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Concurrent maintenance for PCI based DASD subsystem with concurrent maintenance message being communicated between SPCN (system power control network) and I/O adapter using PCI bridge

  • US 6,199,130 B1
  • Filed: 06/04/1998
  • Issued: 03/06/2001
  • Est. Priority Date: 06/04/1998
  • Status: Expired due to Fees
First Claim
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1. In an electrical system having a system power controller and at least one system component coupled to the electrical system by a first communications path having a input/output adapter thereon, a method comprising:

  • enabling concurrent maintenance of the at least one system component by exchanging concurrent maintenance message signals between the input/output adapter and the system power controller over a second communications path different from the first communications path, so that the system power controller thereby controls power to the system component subject to concurrent maintenance.

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