Hey volks,

This is my first post, so, please do not judge me when i forget some basic stuff like logfiles, the reason is i have no idea which one are needed by the Community to support me.

I have the following setup:

2x 1TB (S-ATA) HDD in a 4GB DualCore Workstation
2x 1Gbit Interface (Bonded with balance-tlb)
3x ESXi 5 Hosts with 2x2GBit Interfaces (attached to the virtual machines, load-balanced)

I have created two volumegroups and assigned each the max on available Space (4GB Cache excluded)

I created NFS shares and mounted them to a ESXi 5 Machine without any problems.

The performance decrease drastically then more machines where added on the Share. Means: When i install one machine speed is (based on my feelings) ok, when i install a second one, speed is a bit slower, but ok, when i add the third machine, and a fifth one as example, the speed goes down and working with RDP is not possible with having no long wait times. When looking into the taskmanager the CPU/MEM is idle - so, not a performance problem on that side i think.

I'm new to NFS mounts, maybe i did a initial config error? Any suggestions how many virtual machines should run without problems with my configuration?

As i have tested a lot of configurations now i need your assistance on that...

Greetz,
Matthias

P.S. What are good ways to test the performance and find bottlenecks?