Question about back up times with NTBackup?

[Kyle]

Just a quick question about NTBAckup and timings. If i doa full back up of say, 80gb across the network to a NAS box and it takes say, 8 hours. If i then do differentiall back up how long would that take roughly?

[Geoff]

Depends how 'different' it is from the last full backup. :P

[Kyle]

lol

[ChrisH]

If you are backing upto NAS then you may benfit from using something like Robocopy to fairly static data between 2 places. I use it on my application shares.

[tarquel]

robocopy is what I use... let me go have a look at my differential log to see how long it took

*wanders off.....and comes back*

right... it really does depend on the equipment u have & how much data changes each day etc., but mine shows me that it took just over 2 hrs to copy 17.8G of data, which I guess isnt amazing but it is trawling through everything it finds - including stuff that access is denied on I guess.

Seems like people here do a lot of work lol - 17.8G changed in one day! not bad for a small school like this one lol

Regards
Nath.

[NetworkGeezer]

You haven't said how big your school is but imagine that overall there should a few gigabytes of modified and newly created files each day (including roaming profiles if you use them). You can get an idea of this by using the

DIR /S /AA

command to check for files with the archive attribute set.

I probably guess your looking at a couple of hours. Although not each file is backed up NTBackup still has to be find all those modified. This will take a bit of time. Plus any time need for automated backup verification.