I have a RAID6 array with 1 logical drive. 3.7TB. The partition has been lost. I've tried several program to recover the partition. The most promising of the bunch was MiniTool Partition Wizard. It found the partition, and you could preview the file structure correctly, but when I tried to have it repair it just went back to an unallocated status.
Server Info: IBM Series x3650 7945. MegaRAID M5015
TestDisk gives the following error: partition sector doesn't have the endmark 0xaa55
If anyone has any suggestions about getting the partition online or recover the data I'm all ears... I will provide more information if needed... Going on 24 hours straight at this so I may be lacking in providing some information.