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Using request and grant signals to read revision information from an adapter board that interfaces a disk drive

  • US 7,065,661 B2
  • Filed: 12/16/2002
  • Issued: 06/20/2006
  • Est. Priority Date: 12/16/2002
  • Status: Expired due to Term
First Claim
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1. A storage system having a disk drive, the storage system comprising:

  • a control board asserting a power down signal capable of causing power to the disk drive to be turned off; and

    an adapter board in an electrical communication path between the disk drive and the control board to receive the power down signal, the adapter board including a controller, the controller having memory for storing data and a power down input terminal that receives the power down signal, the asserted power down signal causing the controller to enter a read mode of operation so that data stored in the memory of the controller can be read, instead of causing power to the disk drive to be turned off.

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