On Mon, 2003-02-10 at 13:02, Stephen Frazier wrote: > The STK ICEBERG has something they call RAID5+1. I am not sure exactly > how it works but they say that you can loose 3 drives before the CE > arrives to fix it and still not lose any data.
This implies that they are mirroring a pair of RAID5 arrays. If each of the RAID5 arrays contains 3 drives (the smallest RAID5 configuration) then it would be possible to lose all drives on one array and 1 on the other and still be running. The mirror would break after the second drive failed on any array but the system would still function on the other array.
