ZFS

apt install -t buster-backports zfs-dkms zfsutils-linux
modprobe zfs
for a in c d; do wipefs /dev/sd${a}1 -a ; done
zpool create tank mirror /dev/sdc1 /dev/sdd1
zfs create -o mountpoint=/data tank/data
zfs set sharenfs="rw=172.22.0.0/16,root_squash,ro=*.ihep.su" tank/data
zfs set xattr=sa tank/data
zfs set acltype=posixacl tank/data
zfs set atime=off tank/data
zfs set relatime=off tank/data
zfs share tank/data
exportfs -v
zfs set compression=lz4 tank/data
zpool set autoexpand=on tank

No pools after reboot

solution

options zfs zfs_autoimport_disable=0

Performance

zpool iostat -lv