Thank you for this. I discovered I had this option on my Dell T320- modded to T420. It had a dedicated chip for the motherboard to use two SD cards in RAID 1. The problem here is both disks need to be the exact same size. I tried aftermarket SD cards class 10 for industrial use, but they did not work even formatted. I ended up needing to get DELL proprietary SD cards for it to work. Without them formatted to FAT like you said it would lock up my system if they weren’t cleared and didn’t have any partitions. I have ran Citrix off it, but I ran out of time with the controller the last time I logged in. So I didn’t get to mess with Vsphere just ESXI. I dont know what else would be safe to run off of it, but it’s a very cool feature.
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