Hi !
I run a series of benchmarks with IOZONE testing performance of
different RAID configurations on HP ProLiant DL380 + impact of NFS loopback.
NFS loopback is necessary even for very small systems (e.g. just 2
nodes), since oVirt local storage setup is limited to single (only one)
node per data center and this is quite useless from the point of view of
functionality.
Full article:
http://www.vacuum-tube.eu/wp/?p=537
Short YouTube slide show:
https://www.youtube.com/watch?v=Xw_VN9G8jSI
Related video:
Moving away from local storage setup to NFS/GlusterFS
https://www.youtube.com/watch?v=2ebhZ5U6x_Y