Kevin, With our last Dasd upgrade we went to Mod-27s where possibe (the large SMS pools), to Mod-9s for our system volumes and other smaller pools and defined some mod-3s and mod-1s to fill the eight-packs and use them for dedicated volumes like JES2 checkpoint, catalogs etc.
No problem for current software. Be aware if you want to go beyond mod-27s (more than 32767 cylinders) up to mod-54. The halfword cylinderaddress will have the top-bit on and software much support this. Check your vendors for this. Kees. "Klein, Kevin" <[EMAIL PROTECTED]> wrote in message news:<[EMAIL PROTECTED]>... > We're looking at upgrading our DASD. In the process, we're considering going to all mod-9s or higher. Other than the 64k-1 track limit that was "fixed" in z/OS 1.7, are there any technical gotchas if I use mod-9s as system volumes? > > ######################################################################## ############# > Attention: > The information contained in this message and or attachments is intended > only for the person or entity to which it is addressed and may contain > confidential and/or privileged material. Any review, retransmission, > dissemination or other use of, or taking of any action in reliance upon, > this information by persons or entities other than the intended recipient > is prohibited. If you received this in error, please contact the sender and > delete the material from any system and destroy any copies. > ######################################################################## ############# > > ---------------------------------------------------------------------- > 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 information, services and offers, please visit our web site: http://www.klm.com. This e-mail and any attachment may contain confidential and privileged material intended for the addressee only. If you are not the addressee, you are notified that no part of the e-mail or any attachment may be disclosed, copied or distributed, and that any other action related to this e-mail or attachment is strictly prohibited, and may be unlawful. If you have received this e-mail by error, please notify the sender immediately by return e-mail, and delete this message. Koninklijke Luchtvaart Maatschappij NV (KLM), its subsidiaries and/or its employees shall not be liable for the incorrect or incomplete transmission of this e-mail or any attachments, nor responsible for any delay in receipt. ********************************************************************** ---------------------------------------------------------------------- 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
