From: Neil Brown <neilb@xxxxxxxxxxxxxxx> Date: Mon, Jun 14, 2004 at 09:45:21PM +1000 > On Monday June 14, thunder7@xxxxxxxxx wrote: > > I am trying to convince my boss our new database-server wants raid-0+1, > > not raid-5, and I got an idea while reading endless articles about > > raid-5 being slow when writing and management not listening. > > You want numbers, not abstract arguments. > > Configure your server with raid5 and do some performance measurements > - preferably with your database suite. > Then reconfigure with raid 0+1 and test again. > > Show the numbers to your boss. You get to choose which numbers to > show :-) yes - unfortunately, corporate IT gets to decide which hardware to test on. Guess what? They just got a shiny new SAN with 140 Gb disks, configured in raid-5. Not quite the raid-0+1 over 36 Gb disks I had in mind :-( Anyway, that was just an introduction - nu use regurgling that on the list. > I hope to release a "raid10" module for 2.6 within a couple of weeks. > raid10 is basically a combination of raid1 and raid0 all in one module > with some interesting geometry possibilities. This particular > geometry is one of the possibilities. > I'm looking forward to that! Kind regards, Jurriaan -- Anyone can build a fast processor. The trick is to build a fast system. Seymour Cray Debian (Unstable) GNU/Linux 2.6.7-rc2-mm2 2x6078 bogomips load 2.49 - 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
