Link to home
Start Free TrialLog in
Avatar of pbgormley
pbgormleyFlag for United Kingdom of Great Britain and Northern Ireland

asked on

Backup plan : Disk Based then Tape - Help!

Hi, I'm relatively new to Backup Admin stuff so please bare with me.

We recently bought a little Buffalo TeraStation NAS (1.6TB) and my plan was to do a Full Backup to begin with then a Differential Disk Based Backup every night then at the end of the week, do a Backup of this to a Tape using a DELL PVT 122T (Off-site as part of our DR/BC plan), I'm using Veritas Backup Exec 9.1.
 
The first Full Backup worked so I set the Differential (Using Modified Time) Backups in motion but a daily differential backup is averaging at 50Gb (approximately 1Gb for Staff) which I know we aren't using in a day. Which is being added on to the backup if you like, At the rate I'm going my NAS will be maxed out in a few weeks & backup to tape is almost out of the question already (PVT Tapes are 160/320Gb)

My question is am I doing this all wrong, is differential the correct method ?

I'm almost 1 week into the process, will it level out, am i worrying to early ?

Thanks in advance
Paul.
ASKER CERTIFIED SOLUTION
Avatar of Lee W, MVP
Lee W, MVP
Flag of United States of America image

Link to home
membership
This solution is only available to members.
To access this solution, you must be a member of Experts Exchange.
Start Free Trial
Avatar of pbgormley

ASKER

I suppose 1 month would be suffice.

That looks like a really good article.
SOLUTION
Link to home
membership
This solution is only available to members.
To access this solution, you must be a member of Experts Exchange.
Start Free Trial
Avatar of dooleydog
dooleydog

Where i work, we use a backup to disk and then once a week to tape scenario. In addition, we keep two weeks of backups on disk.

IT works, because the data is more easily accessible for restoring, and archives for posterity.


Good Luck,

SOLUTION
Link to home
membership
This solution is only available to members.
To access this solution, you must be a member of Experts Exchange.
Start Free Trial
I don't see how "How long do you need to retain your backups?" can have any effect on the size of differentials. Could you explain what you did to solve the problem please.