My enhancement request suggested to writing until EOV, then back up to the beginning of that VM:Backup domain, close the tape (with all the usual EOV, and cross-linked User Header and Trailer Labels), and re-write that domain on the fresh tape. It got more complex when a single domain would not fit on a single tape, but with newer tape technologies that may no longer be a significant problem. Food for fresh thoughts.
Mike Walter Hewitt Associates Any opinions expressed herein are mine alone and do not necessarily represent the opinions or policies of Hewitt Associates. "Stracka, James (GTS)" <[EMAIL PROTECTED]> Sent by: "The IBM z/VM Operating System" <[email protected]> 06/06/2008 10:35 AM Please respond to "The IBM z/VM Operating System" <[email protected]> To [email protected] cc Subject Re: Backup: Twinning Tapes to Remote Tape Unit Now that is interesting. How does that OS/390 utility know where the EOT reflector is located unless it spins the entire tape first? -----Original Message----- From: The IBM z/VM Operating System [mailto:[EMAIL PROTECTED] On Behalf Of McKown, John Sent: Friday, June 06, 2008 9:48 AM To: [email protected] Subject: Re: Backup: Twinning Tapes to Remote Tape Unit Curiousity question, because I don't know VM:Backup, is there a way to tell VM:Backup to only use n% of a tape? Our z/OS backup utility can be told to do this. If this is possible, then you could fill a tape up to, say, 80% and be fairly confident that the second tape would be long enough to hold that data. -------------------------------------------------------- This message w/attachments (message) may be privileged, confidential or proprietary, and if you are not an intended recipient, please notify the sender, do not use or share it and delete it. Unless specifically indicated, this message is not an offer to sell or a solicitation of any investment products or other financial product or service, an official confirmation of any transaction, or an official statement of Merrill Lynch. Subject to applicable law, Merrill Lynch may monitor, review and retain e-communications (EC) traveling through its networks/systems. The laws of the country of each sender/recipient may impact the handling of EC, and EC may be archived, supervised and produced in countries other than the country in which you are located. This message cannot be guaranteed to be secure or error-free. This message is subject to terms available at the following link: http://www.ml.com/e-communications_terms/ . By messaging with Merrill Lynch you consent to the foregoing. -------------------------------------------------------- The information contained in this e-mail and any accompanying documents may contain information that is confidential or otherwise protected from disclosure. If you are not the intended recipient of this message, or if this message has been addressed to you in error, please immediately alert the sender by reply e-mail and then delete this message, including any attachments. Any dissemination, distribution or other use of the contents of this message by anyone other than the intended recipient is strictly prohibited. All messages sent to and from this e-mail address may be monitored as permitted by applicable law and regulations to ensure compliance with our internal policies and to protect our business. E-mails are not secure and cannot be guaranteed to be error free as they can be intercepted, amended, lost or destroyed, or contain viruses. You are deemed to have accepted these risks if you communicate with us by e-mail.
