Started having bad latency on one of my drives.. cause I was on zfs 0.7 there was no trim.. so upgraded to zfs 0.8 and trimmed, let it brr a bit.. and it's much better now :D
This is how you package something when you send it back to your supplier, for once a customer does this (usually people just put things loose in a box.. and arrives damaged, cause you know.. these boxes get thrown from time to time)