-- snip -- I would not say that Hyperswap (GDPS) only swaps UCB's. It must communicate the hardware to change the mirroring direction at the same time.
I remember we had to wait for new microcode levels to use Hyperswap or at least some of its new features. E.g. one of the features is (was) changing the PPRC link direction. The other example was the migration from hw model x to hw model y (both models from the same vendor). -- snip -- Changing mirror direction (failover/failback) is a GDPS 3.2 function. Hyperswap exploits this function, but I'm not sure if that means that Hyperswap has a hardware dependency. John ---------------------------------------------------------------------- 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
