FY2K System Availability Statistics

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.

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FY2K Mainframe Monthly Availability Percentages
	Oct	Nov	Dec	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep
J90/SV1s
Killeen	99.17	100	99.76	97.44	98.04	96.41	99.56	99.98	100	99.96	100	98.80
Bhaskara	100	100	99.61	100	98.82	96.36	99.18	99.89	99.56	99.51	98.96	98.75
Franklin	98.88	99.79	97.77	100	98.82	96.16	99.84	100	99.97	99.68	100	98.74
Seymour	99.82	99.06	99.77	97.92	98.78	96.13	99.19	99.66	98.94	99.73	100	98.75
T3E
Mcurie	98.53	96.61	98.42	96.16	95.46	95.30	98.87	97.52	99.30	98.59	93.49	96.35
IBM SP
GSeaborg						98.86	99.11	99.81	98.62	91.85	100	97.68

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FY2K Auxiliary System Monthly Availability Percentages
	Oct	Nov	Dec	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep
File System
AFS	100	96.08	100	100	98.91	100	100	100	98.47	100	99.07	100
File Storage Systems
HPSS	98.58	97.42	99.53	99.76	96.75	95.40	97.64	97.65	99.02	99.48	99.41	99.50
Archive	98.18	99.28	99.23	98.44	94.15	98.15	97.76	98.76	99.56	98.75	98.58	98.72
Math/Visualization Systems
Newton	99.71	99.78	98.43	99.73	99.02	94.34	99.63	99.56	100	99.75	99.64	100
Escher	97.64	99.48	99.69	100	99.19	96.24	99.58	99.49	99.93	100	99.58	99.48

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