I'm running version 2.1.561. Initially, it did report it as missing with an option to remove it from the pool. In my attempt to fix it, I removed it as an ISCI target from FreeNAS and added it back. I did this several times before giving up. On my last attempt, it disappeared from the pool altogether. It's when I reboot the system that I still get a missing drive error even though it no longer appears in the pool. I'm also getting locked disk errors, which I assume is PrivePool thinking the drive is still there? I've attempted to remeasure several times but it still shows the 3TB as unduplilcated. Often times it sits idle with no activity even though it should be duplicating data. I'm currently running a backup of all the data in the pool. I'm hesitent to make any changes until the backup is complete. As soon as that's done I will turn on file system logging and do a reset of DrivePool.