Hi
In just a very few words:
- 2 yrs ago FAS3020 was installed
- design was made by 3rd party
- demand has grown
- environment has grown from 2 heads with 2 shelfs to 6 shelfs (metro cluster)
- design has never been reviewed
and now... we have performance issues. Copying a VM from one LUN to another LUN (ESX) spikes filer cpu to 99% and latency on ESX side goes up to 200ms
Unfortunately I don't know anything about designing volumes, plexes, LUNs etc. so I'm now looking for some docs on general design rules.
I have questions like:
- how many shelfs and disks can you just "stick" together in one big volume?
- Everything is configured as Raid-DP. Is Raid-DP even the best for Oracle? On other storage I would use Raid-10 and Raid-5 for that.
- In the volume I can see a mix of 10k and 15k disks and 144GB and 300GB disks. Normally I would avoid that, can NetApp handle that? I know the WAFL system is good, but ....
Anyway... links to good docs on these topics are very welcome.
Gabrie van Zanten
http://www.GabesVirtualWorld.com