# Definitions

"Downtime" is calculated per SCM workspace on a monthly basis and is the total number of minutes during the month that the entire SCM cluster was unavailable. A minute is considered unavailable if all of your continuous attempts to establish a connection to the SCM cluster within the minute fail.

Downtime does not include partial minutes of unavailability or scheduled downtime for maintenance and upgrades.

"[Monthly Uptime Percentage](/products/syntphony-compliance-management/support-model/sla-subscriptions/system-availability.md)" is calculated per SCM cluster on a monthly basis and is calculated as:

*(total minutes in month – Downtime) / total minutes in month x 100*

Any SCM cluster deployed for only part of the month is assumed to be 100% available for the portion of the month that it is not deployed.


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