adapter having a port for connecting at least one host computer via a network and a disk adapter for connecting the hard disk drives, the disk adapter acting to control access to a given storage region in the hard disk drives;

    wherein said channel adapter has a table of priority commands defining attributes of commands; and

    , wherein said channel processor receives plural commands from said at least one host computer via the port, extracts priority commands from the received commands according to the attributes defined in the table of priority commands, and. successively executes the priority commands in preference to non-priority commands.

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