Hacker News new | ask | show | jobs
by watersb 1764 days ago
LPARs -- "Logical Partitions"

I know the industry is full of technical jargon, but IBM is its own universe that pre-dates all of it.

Are LPARs like virtual machines, or like FreeBSD jails (which are like Docker containers, I think)? I get the impression that LPARs are full virtual machines -- each one could be running a different kernel as well as userland.
2 comments
zenlot 1763 days ago
It's more like virtual machines. You had to use PowerVM, which would take care of virtual I/O, memory, cpu and network. You were able to split in micro partitions and do live partition migrations. In those LPARs you could then use WPARs, which was more like FreeBSD Jails and Solaris Zones. You had two options for it: application wpars and system wpars. I've used AIX[with all hw ecosystem] for many years as a main driver in a bank, and it was ahead of everything else in the market. Still brings good memories - loved it.
link
656565656565 1764 days ago
LPARs are like full VMs on POWER/AIX, they run atop the Power VM hypervisor

https://developer.ibm.com/articles/cl-hypervisorcompare-powe...

link