Hi guys
thought I'd start a little discussion on something that's been bugging us here at my company.
Setup:
File server with multiple disks. One in question is 8TB, with about 4TB used.
If we run a FULL FlashBackup-Windows, it'll backup the whole 8TB disk (half full half empty) and take the same time it'd normally take for 8TB of data anyways.
When running an incr-diff backup, it will take the deltas only (so around 30-80gb a day depending on the day) - how does it do that? What we're trying to accomplish without modifying anything on the file server itself is take the backed up files only, not the empty disk space.
What are we doing wrong?
File server = Windows 2008 R2 x64
Master NBU server = Windows 2008 R2 x64 - NBU 7.5.0.6
Policy = FlashBackup-Windows (although we've run tests on different disks using MS-Windows policy and it takes the full disk too)
Is it the type of disks we're using? We're using RDM disks for our file server and a VMDK for the test... same result.
Not sure if I'm super clear on this - btw this is just a discussion not something I'll raise with Symantec. Just trying to get an idea from the community...
Thanks