HECToR Monthly Report, Phase 2B system, September 2010
Information on the utilisation, disk allocations, slowdowns and helpdesk statistics can be found in the associated SAFE monthly report.
Dates covered: 08:00 1 September 2010 to 08:00 1 October 2010
Number of hours: 744
1: Availability
Scheduled down time: 17 hours 06 minutes.
Incidents
The following incidents were recorded:
| Severity | Number |
| 1 | 6 |
| 2 | 4 |
| 3 | 17 |
| 4 | 0 |
Details of severity level 1 incidents
| ID | Date | Description | Length | Attribution |
| Incident-4511 | 14/09/2010 | OSS's re-mounted read-only makes lustre unusable | 09:12 | Cray |
| Incident-4536 | 19/09/2010 | PBS server failed | 08:04 | Cray |
| Incident-4561 | 20/09/2010 | Voltage fault caused system lockup needing reboot | 00:51 | Cray |
| Incident-4566 | 20/09/2010 | PBS server failed | 00:57 | Cray |
| Incident-4746 | 29/09/2010 | Lustre problems after 3.1 upgrade | 12:11 | Cray |
| Incident-4751 | 30/09/2010 | Lustre collapsed after start of service | 09:23 | Cray |
MTBF and Serviceability
| Attribution | Failures | MTBF | UDT | Serviceability |
| Cray | 6 | 122 | 40:38:00 | 94.2% |
| Site | 0 | ∞ | 00:00:00 | 100% |
| External | 0 | ∞ | 00:00:00 | 100% |
| Other | 0 | ∞ | 00:00:00 | 100% |
| Overall | 6 | 122 | 40:38:00 | 94.2% |
- Note 1: Serviceability%= 100*(WCT-SDT-UDT)/(WCT-SDT)
- Note 2: MTBF (Mean Time Between Failures) is defined as 732/Number of failures.
2: Performance Statistics
Technology Provision
| Description | Value |
| Technology reliability | 94.2% |
| Technology throughput | 8084 hours |
| Capability job completion rate | 100% |
| Technology MTBF | 122 |
Note: Technology throughput is calculated: 12*(732-UDT-SDT); 732 - annual average number of hours in a month
Note: MTBF is calculated as 732/number of failures
