Perry Whittle (1/12/2012)
@steve-2 Jones that is, unfortunately a disadvantage of the RAID5. Array rebuild times for R5 and R10 are also a consideration, with lower rebuild times R10 is often the favourite.
That's why you need a spare in the rack.
And if you do that, why not go with R10 then and slightly bigger drives? I've gambled on R5 in the past, but with today's capacities of drives, not sure I would anymore.
Side note: we started with R5 here in 2001, but when we purchased larger servers in 2005, we just went with multiple R1 arrays for protection since we were putting a spare drive in a 6 slot server, we just did 3 R1 arrays.