When you create a new Protection Group using the “Create Protection Group” wizard, DPM internally computes and allocates volumes for storing the replica and the shadow copies. This blog post enumerates the various formulae that we use internally to generate the default size.
File system datasource
SC size = (dataSourceSize * recoveryRangeInDays * 2) / 100 + 1 GB;
Replica size = (dataSourceSize * 3) / 2;
Replica size = dataSourceSize * (1 + LogChange) / (AlertThreshold - .05);
SC size = 2.5 * recoveryRangeInDays * LogChange * dataSourceSize + 1 GB
replicasize = dataSourceSize * (1 + LogChange) / (AlertThreshold - .05);
SCSize = 4.0 * recoveryRangeInDays * LogChange * dataSourceSize + 1GB
Log change = 0.06
Alertthreshold = 0.9
- Mukul Singh Shekawat
dataSourceSize is that in MB or GB, or even bytes?
Since we haven't seen anything to cover File, SQL, etc. like the Exchange Spreadsheet, I had to create one of my own... dataSourceSize is in GB. As an Example,
Data Size = 9.15 GB (or 9150 MB), Recovery Range = 5
Recov. Points=(9.15*5*2)/100+1=1.92 GB
This Seems to work for me, but hopefully we will be able to get our hands on a Excel SpreadSheet that inclused File, SQL, SharePoint, Etc. along with Exchange.