"Which HDDs/SSDs/Optical Drives are connected to the Marvell SATA ports of your mainboard?"
Usually it is the DVD and a removable HD. I see no need for those Marvell RAID drivers. The Marvell post don't seem to accept any boot device which is no big deal.
I have to get the RAID disks working as they have all files on them. Should I delete the Marvell stuff and attempt to install the AMD RAID drivers in their place?

Yani

That's what I'm avoiding of course as I do graphics, web design and video editing and have a mountain of software installed. Software with multiple updates.

Yani

No way will it allow me to install the RAID AMD drivers in that way. I'll have to do a test install on a spare disk before I risk the SSD. I'll get back to you after that.

Yani

http://www.wikihow.com/Enable-RAID-or-AH...-Controllers%29
I'm going to try this solution.

Yani

I haven't fully resolved this yet but I'm reporting case what I do in the next few days has me disconnected.

I have AOMEI Partition Assistant Professional
I used that to move the OS from the SSD > another HD.
Changed the BIOS settings to the RAID set up.
Unplugged the SSD and booted to the HD.
Bingo this magic happened and finished the OS move with the correct drivers for the RAID hardware.

I hadn't got to the point of plugging in the RAID drives... urgent at it is after 3 months is lack urgency. ;)
It was all going fine then slowly 2 days later over 30 seconds everything started to fail and the disk disappeared. Haven't worked out what is going on there.
You might want to have a look at their tools.
http://www.disk-partition.com/

OK... I bought a new SSD reloaded win 10 on it with the raid system turned on.
1. All the drivers appear to be part of windows 10.
2. I've lost the basic information that says this is a RAID drive that is normally visible using drvcfg in the pre OS stage.
Since I haven't reformatted any disks I imagine the information is still there.

I did label all the cables so I knew which drive was plugged into which port on the MB. It's taken so long to get this sorted they labels fell off. Does the interface socket make a difference?
The only thing I can do that I can see is to reconfigure the disks as RAID with drvcfg (motherboard util)
It is critical I don't lose the data on the disks or make the situation worse.

What should I try next?

Yani

EDIT by Fernando: Unneeded blank lines removed (to save space and to improve the readability)

This could be useful. $50 is about 50c per program for me. :)

Todo PCTrans Pro 9.0
The easiest PC transfer software for Windows XP/Vista/ 7/8/8.1/10 & Server 2003/2008/2012, which helps users easily transfer data and application to new PC/OS. Secure and reliable, old PC remains intact, no harm to new PC.

http://www.easeus.com/pc-transfer-software/pctrans-pro.html

Well, somehow the set up of the clean windows install on the new SSD has 'corrupted' in the same manner as the original problem. In the process when I boot to the non RAID setting on the motherboard to the old SSD with the working install on I can't see the other SSD.

From the working install the AOMEI Partition Assistant can't see any disks. That's new.

It seemed like that point where it all went bottom up was when I slid in the 3GB back-up drive.

That's on the Marvell controller and that seems to be missing. If the story is going to be this long I'll post a photo.

First, what I can't explain...

1. Why on a requirement of 5 disks, 4x1TB 1x3TB, all New Seagate I've replaced or need to replace now 4 disks, 2x1TB and 2X3TB?

This is on both hardware devices.

It seems very unlucky or ???

2. What causes the issue where Windows 10 can't sort out its driver. I suspect the process is as follows...

a. a disk is added using the caddy drive
b. because of disk error or other issue Windows 10 enters repair mode
c. during the repair process windows removes the RAID driver and perhaps does some other boot relate 'adjustments' on the drive.

Next is I'm going to follow these instructions to attempt to confirm I have the drives in the right order.
http://www.r-studio.com/Data_Recovery_Download.shtml

Then as I see it I have no choice but to set the disks to RAID 5 using the bios shell and drvcfg.

Then I'm hoping at worst I can deal with the RAID as a simple drive using R Studio.

For interest this is how it is set up. The second SSD is the original that refuses to boot under RAID bios settings.