LS-QVL busted, replaced, new unit does not find 3 out of 4 HDs

[leoviotti]

I have a LS-QVL since early 2012, and it had been working "fine" until May (once in a while it would freeze if I copied too many things at the same time, but I learned now to live with it and bought a more powerful one recently to replace the Buffalo...). I went on a trip, and once I came back home, 3 weeks later, the NAS was off. It would not turn back on. I looked for a replacement power suply, bought 2 or 3, nothing... brought it back to Buffalo, and they detected the actual NAS was busted.
A month later, I got a replacement unit, all brand new, and I'm just in the process of setting it up once again, but when I connect the original HDs (4x2Tb), despite the actual HDD LEDs being steady green, as in "working fine", the NAS interface says disks 2, 3, and 4 have not been found. Disk 1 is displayed correctly, but I do not have the option to remove it anyway.

Unit is using the latest 1.68 firmware. All the setting I had on it were preserved, shared folders, logins, etc... just not the *actual data*. What can I do? Is this RAID Array (3+1) in any way "usable" in a desktop, as a last recovery measure?

I was able to save most - but not all - info before May into my other NAS... very very annoyed though... :(

PS: I tried to post screen shots, but got a msg the Upload Folder is Full.