Software directed microcode state save for distributed storage c

Details Software directed microcode state save for distributed storage c Software directed microcode state save for distributed storage c

1995-09-18

1997-04-08

Beausoliel, Jr., Robert W.

3951851, 39518507, 39518211, G06F 1100

Patent

active

056196440

ABSTRACT:
A storage system improves error debugging by directing distributed system components associated with an error condition to temporarily suspend data processing for collecting failure information. The collected failure information is correlated for later analysis according to an issued diagnostic state save channel command word (CCW) that is triggered by the detection of said error condition. The storage system includes a host processor running applications generating record updates. A data mover in the host processor issues the diagnostic state save CCW upon receiving an error code from one of the system components. The failure information includes software, hardware and microcode control structures of the distributed system components.

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