Just adding to the other good answers, in no particular order: 1. WORM tape is available.
2. Logical WORM is available: https://www.ibm.com/docs/en/ts7700-virtual-tape/5.1.1?topic=data-logical-worm 3. z/OS can mount NFS directories in read-only mode and/or the NFS server can enforce read-only. 4. zFS can be read-only. Also, here's the primary documentation on PPRC secondary read-only devices: https://www.ibm.com/docs/en/zos/2.4.0?topic=features-defining-whether-io-device-is-read-only - - - - - - - - - - Timothy Sipples I.T. Architect Executive Digital Asset & Other Industry Solutions IBM Z & LinuxONE - - - - - - - - - - E-Mail: [email protected] ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
