File system datasource
SC size = (dataSourceSize * recoveryRangeInDays * 2) / 100 + 1 GB;
Replica size = (dataSourceSize * 3) / 2;
SQL DB
Replica size = dataSourceSize * (1 + LogChange) / (AlertThreshold - .05);
SC size = 2.5 * recoveryRangeInDays * LogChange * dataSourceSize + 1 GB
Exchange SG
replicasize = dataSourceSize * (1 + LogChange) / (AlertThreshold - .05);
SCSize = 4.0 * recoveryRangeInDays * LogChange * dataSourceSize + 1GB
where
Log change = 0.06
Alertthreshold = 0.9