> -----Original Message----- > From: IBM Mainframe Discussion List > [mailto:[EMAIL PROTECTED] On Behalf Of Bill Brown > Sent: Tuesday, August 02, 2005 10:11 AM > To: IBM-MAIN@BAMA.UA.EDU > Subject: VTS and stacking > > > Are there any benefits to stacking files on a tape when using vts?
Speaking generally, I would say no. For the IBM 3494-B18 in particular, there are two reasons: (1) A virtual tape on an IBM 3494-B18 only takes up the amount of space required for the labels and the data. You don't "waste" any "space" on the virtual volume. (2) if you reference just one file on a stacked tape, the entire virtual volume must be staged to the disk cache. This is a waste of cache and time. The only negative, if it is one, is that you need to define more virtual volumes in your tape management system. -- John McKown Senior Systems Programmer UICI Insurance Center Information Technology This message (including any attachments) contains confidential information intended for a specific individual and purpose, and its' content is protected by law. If you are not the intended recipient, you should delete this message and are hereby notified that any disclosure, copying, or distribution of this transmission, or taking any action based on it, is strictly prohibited. ---------------------------------------------------------------------- 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
