ESXi on ProLiant ML350 G6 Disk Latency

[Tularis]

Hello,

We Deployed an HP ML350 G6 Server with ESXi 5.1.0 799733 and a P410i Raid Controller.

The media I used was the Official Media from VMware and not a "Customised" HP Image.

Since this server has been in Production we have noticed lots and lots of;

"Performance has deteriorated. I/O latency increased from average value of 13351 ms to 274421 ms."

This is also coupled with when the server is under heavy disk load (Backup etc..) it becomes un-responsive.

We didn't realised that we needed a Specific HP ESXi Installation Disk. So after some research it seems ESXi Drivers are VIM files.

So my questions where can I find the VIMs for the server?

Is is Safe to load in VIMs after the ESXi server has been installed?

or will we have to reinstall the hypervisor with the Official HP ESXi Media?

P.S. This thread has been moved from Servers > General to to ProLiant Servers (ML,DL,SL) - HP Forums Moderator