Re: [BackupPC-users] Keeping a large number of backups? Any drawbacks?

Hi David,

My concern is your backup volume is a single point of failure. This is because you merge the two disk together like RAID 0. If any of your disk fail, your whole volume will be gone.

If you can, make it into RAID 1, so that you will get 3TB space together with peace in mind. You can lost any one of the disk, and you will still have your data.

Regarding how much to retain, I usually set my customer backuppc to 4,0,1,1 ; which is 4 copy weekly backup, none for bi-weekly, 1 copy every 4 week (1 month), and 1 copy every 8 week (2 month)

You can try to increase the count for 4 week, eg, from 1 increment until 12, which should cover every month until 1 year, and see how much data that your system could handle. Or, if you are daring enough, increase the weekly count from 1 increment until 52, which should cover every week for the whole year.

On Fri, Dec 6, 2013 at 1:30 AM, David Nelson <david.nelson01 AT gmail DOT com> wrote:

Hello,

I built a BackupPC server with good older hardware and installed two WD RED 3 TB drives and used LVM to make them one big ~6 TB volume for backupPC. The system boots from a separate disk BTW. I am backing up teacher and student files for a small school district. The total backup before pooling and compression is around 800GB. My pool size is around 1TB with a months worth of daily incremental and full backups on Fridays. I did not realize when I built the server how amazingly efficiently BackupPC stores the backups. I did not anticipate being able to keep so many backups!

Is there any reason not to just increase the full and incremental keep count to a something like the whole school year? Another though is to keep the fulls and incremental for maybe 3 months then let the incremental go and just keep the weekly fulls? So that's the question, if I have plenty of space is there any reason not to just keep a ton of backups?

Thank you!
David Nelson

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