Availability percentages are calculated using gross wall clock time. Outages/periods of unavailability (downtime) are subtracted from the total wall clock hours 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, security related conditions, etc.
Click here to see:System Availability Details
| FY07 through SEPTEMBER | |||||||||||||||||||||||
| System Availability Details | |||||||||||||||||||||||
| Scheduled | Un-Scheduled | Other | Overall | Sched | *MTBI | **MTTR | ***MTBF | ||||||||||||||||
| System | H/W | S/W | H/W | S/W | Avail % | Avail % | (Hours) | (Hours) | (Day.Hour.Min) | ||||||||||||||
| Seaborg | 99.88% | 99.68% | 99.74% | 99.42% | 97.20% | 95.91% | 96.94% | 365 | 14.0 | 14 14:04 | |||||||||||||
| Bassi Parallel | 100.00% | 99.47% | 99.78% | 99.46% | 99.36% | 98.07% | 99.12% | 282 | 5.6 | 11 13:07 | |||||||||||||
| Regent/Archive | 100.00% | 99.14% | 99.98% | 99.88% | 99.38% | 98.38% | 99.24% | 143 | 2.2 | 5 21:18 | |||||||||||||
| Davinci | 99.95% | 99.30% | 99.97% | 99.93% | 99.31% | 98.46% | 99.21% | 312 | 4.57 | 12 20:02 | |||||||||||||
| Jacqaurd | 99.86% | 99.73% | 99.27% | 99.59% | 99.26% | 97.72% | 98.74% | 2325 | 63.08 | 16 05:05 | |||||||||||||
| NGF | 100.00% | 99.92% | 99.79% | 99.98% | 99.47% | 99.16% | 99.77% | 1460 | 46.37 | 29 07:42 | |||||||||||||
| PDSF | 100.00% | 99.73% | 99.94% | 99.78% | 99.31% | 98.75% | 99.62% | 973 | 12.67 | 9 01:10 | |||||||||||||
| N/A | (<1 yr) | ||||||||||||||||||||||
| Bassi | 100.00% | 99.47% | 99.78% | 99.46% | 99.36% | 98.07% | 99.12% | 282 | 5.6 | 11 13:07 | (1 yr<->2 yrs) | ||||||||||||
| Seaborg/Jacq | 99.87% | 99.70% | 99.51% | 99.51% | 98.23% | 96.82% | 97.84% | 630 | 27.4 | 15 09:35 | (>2 yrs) | ||||||||||||
| *Mean Time Between Interruptions = Total wall clock hours/total number of downtime periods | |||||||||||||||||||||||
| **Mean Time To Restoral = Total downtime hours/Total number of downtime periods | |||||||||||||||||||||||
| ***Mean Time Between Failure = Total wall clock hours - Total downtime hours/Total number of downtimes - 1 | |||||||||||||||||||||||
| FY07 through SEPTEMBER | |||||||||||||||||||||||
| Outage Hours & Number of Occurrences | |||||||||||||||||||||||
| Scheduled | Un-Scheduled | Other | Total | Total | # Outages | ||||||||||||||||||
| System | H/W | S/W | H/W | S/W | Downtime | Avail Hrs | H/W | S/W | Oth | ||||||||||||||
| Seaborg | 10:30 | 28:16 | 22:45 | 50:52 | 44:00 | 156:23 | 8760 | 6 | 16 | 2 | |||||||||||||
| Bassi | 0:00 | 46:07 | 19:34 | 47:31 | 44:00 | 157:12 | 8760 | 5 | 23 | 3 | |||||||||||||
| Regent/Archive | 0:00 | 151:27 | 3:56 | 20:57 | 90:38 | 266:58 | 17520 | 1 | 115 | 6 | |||||||||||||
| Davinci | 4:35 | 61:31 | 2:22 | 6:25 | 43:56 | 118:49 | 8760 | 4 | 21 | 3 | |||||||||||||
| Jacqaurd | 12:13 | 23:27 | 63:57 | 35:38 | 45:18 | 180:33 | 8760 | 6 | 12 | 4 | |||||||||||||
| NGF | 0:00 | 6:57 | 18:02 | 1:59 | 44:00 | 70:58 | 8760 | 2 | 3 | 1 | |||||||||||||
| PDSF | 0:00 | 23:55 | 5:30 | 19:35 | 44:00 | 93:00 | 8760 | 1 | 5 | 3 | |||||||||||||
| FY07 Monthly Scheduled Availability Averages | |||||||||||||||||||||||
| OCT | NOV | DEC | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | ||||||||||||
| Seaborg | 72.20% | 97.21% | 98.47% | 100.00% | 98.88% | 100.00% | 98.83% | 98.38% | 98.71% | 99.66% | 100% | 100% | |||||||||||
| Bassi | 98.74% | 97.47% | 99.42% | 100.00% | 99.05% | 98.20% | 99.69% | 99.53% | 97.98% | 100% | 99.34% | 100% | |||||||||||
| Regent | 99.99% | 99.75% | 100.00% | 99.81% | 100.00% | 99.97% | 99.94% | 99.88% | 99.25% | 99.81% | 99.86% | 99.97% | |||||||||||
| Archive | 99.95% | 99.29% | 100.00% | 99.83% | 100.00% | 99.89% | 99.42% | 99.99% | 99.75% | 99.93% | 100% | 99.90% | |||||||||||
| Davinci | 99.27% | 100.00% | 100.00% | 99.73% | 99.71% | 100.00% | 99.84% | 99.71% | 99.95% | 100% | 99.92% | 100% | |||||||||||
| Jacqaurd | 98.77% | 99.86% | 99.49% | 100.00% | 99.81% | 95.55% | 100.00% | 99.32% | 98.79% | 100% | 97.26% | 96.11% | |||||||||||
| NGF | 100.00% | 100.00% | 97.91% | 100.00% | 100.00% | 100.00% | 100.00% | 99.73% | 100% | 100% | 99.66% | 100% | |||||||||||
| PDSF | 98.84% | 100.00% | 100.00% | 97.82% | 100.00% | 100.00% | 100.00% | 100.00% | 100% | 99.52% | 99.25% | 100% | |||||||||||