Here is the tapetype for sony SDT-7200

[Edwin Chiu]

Output from tapeinfo:

It's a 4mm 4GB DDS-2 DAT. No hardware compression.

define tapetype SDT-7200 {
    comment "Sony DDS-2 DAT drive"
    length 3820 mbytes
    filemark 110 kbytes
    speed 700 kbytes
}