On Tue, 28 May 2002 at 11:09am, Bartho Saaiman wrote > I have a problem where my dumper is slow and the taper seems to be faster: > > > STATISTICS: > Total Full Daily > -------- -------- -------- > Estimate Time (hrs:min) 0:02 > Run Time (hrs:min) 11:21 > Dump Time (hrs:min) 9:42 9:42 0:00 > Output Size (meg) 14818.3 14818.3 0.0 > Original Size (meg) 20804.7 20804.7 0.0 > Avg Compressed Size (%) 71.2 71.2 -- > Filesystems Dumped 1 1 0 > Avg Dump Rate (k/s) 434.8 434.8 -- > > Tape Time (hrs:min) 1:37 1:37 0:00 > Tape Size (meg) 14818.4 14818.4 0.0 > Tape Used (%) 74.1 74.1 0.0 > Filesystems Taped 1 1 0 > Avg Tp Write Rate (k/s) 2606.1 2606.1 -- > > Is there a way of changing this to speedup backups.
The first thing to do, if at all possible, is to use a holding disk. Given that your run time=dump time+tape time, it appears you aren't using one. A holding disk big enough for your two largest partitions can *significantly* speed things up. Next you need to look at your clients, your network, etc. E.g. you're using software compression -- are you doing it on the clients? How fast are they? Is your network throughput with other apps good? This isn't an amanda problem per se (except for the holding disk), but one of looking at your resources. -- Joshua Baker-LePain Department of Biomedical Engineering Duke University
