Really? That would be cool if that's the problem. I was able to mount all the drive that's connected to the PCI card individually and do SMART test on them. All seems fine. My PSU is the following http://www.newegg.com/Product/Product.aspx?Item=N82E16817341018, OCZ ModXStream Pro 700W Modular High Performance.
According to this drawing
http://www.ocztechnology.com/res_old/manuals/psu/OCZMXSP500-700.pdf
of the cabling of that power supply, all the SATA and MOLEX connectors are on the 12V2 rail.
According to this drawing, it is a 25 Amp rail.
http://www.ocztechnology.com/images/awards/mxsp_wattage_charts.jpg
That same rail is shared by the PCIe power connectors (but odds are you are not using those connectors)
Even with all green drives, at 2 amps each, that's 28 amps, over the limit for the one 12V2 rail, and that is not counting the power draw for fans.
Since it seems you have a number of non-green drives, you are well over the limit of that supply. (figure on closer to 3 amps per non-green drive when spinning up) If, for example you have 7 non-green and 7-green that is still (7*3)+(7*2)= 35 Amps, plus a few more amps for the fans. You need 38 to 40 amps of capacity for the disks alone. It is why most multi-rail power supplies are not suitable for large arrays of disks.
Thanks for the info. Now I know why I am having intermittent share drive dropping and server going off line. Think I might have find my problem. Never occur to me the PSU spec Amp is more important than the Watts
So I went ahead and order the http://www.newegg.com/Product/Product.aspx?Item=N82E16817139006. Can I just add my old drives back and do a initconfig and rebuild the parity and be good to go with whatever data I have in those drives?
Thanks for your help.