System Availability Details
FY01 - October 2000 Through September 2001
  Scheduled
Outages % Avail
Unscheduled
Outages % Avail
Overall
Avail %
% of Sched
Avail
MTBI* MTTR**
System H/W S/W H/W S/W Oth     Hours Hours
Vector 99.50 99.85 99.70 99.81 97.71 96.57 97.21 281 9.0
Parallel (T3E/SP) 99.83 99.64 99.16 99.35 99.03 96.97 97.49 241 7.9
Storage 99.90 99.36 99.89 99.73 9860 97.45 98.21 170 4.2
File Servers 100 100 100 100 100 99.97 99.97 8760 2.0
Math/Vis 99.92 99.73 99.73 100 99.02 98.37 98.71 296 4.03

*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


Cumulative Downtime Hours & Occurrences
FY01 - October 2000 Through September 2001
  Scheduled
Downtimes
Unscheduled
Downtimes
Total
Downtime
Total Avail
Hours
Number of
Outages
System H/W S/W H/W S/W Oth     H/W S/W Oth
Vector 143:08 44:28 85:28 54:22 658:20 985:46 28752 59 39 5
Parallel (T3E/SP) 31:00 64:49 150:04 116:02 173:31 535:26 17856 35 38 1
Storage 23:13 112:07 18:53 46:35 245:10 445:58 17520 15 86 2
File Servers 0:00 0:00 0:00 2:50 0:00 2:50 8760 0 1 0
Math/Vis 13:10 47:10 47:16 6:13 171:23 285:12 17520 28 29 2