--- On Mon, 30/3/09, Goswin von Brederlow <goswin-v-b@xxxxxx> wrote: > From: Goswin von Brederlow <goswin-v-b@xxxxxx> > Subject: Re: Adding more drives/saturating the bandwidth > To: Jon@xxxxxxxxxxxxxxx > Cc: linux-raid@xxxxxxxxxxxxxxx > Date: Monday, 30 March, 2009, 4:40 PM > Jon Hardcastle <jd_hardcastle@xxxxxxxxx> writes: > > > Hey guys, How do you know if your machine can handle > adding some more drives to it? How can you check that there > is enough BUS IO to handle extra sata cards and also that > the machine is powerful enough to support say an 8 drive > raid 5... > > A) Try & error. > B) look up the speed of the bus and half it. Any bandwidth > left? > make sure the cpu isn't at 100% already as well > > MfG > Goswin Cheers guys, I dont think CPU will be an issue as when i looked yesterday whilst copying to my 6 drive raid 5 array it was at ~10% (the only time i get access issues is when i am smart checking all 6 discs and trying to stream a movie of it at the same time!) As for try and error... sounds scary as once I have added a drive to the array I can undo the process! I suppose I could add them as JBOD's and then thrash the hell out of them.. whilst accessing the rest of the array... What does halving the bus speed tell me in anycase? ----------------------- N: Jon Hardcastle E: Jon@xxxxxxxxxxxxxxx '..Be fearful when others are greedy, and be greedy when others are fearful.' ----------------------- -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
