High availability means that an IT system can be used continuously without failures. A system failure can be caused by the following reasons, among others:
· Hardware error (hard disk damage, power cut, CPU failure, damage to main memory)
· Logical error (required software is deleted, required data is deleted, unsuitable data is imported)
To reduce the probability of system failures and to minimize their effect, you can take precautions at hardware level and at a logical level. See Tips for Avoiding System Failures.
High availability actions go beyond these classic precautions. Such actions generally make sense only for large or particularly critical systems.
You can carry out the following high availability actions:
· Set up a hot standby system with cluster software
See also:
·
SAP High Availability, High Availability for
the MySQL MaxDB Database