[CentOS] mdraid on top of mdraid

Emmanuel Noobadmin centos.admin at gmail.com
Mon Mar 21 21:10:32 UTC 2011

> Multipath should survive ONE switch failure and your storage should
> provide a fast raid implementation.

Am I correct to understand that multi-path will survive up to N-1
switch failure and not just one switch if I used more than two
switches? If so, then I can see that I wouldn't need raid on top of
Storage Node
-> Disk export as, and to 3
different physical switch?

>You'll have really poor performance if you raid over iscsi...
I was pondering over the need of RAID on top of multi-path but wasn't
sure if multi-path alone would be enough.

Would running LVM, for flexibility in expanding volume sizes, on top
of iSCSI be badly affected as well?

More information about the CentOS mailing list