i discovered that perc5 is a rebranded lsi 8480e.
I wen to their site downloaded the lates driver installed on esxi host.
~ # esxcli software vib list
Name Version Vendor Acc eptance Level Install Date
----------------------------- ------------------------------------ ------ --- ------------- ------------
lsiprovider 500.04.V0.34-0006 LSI VMw areAccepted 2013-02-28
but under storage adapter still shows as perc and still io problems. how do i know that the driver i installed correctly associated with perc5 card.
thanks