4 ms·
Sure, but they way we did that back in the 90’s was very different, and carried a much lower overhead than LPARs in the IBM mainframe world or any hypervisor or
by marcus0x62 4y ago
Sure, but they way we did that back in the 90’s was very different, and carried a much lower overhead than LPARs in the IBM mainframe world or any hypervisor or container used today — shared hosting “virtualization” in the 90’s was little more than chroot jails, and frequently not even that.
- neverartful 4y agoI think you're confusing LPARS with guests under z/VM. A mainframe LPAR is a coarse-grained (relatively speaking) partitioning of the system. LPARS are created and managed by a Hardware Management Console (HMC), and run on PR/SM [0]. No one creates mainframe LPARS to run a VPS. Those would simply be a guest under z/VM. Realistically speaking, z/VM would be running in an LPAR (less than the whole of the mainframe resources) and then within z/VM's LPAR, z/VM hypervisor allows all of its guests to run concurrently. [0] https://wiki.alquds.edu/?query=PR/SM https://wiki.alquds.edu/?query=PR/SM
- rbanffy 4y agoKVM is also available now in addition to z/VM. The IBM cloud “trusted environments” run on it.
- marcus0x62 4y ago>> ... or any hypervisor or container used today ... > I think you're confusing LPARS with guests under z/VM. I am not, but thanks.