The Mainframe is suppose to be shutdown here by June 30Th. I doubt they will make it but I have been tasked with many to do items before that. One of them is to erase degauss the VTS drives on our 3494-S10 before it leaves the building. I found this in a "Red book"
6.18 Data Security Erase In some systems, execution of the data security erase channel command causes random data patterns to be written on a volume to its end-of-tape. Instead, with VTS, the end-of-data (EOD) mark is repositioned at the logical block location at which the command was issued. Any data beyond that logical block location is no longer accessible. When the virtual volume is copied to a stacked volume, only the data up to the EOD mark is written. Any data beyond that point is ignored; it is no longer accessible by the host. The VTS does not take any action or provide any function to erase data on invalidated copies of a logical volume. Although the previous copies of a logical volume are not readily accessible, data on them remains on physical volumes. These copies are not written over until the corresponding stacked volume is reclaimed and the space occupied by the data is subsequently overwritten by new logical volumes. Since we are still running Z/OS V1R4 IBM support will not help me or answer any questions. Does anyone know or has anybody done the Data Security Erase (degauss) for VTS disk drives? If so how did you do it? Thanks, Phil ---------------------------------------------------------------------- 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
