ESX4 losing Disk Connectivity to FC Volume

[gharding]

We have changed the Fibre Channel Volume to WT when assigning it to a FC Group in DSS, that has stop the disconnect errors in vmware but has shown a perfromance decrease but we think that is down to the raid card that we will be replacing. Fingers crossed. Let me know how you get on if you try this.

Thanks Gavin

[gharding]

Well I think it is finally resolved, we swapped the HP and Dell raid card with an LSI Megaraid 9620-8i and set the settings as per open-e performance document for LSI and even with WT unchecked on the Volume we are getting no errors and very good performance.

[gharding]

Unfortunatley we are still experiencing the problems, wider if we need to upgrade to 8GB fibre, anyone else had this issue

[gharding]

I have found this article and it seems that there may be an issue with vmware ESX4 and storage servers not just open-e. http://communities.vmware.com/thread/228916