There are a number of high availability solutions for IBM i-based systems, but they can be broken down into two broad classes: hardware-level and logical. Each has unique qualities.
Written by Dr. Frank Soltis
Reliability has been a hallmark of the AS/400 since its inception. Careful design and integrated hardware and software gave it a reputation as a system that almost never crashed. Nonetheless, reliability does not equal availability. Databases must be backed up and reorganized. Operating systems must be upgraded. And disasters can happen. Any of these incidents can create system unavailability.