The terminal workstations, alws* and sbws*, are able to format
an external HDD using USB connection. Please see the following URL.
We recommend the format type of FAT, Ext2, Ext3, and Ext4.
There is a format type of "NTFS" in "Disk Utility" window, however
The terminal workstations cannot format the NTFS file system.
Thank you for your cooperation.
Astronomy Data Center