Bruno Prior ([EMAIL PROTECTED]) wrote on 14 June 1999 16:49:
>> I don't see an affordable solution to this. One can always use a
>> single controller, but with decent disks it'll be saturated. And
>> having a single disk per controller will run out of slots.
>
>For resilience to controller failure, theoretically:
>
>2 disks, 2 controllers, RAID-1 (50% of disk capacity)
>3 disks, 3 controllers, RAID-5 (67%)
>4 disks, 2 controllers, RAID-0 + RAID-1 (50%)
>6 disks, 2 controllers, RAID-0 + RAID-1 (50%)
>6 disks, 3 controllers, RAID-0 + RAID-5 (67%)
^^^^^^^ ^^^
Yes, that's what I call not so affordable :-(
Anyway, I found it interesting, though I think linux doesn't support
these modes, except RAID-0 + RAID-1. This setup is also interesting to
maximize speed while having redundancy. If only it were not so
expensive disk-wise...
