Availability ***Needed Downtime (min/year)*** Downtime (hour/year)
99.00%.....................5,256 ........................................... 87.6
99.25%.....................3,942............................................ 65.7
99.50%.....................2,628............................................ 43.8
99.75%.....................1,314............................................ 21.9
99.90%.......................526.............................................. 8.76
99.99%........................53............................................... 0.88
99.999%.......................5................................................ 0.08
Downtime reasons:
Hardware and Software error: 49%
Human Error: 36%
Computer Virus: 7%
Software Corruption: 4%
Natural Disasters: 3%