>-----Original Message----- >From: Les Mikesell [mailto:lesmikes...@gmail.com] >Sent: Wednesday, May 12, 2010 3:13 PM >To: sorin.s...@orgfarm.uu.se; General list for user discussion, questions and >support >Subject: Re: [BackupPC-users] [Solved] Slow web-GUI access > > >> What is a small number of drives? I have three identical 500GB Seagates of the >> SATA2 variety, all bought new late last year, so I'm assuming fairly modern as >> well. > >Something less than a dozen is a small number. With 3, every write is going to >require every disk head to seek and you'll wait until the slowest one completes >before the next operation.
We seem to be on different scales here. ;-) My biggest array is a six-disk Dell PE... >> The backup of the linux machines here, is for the most part hundreds of >> thousands of really small files, like in the 10-100kB-range. Could this be a >> reason for slowness? > >They would, but only if the heads are off seeking through them. If backups >aren't active, the web interface doesn't have to access that much and should >still be fairly fast. If you are competing with a running backup it would slow >down. So a small number of drives, having a nearly completely filled pool, huge backups that go well into the blackout-period (when I might want to check and possibly restore stuff) and plenty of small files all spells (more or less) slowness and potential disaster then? -- /Sorin
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