On Monday 11 September 2006 17:32, you wrote: > On 2006-09-11 16:27, Dominik Schips wrote: > > Hello, > > > > I am new to AMANDA but I like it very much but I didn't get a good answer > > from all the documentation I read already and hope to get answers from > > the mailing list now. > > > > I use a Overland PowerLoader with a Ultrium LTO (400GB tape) device which > > change the tapes automatically. > > > > The clients push all the backup data via rsync (or other tools) to the > > server and I had to do a full backup every day of this directories the > > files are stored in. No incremental backup is allowed. > > Don't ask. I know this isn't the best to backup with AMANDA but I had to > > do it in this way. > > For the dumpes I use a holding disk before the dumpes are written to > > tape. > > > > The problem I have is that the last dump is to big (145GB) and doesn't > > fit on the first tape. So it is no problem. The PowerLoader take the next > > tape and everything is fine. > > > > But the entire backup take about 12-14 hours for all data (see statistics > > at the bottom). That is a little bit too much and I like to speed up the > > configuration. > > > > I have 2 questions: > > > > 1. How can I tell AMANDA to start with the big directories first and then > > the small directories? > > As I have seen AMANDA allways starts with the smallest and then the next > > biggest and so on. > > http://wiki.zmanda.com/index.php/Filling_a_tape_to_100%25
This looks great. Thank you. > > 2. I use a holding disk for the configuration. But AMANDA always do only > > one dump at the same time. > > How can I tell AMANDA to dump more directories at the same time to the > > holding disk so that the LTO device can backup the data faster and don't > > have to wait for the dumps of the holding disk? > > You are looking for the "maxdumps" parameter for the dumptype. I'll have a look at this. And I have to say that the AMANDA mailing list ist the fastest and best I ever have seen. :) > > It is a problem when the dumps are bigger then about 20GB because the LTO > > drive had to wait for the next dump until it is written to the holding > > disk. The result is the very high run time of AMANDA I think. > > > > Are the "maxdumps" and "inparallel" options at the amanda.conf the way to > > get several dumpes written at once to the holding disk? > > Yes. > > > Remember the files to back up are on the server already. > > > > I dont' have access to the config files today but let me know if you need > > them to answer my questions. > > For your information the LTO device use hardware compression. Is it > > better to disable hardware compression to speed up the run time? > > > > Here are some statistics: > > > > STATISTICS: > > Total Full Daily > > -------- -------- -------- > > Estimate Time (hrs:min) 0:40 > > Run Time (hrs:min) 13:08 > > Dump Time (hrs:min) 8:27 8:27 0:00 > > Output Size (meg) 374733.9 374733.9 0.0 > > Original Size (meg) 374733.9 374733.9 0.0 > > Avg Compressed Size (%) -- -- -- > > Filesystems Dumped 12 12 0 > > Avg Dump Rate (k/s) 12613.8 12613.8 -- > > > > Tape Time (hrs:min) 3:35 3:35 0:00 > > Tape Size (meg) 374733.9 374733.9 0.0 > > Tape Used (%) 194.1 194.1 0.0 > > Filesystems Taped 12 12 0 > > Avg Tp Write Rate (k/s) 29707.6 29707.6 -- > > > > USAGE BY TAPE: > > Label Time Size % Nb > > Daily027 1:59 224033.5 116.1 11 > > Daily028 1:36 150700.4 78.1 1 > > > > > > Best regards > > > > Dominik
