How to ensure AS/400 availability

摘要

The AS/400 system has the most complete inherent availability protection of any midrange system. But when built-in protection capabilities fail to meet an organization's availability requirements, a multiple-system strategy is a sound investment. AS/400 high-availability systems comprise 4 major components: hardware configuration, role switching facilities, mirroring software and a process monitoring interface. The software used to enable such a solution should meet the following standards: 1. refresh-while-active capability, 2. transaction consistency, 3. fault tolerance, 4. ease of use and administration, and 5. incremental change mirroring.