I’m looking for some information regarding host based striping of LUNs – specifically to improve performance.
I have a Raid 5 LUN that hold a database. I know that I have a latency issue on this LUN so i’m debating whether to split the LUN into two seperate Raid 5 LUNS then stipe these using host based techniques – effectively turning the LUNS into a Raid 5+0 stripe set. Does anyone have any experience in using such techniques? Also pro + cons.
Another option would be to create a Raid 1+0 LUN at the array level, I know this is more “expensive” but I would implement this is it offers better performance than the host based Raid 5+0 solution. Can anyone advise which is better? Database is Exchange on Windows 2k3e. Logs LUN report no bottleneck.
Any comments or feedback appreciated
Thanks in advance
The other possibility is