Tyler J. Wagner wrote:
> Raid5: Lose power during write operation = silent data corruption, which
> you'll find out about next time you try to rebuild.
depends on your disk array.  good hardware raid has a battery-backed 
write cache which will prevent such issues.  As long as the power comes 
back before your battery dies.

Les Mikesell wrote:
> The real problem is that there are parts of the disk that haven't been
> accessed for a while and the errors already exist on multiple drives
> before you notice them.   For software raid, I thought a cron job was
> supposed to be testing them periodically, but the notification may not
> reach you - and hardware raid may not to the tests.
Depends on your software RAID.  When I last checked, solaris did not 
automatically check your zfs raids.   FreeBSD 8.0 doesn't.

various folks said:

>  RAID10 performs better than RAID6.  Or vice versa.

depends on your use case.

broadly speaking, if you are doing large reads and writes, or doing 
mostly reads, raid5/6 will be faster.  for random i/o raid10 will be 
faster.
-- 
Dan Pritts, Sr. Systems Engineer
Internet2
office: +1-734-352-4953 | mobile: +1-734-834-7224

------------------------------------------------------------------------------
All the data continuously generated in your IT infrastructure contains a
definitive record of customers, application performance, security
threats, fraudulent activity and more. Splunk takes this data and makes
sense of it. Business sense. IT sense. Common sense.
http://p.sf.net/sfu/splunk-d2dcopy1
_______________________________________________
BackupPC-users mailing list
BackupPC-users AT lists.sourceforge DOT net
List:    https://lists.sourceforge.net/lists/listinfo/backuppc-users
Wiki:    http://backuppc.wiki.sourceforge.net
Project: http://backuppc.sourceforge.net/