Quote:
Originally Posted by luciferase75
RAID 1+0 will probably be best over 5. 5 will be more likely to create a parity error as you increase data storage size. 2 drives RAID 0 is less than 3 or 4 drives RAID 5 (parity regions count against).
|
?!?
Raid 0 and Raid 5 have same speed for the same usable drive size (2 drives in 0 vs 3 drives in 5). Raid 5 gains speed as you add drives (spindles).
Raid 1 gives no performance gain.
I have never had parity error on a Raid 5 (hardware raid) but I have had HD failures (and users failures) both in Raid 1 and Raid 5 setups. In all cases there was a performance loss while the new HD was populated but never so much that the users noticed.
But if you really want data integrity then you go for mirrored raid controlers, ie 2 or more raid controlers that write the same data to diffrent raid arrays.
My most complex setup had each controler on seperate PCI bus and the raid arrays were external each about 0,5 mile from the server and close to a mile from each other.
Yours
ZB