raidz2はraid6相当 raidz1はraid5相当
[RAIDZ2]
tv 3.5T 128K 3.5T 1% /tank
[RAIDZ1]
tv 5.2T 128K 5.2T 1% /tank
[RAIDZ2]
tv 3.5T 128K 3.5T 1% /tank
[RAIDZ1]
tv 5.2T 128K 5.2T 1% /tank