On Sat, May 25, 2002 at 12:45:12PM -0700, Fred Moyer wrote: > Performance (fastest->slowest) > hardware raid -> software raid > raid 0 -> 10 -> 1 -> 5 > Redundancy (most -> least) > hardware raid -> software raid > 10, 1 -> 5 -> 0
It's really not possible to compare RAID-levels independent from what the system is beeing used for. E.g. lots of seeks vs continous access, read-intensive vs write-intensive, how many simultanious accesses and so on. E.g. RAID 1 / 10 can easily be as fast, or faster than RAID 0 for read intensive work. RAID 5 has a very high penality when doing small writes, but the effect can be reduced by good RAID-controllers with lots of battery-backed cached. For a typical database-application I would agree with your statement except that RAID 1 is probably faster than RAID 10. -- Ragnar Kjorstad Big Storage ---------------------------(end of broadcast)--------------------------- TIP 1: subscribe and unsubscribe commands go to [EMAIL PROTECTED]
