Hello Gemini, Does it only do it when set up as raid? You may have a stripe problem, or controller. Can you back up the data, and use your old controller without raid to see if it's a HDD problem. Thats my guess..... Thanx, Scott Beebe Ohm Electronics Inc. 609 W. Clinton St. Ithaca NY 14850 Voice: (607) 273-8406 Fax: (607) 273-8743 WWW.OhmElectronicsInc.com mailto:Scott@xxxxxxxxxxxxxxxxxxxxx Thursday, September 23, 2004, 7:35:24 AM, you wrote: Gemini> On this computer, I previously had three Seagate 15000 RPM SCSI hard drives Gemini> (ST336752LW, ST336752LC, and ST318452LW) which all worked fine independently Gemini> (or NOT as RAID 0) with an Adaptec 29160 SCSI Gemini> controller card. I then later Gemini> bought an Elite 1600 Megaraid SCSI controller card so I could to attempt a Gemini> RAID 0 SCSI array for performance which was Gemini> successful for quite some time. Gemini> Then it began random intermittent system reboots. I was finally able to Gemini> realize this was happening only when the SCSI RAID array was active as it Gemini> will never happen in any other configuration. I suspect the Elite 1600 Gemini> controller is the problem and I do not have another one to replace it with Gemini> for the substitution method. I may even choose to replace it with an Adaptec Gemini> SCSI RAID controller instead but since they are so expensive, I thought I Gemini> might throw it out here first to see what anyone else may have to say. Gemini> Bob Waterman, CET® #RI-28 Gemini> Master Technician License #9109 Gemini> Service Manager / Parts Manager Gemini> Gemini Computer, TV, & Security Alarms Gemini> (508)695-7302 Gemini> (508)695-7769 FAX Gemini> geminitv@xxxxxxxxxxx Gemini> ----------------------------------------------------------------------------- Gemini> Lost Password: Gemini> http://www.tech-assist.org and select "Login Problems?". Gemini> Email Archives: Gemini> //www.freelists.org/archives/techassist/ ----------------------------------------------------------------------------- Lost Password: http://www.tech-assist.org and select "Login Problems?". Email Archives: //www.freelists.org/archives/techassist/