Hi Ana, thanks for your reply. > The most recent tape drives technology are LTO-6. The LTO-6 tapes > have a native capacity of 2.5 TB and up to 6.25 TB of compressed data. > Unfortunately it is really difficult to reach such amount of data in a > tape. Maybe a 1.5:1 compression rate depending on your data.
Compression rate will be not good here, as most of the data is image and video data, usually already well compressed. > So you will need more than one tape for a full backup and this will > need > manual intervention for changing tapes. Yes, I know, as long as this is supported (and as far as I can see it is) by Bracula that's fin. I remember it was difficult using Amanda in 1996 or so. > If this is not a problem for you Bacula and an LTO drive is a > feasible solution. Otherwise you should probably think about a tape > library for this work. Yes, a library would be good, but I cant afford one now. Maybe I could get a old used library and replace the drive by a new one... > Yes, You can have full/differential/incremental backups in a > hard disk and then write once a week to tape. This is commonly > known as disk-to-disk-to-tape (D2D2T) backups. OK, in this case how much hard drive storage would I need? Enough to hold the full backup ore just a few TB for the weekly incremental backups? > What do you mean about "slow Network"? Could you be more specific? 100Mb/s and not the best topology, a few PC via VPN through 100 MBit/s LAN > Are your data go across wan links? There are lots of known cases > with Bacula working across wan links with no problems. No WAN, I just wondered if I need to ensure a minimum data throughout for the LTO. I member some problems in this respect with the DDS drive. See you Flo ------------------------------------------------------------------------------ One dashboard for servers and applications across Physical-Virtual-Cloud Widest out-of-the-box monitoring support with 50+ applications Performance metrics, stats and reports that give you Actionable Insights Deep dive visibility with transaction tracing using APM Insight. http://ad.doubleclick.net/ddm/clk/290420510;117567292;y _______________________________________________ Bacula-users mailing list Bacula-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bacula-users
