Am Tue, 11 May 2010 03:47:05 -0700 schrieb martinofmoscow: > Hi, we've come over from an Amanda backup system which had become a > nightmare to administer, and generally we're very happy with Bacula. > > My concern thought is speed: Bacula is proving to be very slow, possibly > in relation - it seems - to its network utilisation. We're backing up > over a managed 100Mbps LAN, so not lightning-fast, but ought to be ok > for 400Gb overnight full weekly backup and typically 5Gb nightly > differential. Although the methodology of Bacula and Amanda are > different, I'm fairly certain Amanda was much, much faster at backing up > over a network than could deal with this quite well. I kicked off a > [400Gb, full] bacup at 1am on Saturday and it completed 11 hours later > at mid-day. > > Interestingly, I just noticed that the Bacula dir was able to reel off a > backup of the fd on localhost of about 750Mb in under 10 seconds, which > is why I'm looking towards the way Bacula uses the network as the > possible source of the problem. Conversely, a differential of 6Mb from a > client on the local LAN just took a few minutes to complete. > > Another possibility is spooling. I've set up a spool directory on the > director/sd but have never seen it used. Relatedly, the tape drive > during backups is very stop/start, with a lot of pauses. > > We're using an HP StorageWorks Ultrium 960 with LTO-3 tapes. The dir/sd > is a PowerEdge running Ubuntu 8.04 LTS and the supported Bacula 2.2.8. > The clients are running Ubuntu LTS and Redhat EL5 across a 100Mbps LAN. > I am not using TLS encryption for these servers, although I will be > using it soon for backing up two more servers across the internet. >
did you read: http://www.bacula.org/en/dev-manual/Data_Spooling.html and did you enable the SpoolData in the Job definition? the tape is likely faster than 100mbps resulting in starting/stoping alot (== slow) if data-spooling is not configured correctly. ------------------------------------------------------------------------------ _______________________________________________ Bacula-users mailing list Bacula-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bacula-users