All IBM 3490's on mainframes were either Block MPX channel (bus/tag) or ESCON. The STK 9490's on mainframe were also ESCON though they did have a SCSI interface for distributed system attachment. The IBM Magstar (3590) series were natively FICON and ESCON capable depending on how you configure the drive/controller. The newer 3592's are also either ESCON or FICON though they are really too fast for ESCON. All the Magstar drives have standalone (non_ATL) configurations but are now usually installed in ATL's or VTL's in today's world.
This information is available in the IBM salesmanual at www.ibm.com/common/ssi and in the STK support web site through either www.sun.com or directly at http://www.sun.com/storagetek/tape.jsp This is one of the few threads on this list serve to which I felt qualified to respond (I am a retired IBM Consulting systems Engineer with all me time spent in mainframe hardware sales). Please feel free to contact me offline if you need to talk about hardware configuration options. ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html

