Date: November 29, 1999
How does your system availability compare to industry averages? A Gartner Report from October 1998 lists the following availability data by platform:
| Platform | Outages/Server/Year | Availability |
|---|---|---|
| S390 (sysplexed) | 10 minutes | 99.998% |
| Tandem | 1.7 hours | 99.98% |
| AS/400 | 5.2 hours | 99.94% |
| S3900 (non-sysplexed) | 8.9 hours | 99.90% |
| VAX | 18.9 hours | 99.78% |
| Unix (all) | 23.6 hours | 99.73% |
| NT | 224.5 hours | 97.44% |
Download Original Gartner Report