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Tier Availability Calculator

Calculate expected uptime by tier level.

Enter the tier level (1-4) value for this calculation.
Length of time in the specified unit.
hours
Time measurement in years.

Results

Expected Availability:
Calculated expected availability based on your inputs.
-%
Annual Downtime:
Calculated time or duration.
-hours
Nines of Availability:
Calculated nines of availability based on your inputs.
-
Reference: TIA-942 Standards. Uptime Institute Tier standards.