Storagetek StorageNet Router 3250 "seagate model code" Questions

...model no: L-100, Lib Firmware: 6.0, Boot code: 3.00, Number of Drive: 4, Drive Type: Seagate LTO-1, Drive-1 Firmware: 1527, Drive-2 Firmware: 1527, Drive-3 : Empty Slot(No Drive), Drive-4 ...