Exagrid with a 9 TB drive. It showing as full, but I’m only using 3 TB

0 down vote favorite I have an Exagrid with a 9 TB drive. It showing as full, but I’m only using 3 TB.

[root@RFExaGrid1 shares]# lsblk NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT sda 8:0 0 9.1T 0 disk ├─sda1 8:1 0 46.6G 0 part / ├─sda2 8:2 0 11.2G 0 part [SWAP] └─sda3 8:3 0 9T 0 part /home1 sdb 8:16 0 7.5G 0 disk └─sdb1 8:17 0 7.5G 0 part [root@RFExaGrid1 shares]#