z/VM live guest relocation
“If the facts don’t fit the theory, change the facts.”
— Albert Einstein
z/VM 6.2 and later can relocate Linux guests between members in a single system image (SSI) cluster. This capability is known as live guest relocation (LGR). While Linux systems continue to run, they can be moved across logical partitions (LPARs) on the same central processor complex (CEC), or cross-CEC, if the SSI is set up that way. This new function allows for few or even no planned outages.
In this chapter, we provide a brief overview of LGR ...