I have installed Solaris 10 U6 on VMware VI3 ESX 3.5 U4. Both are fully patched and as up to date on drivers as possible. The server hardware is HP DL580 connected to the network with copper and 6 NICs or a HP Blade environment using the Flex 10 virtual connection. The core switch is a Cisco 6509. To my knowledge all firmware is either up to date or in full compliance with the VMware HCL.
The Solaris VM on very random occasions will drop SSH sessions and I can see it lose pings. It is very intermittent and the way it fails would almost look like hardware. A continuous ping can work for long periods of time then fail 5 times, continue on again and so on. This does not seem to have a specific pattern but causes a lot of performance issues and connectivity loss. I have VMotioned the VM between the DL580s and the Blades and I have the same problems. No matter where I put Solaris 10 in my VMware environment I have performance and connectivity issues. Windows and other servers in this environment are not affected. Has anyone seen this before? I hope you can help. Thanks!