Calculate daily backup and replication data size

[mohd.omar]

Dear All,

I am looking to calculate the total transferred data size (in mega byte) for Veeam differential replication, daily incremental jobs,
so I just want to insure about that to allocate enough disk space required for a new project
for example :
I have checked and reviewed Synthetic Full backup job (which is occur once a week) and the results is as follows:
Data ,
Processed 853 GB (100%)
Read 42.3 GB
Transferred 8.0 GB (5.3x)

I just want to know which part is the total data transferred and reserved for the backup server, as I understood it's a full backup but why only 8.0 GB data transferred while the actual size is 853 GB ?

here is the summary report for the incremental backup as well (which is running 6 times a week):

Processed 850.5 GB (100%)
Read 45.6 GB
Transferred 9.2 GB (4.9x)

I didn't find a huge difference, between full and Incremental so can any one please explain what are these number refer to ? and how to calculate daily incremental data transfer.

any reply or help is highly appreciated
B regards

[Shestakov]

Hello Mohd,
Synthetic full backup first copies the latest changed data blocks, which are 8GB in your case and then merges the increments into a new full backup file. Check the full backup size in your file system, it should be much more than 8GB.
For the further calculations you can use this handy tool: restore point simulator.
Thanks!

[mohd.omar]

Hi Shestakov,
thanks for the reply, it's really very useful details for me
for replication job, do I need also to check the data on the disk physically?
for 3TB storage without OS data size how replication job will run on hyperv environment, because I only saw vmware replica calculation avilable there is no option for hyper-v

regards
Mohd

[Shestakov]

Yes, vSphere Client is another option. VBR shows job statistics rather virtual infrastructure details.
If you have Veeam ONE, I would suggest checking there.