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System and method for locating a failed storage device in a data storage system

  • US 20030079156A1
  • Filed: 10/19/2001
  • Published: 04/24/2003
  • Est. Priority Date: 10/19/2001
  • Status: Active Grant
First Claim
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1. In a storage system having a plurality of storage devices communicatively connected by a ring-type communication network, a method of locating a failed device, comprising:

  • (a) disabling network access for all devices on the communication network;

    (b) iteratively performing the following steps until communication on the ring-type network is restored;

    (1) enabling network access for a subset of devices on the communication network, (2) testing communication on the communication network, and (3) if communication on the communication network fails, then disabling network access for the subset of devices; and

    (c) if communication on the communication network is restored, then enabling network access for individual devices on the communication network until the addition of a device causes the communication network to fail.

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