RSYNC Fedora (Moving onto RAID...)
scott at mirrabooka.com
Wed Nov 26 02:09:05 UTC 2003
William Hooper wrote:
>Of course if both disks of a mirror set die you lose everything, too.
The guy was recommending RAID10 ( a bunch of RAID1 pairs then add them
all together as RAID0 ).
After reading it I worked out a number comparing a RAID5 with 5 disks
against RAID10 with 4 stripped sets of 3 disks (12 in total ). If you
lose 2/5 RAID5 disks you are all lost. If you lose 5/12 RAID10s you
still have over a 95% chance of no data lost. I believe recovery time
on RAID10 puts RAID5 to shame too. His entire rant can be found at
( search comp.databases.informix for quarterly raid 5 rant)
I've only experimented with RAID myself so most of my curiosity is about
what people who have suffered a catastrophic data loss chose, and if
they intend to do anything different in future...
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