20
February

What Does Total Source Capacity Mean?

Recently, when reviewing a report on a clients monthly backup statistics, an issue was highlighted with NetWorkers native licenses conformance output.

nlic

 

 

As we can see the output is not super informative. I have to admit, I was completely ignorant of exactly what Total Source Capacity meant? Now it seems self explanatory, but it took a few attempts from my SE of explaining before it sunk through the first few layers of my skull. I found this description from an EMC website that sums it up far better than I ever could.

“Data is measured as the largest aggregate full backup or synthetic full backup which is the combination of full backups plus incremental backups that are performed for all protected data by the NetWorker software over a two-month period (60 days). This is irrespective of where the data is backed up, for example, from tape, disk, VTL, Avamar ® Data Store, or Data Domain. The quantity of pre-deduplicated data is included in the calculation.”

So the measurement of total source capacity is not really directly tied to data moved or data stored, but rather the aggregate of the largest Full backup of all your protected clients over a 60 day period. My next challenge was how to determine this number? This particular client does use DPA, and I was getting ready to attempt to create a report that may pull out this information. Some googlefu found a recent question posted in the EMC community forum from a user looking for the exact same thing. After bumping some dude named Gareth came through with a deeply buried report template in DPA that would address this.

https://community.emc.com/message/866670?et=watches.email.thread#866670

 

The report is called “Estimated Protected Capacity”. You can find this report under Status / Backup in the report menu. Just set you time period for 60 days and viola!

tc

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