This is the formula:ĭata = sum of processed VMs size (actually used, not provisioned)Ĭ = average compression/dedupe ratio (depends on too many factors, compression and dedupe can be very high, but we use 50% – worst case)į = number of full backups in retention policy (1, unless backup mode with periodic fulls is used) Before you can calculate these values you need to know the formula which Veeam uses to calculate the storage needs. You can use the Check Space button to verify if there is enough space to write the backup to disk:īut is it possible to get this values via Powershell. When you edit or create a new backup job in Veeam Backup and Replication. This post is about how to calculate the storage needs for the configured Veeam Backup Jobs.
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