MagicITX wrote:
<snippage>
While the number of drives in a RAID 5 array is theoreticallyWhile still not perfect, this is why you would want a hot-standby drive in a RAID 5 setup. You will only be running in degraded mode for as long as it takes the system to rebuild the array on the hot-standby, not for as long as it takes for one to a) buy and install a new drive, or b) install a spare that was sitting on a shelf. Granted this still doesn't help if you lose two drives at the same time or lose a second drive while the system is rebuilding the array. Also RAID 10 can also lose all data in the entire array if two drives in the *same mirror* fail. Granted I am just picking nits here :-) :-) RAID 5 is more prone to the two drive failure problem as it can be *any* two drives in the array.
unlimited, some recommend no more than 14 drives. The problem is RAID
5 is hosed if two drives fail. The more drives you have the more
statistically likely you are to suffer a two drive failure.
Good article though. For me it is just TV. My video storage is on RAID 0. If a drive fails and I lose all my shows, I'll be sad, but life goes on ;-)
In case anyone is interested: http://en.wikipedia.org/wiki/Redundant_array_of_independent_disks
-- David
HDTV frontend I'm working on (picture of back, mythmon source) http://mythhd.info
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