[email protected] (Timothy Sipples) writes: > Uh huh. And so can z/VM, and so can KVM for IBM z Systems and > LinuxONE. Moreover, I would argue that Concurrent Processor Drawer > Add and Concurrent Processor Drawer Repair/Replace are extremely > sophisticated instances of live system movement within an IBM z System > machine, and they are unique. You just never think about them that > way because the system magically does all the work as the technician > pops processors drawers in and out. It's like performing brain surgery > on an Olympic athlete at the same time she's swimming to win her gold > medal.
one of the VM370 service bureaus had live virtual machine migration between systems some 40+yrs ago ... POK was in the process of killing off VM370 product ... so the company wasn't interested in releasing something similar. Part of the issue back then was that they provided online 7x24 world-wide. At the time all of IBM mainframes had downtime for preventive maintenance .... so it was used for non-disruptive taking boxes offline/online as part of maintenance. turns out they had leveraged something I had done for adding psuedo address space for every virtual machine ... where all control blocks could be kept and could be removed to disk (to reduce real storage virtual machine footprint when idle). They added support for pulling it back in on different system in loosely coupled configuration. -- virtualization experience starting Jan1968, online at home since Mar1970 ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
