Hardware Requirements
Macintosh desktop computer with ATTO UL3S, UL3D, UL4S, UL4D, or UL5D SCSI adapter. Some older SCSI cards may work, at your own risk. The UL3 series are for PCI, UL4 for PCI-X, and UL5 for PCI Express slots. The 'S' means single channel, 'D' = dual channel.
or
Any Macintosh with ATTO iSCSI Ethernet adapter. This configuration has not been tested yet on Intel Macs, but is expected to work. The Ratoc Firewire to SCSI adapter has worked for some users with older DLT drives, but only for writing, not reading.
Software and Drivers
OS 10.4.10 or 10.4.11 (Tiger) or OS 10.5.1 (Leopard).
ATTO driver 4.20 for the UL5D (PCI-Express) or UL4S and UL4D (PCI-X).
https://www.attotech.com/software/driver34.html
ATTO driver 3.21 for the UL3S and UL3D (PCI).
https://www.attotech.com/software/disc/driver15.html
You must create an account at attotech.com to access their download page.
DLT Drives
DLT8000, DLT7000, DLT4000, DLT2000, or DLT2000 XT drive. Check Here for more informtion.