HP High Availability Disk Array 10/20 User Manual - A3661-90001 - Page 246
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Note It is important to be aware of the distinction between the occurrence of a failure and the reporting of that failure. A disk array component failure is reported immediately to the disk array. The disk array, in turn, notifies the system of this event when the next I/O is attempted to any disk array component. It is important to recognize the following: • The next I/O may or may not occur soon after the failure occurs. • The component on which the I/O is being attempted at that time may or may not be the failing component. • In a multi-host configuration, the system attempting the next I/O may or may not be the system that was using the disk array before or during the failure. Note Always check that the FAULT, REPLACE, or SERVICE LED on a suspected failing module is lit before removing it. 5-74 High Availability Array Monitor (HARAYMON)
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