On Mon, Aug 27, 2007 at 10:31:17AM -0600, Cedar Myers wrote: > Neil Gunton wrote: >> I'm curious as to whether anyone has experience of software RAID in >> Linux giving better overall performance on RAID10 than a RAID card such >> as the Adaptec 2015S. >> >> Server: Dual Opteron 265, 1.8GHz, i.e. 4 cores total, 4GB RAM, 4x10k >> Fujitsu SCSI 73GB, Adaptec 2015S zero-channel RAID card. > > 1. When it comes to disk IO, especially with things like databases, the > disk vendors' information seems fairly solid that it's worth going with > 15k rpm disks. What I was reading about was a >10 disk system, so I yeah I think the idea is the faster the disc spin the more data that goes past the read head, thus the faster the data is taken off and provided tot he system > don't know if it applies to a 4 disk system. I know you're stuck with > what you have, but if you get a chance sometime to spec a system, keep > this in mind. > > 2. I my testing I got slightly better performance stacking Linux raid1 > and raid0 than just using the raid10 driver. I believe this was with > similar disks, but ten instead of four. > > -- > -Cedar > > > -- > To UNSUBSCRIBE, email to debian-amd64-REQUEST@lists.debian.org > with a subject of "unsubscribe". Trouble? Contact > listmaster@lists.debian.org > >
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