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HP OpenVMS Systemsask the wizard |
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The Question is: I need to find out about the GALAXY. I know that with GALAXY, I can drag and drop CPU from one QBB to another QBB. The problem is, do the GALAXY move the I/O too? I am afraid the bottleneck still woth the I/O if I move CPU or memory? The second thing, if I have one or more CPU faulty in one QBB, how do I replace it? Do I need to shutdown the box or just the QBB? Do the CPU support hot swap? The Answer is : Please visit the OpenVMS Galaxy portion of the OpenVMS website, and please contact Cerner for information on Cerner products and Cerner recommendations. Various types of I/O controllers can have their interrupts targeted to specific processors, this is known as Fast Path. So yes, you can potentially (re)target your I/O across available processors. (You will want to consider the configuration from the individual partitions, and view the transfer of a processor from one partition to another as simply issuing a STOP/CPU in one partition, and then using START/CPU in another. There is far more involved here of course.) The specifics of swapping and power-down requirements depend directly on the particular processor platform involved. OpenVMS Galaxy is also not a hardware fault-tolerant environment; a processor hardware fault can potentially cause the failures of one or more software instances. (The console will then configure around a hard failure of a processor, and will permit the system(s) to reboot with the remaining processor(s).) The specifics of the Fast Path I/O also depends on the OpenVMS version and the specific controllers involved -- specific high-volume controllers have support for Fast Path on specific OpenVMS versions. The OpenVMS Galaxy configuration utility (GCU) is aware of Fast Path, and will not permit a processor that is a Fast Path target to move. Further, the GCU is also cogniscent of what components need to be powered down within a particular platform, should component hardware need to be swapped. (In older hardware systems running OpenVMS Galaxy, the power-down domain is always the entire system.)
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