Availability percentages are calculated using gross wall clock time. Outages/periods of unavailability (downtime) are subtracted from the total wall clock hours (accrued from beginning of FY99 or instantiation of the system) and presented as the percentage of the time the system was available to the users. The downtimes are scheduled and unscheduled periods of non-availability grouped into the following three categories: Hardware (H/W), Software (S/W), and Other (Oth). The Oth category includes unavailable time caused by power outages, environmental conditions and planned power-downs for equipment relocations or computer room modifications, etc.
To view a summary
of number of downtimes and cumulative hours, go to the Overall
Systems Availability Details.
[an error occurred while processing this directive]
[an error occurred while processing this directive]
