Why have you posted twice: here and Pool disappeared ?
If you want help to try to get your data back online then you need to stop griping and ask for help instead - and provide us with details of your hardware and pool configurations.
In the mean time here are some commands to run (and please paste the output from each into a separate </> box):
lsblk -bo NAME,LABEL,MAJ:MIN,TRAN,ROTA,ZONED,VENDOR,MODEL,SERIAL,PARTUUID,START,SIZE,PARTTYPENAME
sudo zpool status -v
sudo zpool import
lspci
sudo sas2flash -list
sudo sas3flash -list
sudo storcli show all