rorycl schrieb: > > I'm going to cross-post this text on the Amanda and Bacula lists. > Apologies in advance if you see this twice. > > Our company is about to provide centralised backups for several pools of > backup data of between 1 and 15TB in size. Each pool changes daily but > backups to tape will only occur once a month for each pool. > > The backup tape format is to be LT04 and we have a second-hand Dell > PowerVault 124T 16 tape autoloader to work with currently. Backup from a > pool may be taken off a Linux LVM (or hopefully soon a BTRFS) snapshot > ensuring that the source data does not change during the backup process. > We have the possibility of pre-preparing backup or compressed images if > this is advisable. > > An important aspect of the system is that the tapes should be readable > for 12 years, by other parties if necessary. From this point of view we > like the idea of providing a CD with each tape set of the software > needed to extract the contents, together with a listing of the enclosed > files in a UTF8 text file. We will be required to audit each backup set > by successfully extracting files from tape. > ...
If you want to keep the data 12 years, you may have to copy these LTO-4 tapes to a next generation LTO-X media during that time. The durability of LTO-4 tapes is up to 30 years - in theory. So beside bacula you have to find a place where you can keep the tapes under the right conditions (temperatur, humidity...). I just had a bunch of 40 LTO-4 tapes that had problems during backups (or worse - only during the verify job afterwards). All from the same production date. So my trust in tapes is not that good anymore... Ralf ------------------------------------------------------------------------------ Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july _______________________________________________ Bacula-users mailing list Bacula-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bacula-users
