slow performance of guest windows server on esxi 3.5.0 on hp ml350 g5

[aliom]

Hi,

I'm a first time user of the communities page. So all help is apreciated!

I have a HP ML350 G5 with windows guest servers. I am have poor disk and network performance issues across both server performing minor tasks such as file access.

Are there any known issues with this setup i need to be aware of?

Al

[TobiasKracht]

VmTools installed?

StarWind Software R&D

[DSTAVERT]

There are several possibilities.

performance

Network

I would do a search through these forums. Search box upper right.

[aliom]

vmware tools installed

it appears to be poor disk performance... any ideas?

[aliom]

at the moment i have 2 processors assigned to each virtual server which there are 2 of. Should i decrease these to 1 as stated in the performance link or increase to 4?

Thanks

[DSTAVERT]

If you don't have the BBWC module on your disk controller and don't have write back enabled in the controller you will have issues.

CPU issues. If you have a number of VMs on an ESXi host and you have enabled multiple processors you may have issues with processor scheduling. If you have a VM with 2 processors it will need to wait until there are 2 processors available. The more VMs you have with multiple processors and the more VMs you have on a given host the more opportunity there is for processors to be unavailable.

[aliom]

sorry i'm being lame.. but what is the BBWC mobule?

i'm running 32bit 2003 sbs and 2003 terminal server.

[DSTAVERT]

There is an option for drive controllers that adds a battery to power the cache module on the drive controller. By default write caching is disabled on controllers without a battery. Write cashing allows the controller to delay writing until there is a period of less / no other disk activity. It can and usually does greatly enhance performance. Without the battery if a server were to crash with unwritten data the drive can be badly corrupted.

[DSTAVERT]

How many processors and cores.