Bacula-users

Re: [Bacula-users] backup volume size

2015-10-27 17:18:16
Subject: Re: [Bacula-users] backup volume size
From: John Lockard <jlockard AT umich DOT edu>
To: Thing <thing.thing AT gmail DOT com>
Date: Tue, 27 Oct 2015 17:16:43 -0400
Not sure if there is such a thing as "a standard bacula configuration", but as I said, the simple math says that if you only do 1 monthly full backup and you keep the last year's worth of full backups, you'll need 2.4TB of storage.  This completely ignores the retention of other backup levels.

On Tue, Oct 27, 2015 at 4:51 PM, Thing <thing.thing AT gmail DOT com> wrote:
Hi,

It is a standard bacula configuration, data will also not change much.  So from your estimate with compression a 3TB drive would seem the minimum.

On 28 October 2015 at 09:14, John Lockard <jlockard AT umich DOT edu> wrote:
How often are you backing up?  Fulls, Differentials, Incrementals?  How long do you want to keep each?  How compressible is your data?  How much does the data change?  How often does the data change?

Too many variables to answer your questions as given.

Only full backups, once a month, you'd need 200GB x 12 (ignoring compression) = 2.4TB


On Tue, Oct 27, 2015 at 4:08 PM, Thing <thing.thing AT gmail DOT com> wrote:
Hi,

To backup 200gb with 1 year retention roughly how big a disk would be required?  2tb? 3tb?



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--
-------------------------------------------------------------------
         John M. Lockard |  U of Michigan - School of Information
          Unix Sys Admin |      Suite 205 | 309 Maynard Street
      jlockard AT umich DOT edu |        Ann Arbor, MI  48104-2211
 www.umich.edu/~jlockard |     734-615-8776 | 734-763-9677 FAX
-------------------------------------------------------------------
- The University of Michigan will never ask you for your password -

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