Performance considerations

The performance of your IBM® Global High Availability Mailbox system depends upon the interaction of the components, the communication paths between components, and the configuration settings. By monitoring your performance and tuning your system, you can balance file transfer speed with availability and protection from data loss. Your business requirements must be a consideration in designing and tuning performance.

Several key areas affect performance:
  • Number of data centers
  • Geographical distribution of data centers
  • Number of Cassandra nodes in the cluster and consistency settings for replication
  • Number of ZooKeeper nodes in the ensemble
  • Number of files transferred
  • Size of payloads
  • GPFS tuning (or other file system tuning)
  • Storage tuning (for example, adjusting concurrent access lease parameters)
  • Security settings, such as encryption for data during transfer and data at rest in storage