GA-P55-UD3 (rev. 1.0) Raid failure

[kysersoze]

Hey all,
         I'm having a weird issue ATM with changing from RAID 10 - RAID 5 everything was working fine with 4 1tb drives. I added an extra drive as a spare then changed my 4 drives RAID 10 - 4 Drives RAID 5 leaving the extra drive as spare after rebuild was complete I restarted the system as IRST said and on detection of the hard drives on post screen it paused on the 4th drive and sat there for ages. So I rebooted and same again. So I removed the 4th drive so the spare would pickup and it booted fine. Get into windows and plugged the 4th drive back in and it does not detect as part of the array. So fine i restore the disk to normal and run sea tools on the drive. System freezes and I had to reboot. Then the 5th Drive which was a rebuilding spare pause on the Drive Detection screen and the only way to get back to windows is to pull that drive as well. So I booted to windows and plugged that drive in as well as the 4th drive restart testing the 4th drive with Sea tools and the 5th drive drops back into the array and restarts to rebuild. The 4th drive tests up fine but the system refuses to boot with either drive in play.
Any ideas?
System specs:
Gigabyte P55-UD3 Rev 1.0 bios F7
Cpu Intel i7 860
4 x 2 GB (8 GB) Kingmax DDR3 1333
OS Drive SSD OCZ Agility 120GB firmware 1.5
Raid Drives Samsung Spin point 1tb x5
OS Win 7 Ultimate x64
Latest drivers from gigabyte site

[kysersoze]

I think i have resolved the issue myself. I have backed up all my data onto other drives. Run Diskpart /clean on all 4 drives in the array and resetup RAID 10. unit now boots to windows without having to pull the last drive from the array.

I guess its just another reminder that RAID 5 is not worth it.

[Dark Mantis]

Well, glad to hear that you have got it all sorted out. I must admit even though I run a RAID0 for the extra speed I am unsiure that I would go to the extra expense and trouble to use a larger scale RAID setup for home use.