Need help with Tape Backup Drives

[jh417@cleveland.Freenet.Edu (Thomas J. Kelly)]

Over the weekend I bought several used tape backups. I need some help with
them. I have the following:
 
1) Archive Corporation  Model 2150S. It has a 50 pin ribbon connector. I
presume a SCSI interface.
 
2) Tecmar Mac Drive It's an external case with pwr supply and SCSI interface
connector. It contains a Tandberg 3330 (TDC 3300 Series) with a 34 pin cable. 
The cable connects to another board which has a 50 pin cable. I presume the
board converts the interface to SCSI. The board was made by Emulex. The 50 pin
cable connects to the 50 pin SCSI connector on back of case.
 
3) Tandberg 3309 90 ips (TDC 3300 Series) with a 34 pin cable.
 
4) Tandberg Data
   TDC Series
-More-
   Streaming Tape Cartridge Drives
   TDC 3319
   Reference Card
 
   The Reference Card indicates:
   Interface    QIC-02
   Tape Format: QIC-24 standard
                QIC-11 optional
 
5) Lots of data cartridges
   DC600A
   DC300XL
   DC615A
 
Would someone fill me in on exactly what I have and how to use it on my Mac,
Apple IIgs, and PC Clone.
 
Thanks
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I do repairs and sell (used) hardware and software for Apple II, Mac, and IBM.