HP 3PAR Solutions Software for vSphere - Manual (Page 29)

4.3 Installation Error Messages
3PAR VAAI Plug-in 1.1.0 for VMware vSphere 4.1 Users Guide
MESSAGE
3parvaai:ERR vmw_vaaip_t10 has already been loaded. Please unload the
module and reboot ESX host before you install 3PAR VAAI Plug-in package
DESCRIPTION
The VMware default vmw_vaaip_t10 module has previously been loaded and attached to 3PAR
devices and is causing a conflict with the current installation.
SUGGESTED ACTION
Unload the vmw_vaaip_t10 module from the ESX/ESXi host, reboot the ESX/ESXi host, then
install 3PAR VAAI Plug-in 1.1.0 for VMware vSphere 4.1 again.