Maybe the word "corrupted" would have been better. Do you have any suggestions? This is the case I have. Originally after the update my second data drive stopped working, so I removed it from the hot-swap bay and troubleshooted it. Eventually I decided to see if the part was dead, so I shuffled around the drives. This caused one of my parity drives to go offline as well. I now suspected that perhaps the backplane inside the case was faulty, so I removed four of the drives from the hotswap bays and connected them directly to the breakout cables from my Dell H310. Now even less drives were showing up. I guessed that maybe my H310 was faulty, so I unplugged my hard drives and plugged them into my motherboard directly. Still not luck.
However, my cache drive is always detected by the bios. If I swap around the sata cables between the drives, the one that the cache drive is connected to always shows up in the BIOS.