  Yes, that could help. Since it is a driver based controller there is limited functionality inside the controller BIOS. OMSA would probably provide more information inside an operating system. You would need to use a USB drive or some other external medium since the S100 only supports 4 HDDs. Thanks
 I have 4x2TB drives in a Raid 5.  The below screenshot shows failure even though all 4 drives appear to be online.  I was able to run the system utility to run a short self test on each of the 4 drives and all passed.  They also passed the SMART test. I'm not sure why there is a non-RAID virtual drive since I don't have any additional drives.  And, when selected, there is no physical drive assigned to it. Does anyone know what might have happened and how to recover from this?  My system won't boot at this time.  It should be booting to a Windows Home Server 2011 (Windows 2008R2 equivalent) and there should be 2 partitions.  A small 60GB boot volume and a 5.4TB share volume. Thanks for any help on this.  I need to recover pictures from the share volume and may need to send to a data recovery service if I can not fix this myself.  Note: I tried to boot after removing disconnecting each drive individually it did nothing other than to show the disconnected drive missing from the physical drive list. Here is a link to view the screenshot in BIOS for RAID: [URL]   UPDATED screenshots of physical disks: Physical disk 0: [URL] Physical disk 1: [URL] Physical disk 2: [URL] Physical disk 3: [URL]
Raid5 Perc S100 in T110 Failed after power outage