On Fri, 2 Feb 2007 06:42:04 +0800, Ron Hawkins wrote: >Bruce, > >My recollection is that tape drives would use DC Interlock mode and when all >you had was a primary and secondary B&T channel this would seriously impact >the DASD. I think the 3480 was the last drive that wasn't pure Data >streaming. >
I'll defer to your experience with mixing tape and dasd, but I'm pretty sure that data streamiong has nothing to do with it. IIRC, data streaming applies only to data transfer operations. One of the notorious problems with old tape drives was with rewind and forward space file, both of which remained connected until the operation was completed. -- Tom Marchant ---------------------------------------------------------------------- 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
