So here's the basic situation, I have a 6 disk RAID 0, power was interrupted, and a disk fell off the array and failed the array. The disk's RAID metadata simply got corrupted so that it no longer thought it was a part of the array. I attempted to re-add the drive, but although Intel RST could see the array on ICH10R, it did not provide me with the option to create drives or do any management tasks. I tried updating to 18.104.22.1682, rolling back to the last stable release for ICH10R which is 10.1.0.1008. When that failed I suspected that the RAID card BIOS of my Intel SRCSAS18E RAID card in this system was overriding the ICH10R RAID BIOS. I suspected this because during reboots the Intel RST RAID interface (Ctrl+I) did not appear, but the SRCSAS18E BIOS (Ctrl+G) was shown. I removed the server from the rack, pulled the SRCSAS18E, and voila, the ICH10R RAID BIOS appeared and I was suddenly able to manage the arrays from RST within the operating system. The first thing I did was delete the array (very bad move) and attempt to recreate it using default values. As the disk appeared uninitialized, I tried repairing the partitioning table using Active @ Partition Recovery to write a default GPT table. I've since realized this was a bad move because I've overwritten the first few stripes of data. After several attempts at recovery, I realized I might not have used the default 128K stripe size, I might have used 4k or 8k. I might also have used ReFS rather than NTFS to manage the 11TB volume, which Active's software does not list as a data recovery option. So my question is... where do you think I should go from here. I don't know the original stripe size, so I have to run each data recovery option against each possibility (4k, 8k, 128k... and if those fail, 16k, 32k, and 64k), which means deleting and recreating the array each time. I don't know if the volume is NTFS or ReFS (I would lean towards ReFS) and my current data recovery software isn't aware of ReFS. I rebuilt the partition table (GPT) at each stripe size (4k, 8k, 128k), so any remnant of the original partition table is likely overwritten. Options include: Running a different recovery software, like EaseUS, that is ReFS aware? Do I keep running Active @'s SuperScan on each partition configuration? Do I pull the drives and send them to a data recovery service like Kroll OnTrack (the data recovery company that recovered data from the space shuttle Colombia in 2003)? Note, these drives held about 5TB of data and almost all of it is replaceable, most of it was movies, music, app installers, etc. There is only about 100GB of pictures, documents, etc. that we need to recover.