My Z2 had à drive failure recently, with 4To drives. Took me almost 3 days to re-silver the array 😅. fortunately had a hot spare setup, so it started as soon as it failed, but now a second drive is showing signs of failing soon, so I had to pay the AI tax (168€) to get one asap (arriving Monday), as well as a second one, cheaper (around 120€), but which won’t arrive until the end of April.