Ubiquityman said - Why don't you try it with the Intel SATA ports?
There are a few reasons why I'd like to continue with the Marvell SATA ports ....
1) reserves remaining two Intel SATA ports for future RAID storage expansion
2) does not utilise 8 port SATA feature already purchased ..... especially the red port that I thought would be most suitable for removable hard drive
3) unsure if I can run the Tandberg as a standalone (non-RAID) SATA drive (and it's hand removable!) on the Intel SATA ports and still manage to retain the 2 x 320GB Hard drives in RAID 0 on the them. Could I?
If 3) is a certainty, perhaps I'd give up on 1) and just let 2) just knaw away at me.