Enter a percentage from 0 to 100.
| Period | Allowed downtime |
|---|---|
| per day | 1 min 26 s |
| per week | 10 min 5 s |
| per month (30 d) | 43 min 12 s |
| per quarter (91 d) | 2 h 11 min |
| per year (365 d) | 8 h 45 min |
At 99.9%, one 43-minute incident uses a full month’s budget.
How to read the number
- The budget is spent in confirmed windows. A quarter at 99.925% gross means 97 minutes of measured downtime across 131,040 minutes. The sample SLA report walks through that math.
- Boundaries decide the number. A window from the quorum confirmation to confirmed recovery is defensible, and a window rounded to minutes is not. That is why Perstat floors availability and keeps real boundaries.
- Announced maintenance should not spend the budget. Announced windows are excluded on their real boundaries and stay visible on the record.
Perstat monitors the target and keeps the record that shows whether you met it. Take the tour without signing up.