What's the question? Why are we zipping on virual tape? Or why are we using virtual tape?
Craig -----Original Message----- From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED] On Behalf Of David Speake Sent: Monday, February 13, 2006 11:53 AM To: [email protected] Subject: Re: ZIP/390 with Virtual Tapes I'm curious as to the why do it? At least one of the IBM VT systems gives EOV when it gets a 3490 "full tape" quantity of data (but AFTER data Its compression 3490 style). It then later writes these 3490 logical volumes to 3590 carts as stacked volumes. But the 3590 compresses data from the control unit before placing it into internal cache. It only starts it's motors when it has a 384K block of data - even if you are NOT using 256K blocksizes via LBI. Channel bandwidth?? ---------------------------------------------------------------------- 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 ---------------------------------------------------------------------- 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
