Many thanks for your response.
The drives are certified by Dell SATA 6gb/s drives, they do not even show up on the PERC 5/I controller, however I put in an old MacBook SATA 3gb/s drive and it was recognized without any problems.
This leads me to think that the 6gb/s SATA drives are not compatible/supported on the PERC 5/I hence the reason for asking about the PERC 6/I
If the PERC 6/I will work in the PE 1950 version then I am hoping that the drives I have will be supported.
The server is running the latest BIOS and the latest firmware on the PERC 5/I