TruCluster Server Handbook (HP Technologies)

26.5 Migration Benefits

  1. More flexible configurations (can use LAN interconnect) – Chapter 3.

  2. Single System Image (management) – Chapters 1 and Chapters 2.

  3. Cluster File System – Chapters 2 and Chapters 13.

  4. Performance benefits due to:

    1. CFS and "improved" DRD – Chapters 13 and Chapters 15.

    2. Ability to use newest AlphaServers.

    3. Ability to use newer, faster storage.

  5. Improved manageability – GUI management interfaces – Chapters 5, Chapter 11, and Chapter 19.

  6. Simplified installation/configuration – Chapter 10, Chapter 11 and Chapter 12.

  7. General ease of system administration (LSM, software installation, etc.) – Chapter 14 and Chapter 19.

  8. Cluster Alias (cluster or cluster subset appears as a single machine to clients) – Chapter 16.

  9. CAA for high availability of single-instance applications and ASE-style start and stop scripts migrate easily – Chapter 23 and Chapter 24.

  10. CAA allows resource dependencies, polling and auto-restart capabilities – Chapter 23 and Chapter 24.

  11. CAA advantages over ASE (no need to manage storage in action scripts); more flexible dependency rules provide greater range of failover choices – Chapter 23 and Chapter 24.

  12. Application compatibility (if an application runs on Tru64 UNIX V5.X, it will run on TruCluster V5.X) – Chapter 3.

  13. Great platform for large multi-node database applications – Chapter 3.

  14. More scalable (easier to add members) – Chapter 11.

  15. Support for Fiber Channel multi-path storage access – Chapter 4.

  16. Larger storage configurations – Chapter 4.

  17. Wide SCSI addressing – Chapter 4.

  18. Improved AdvFS performance – Chapter 13.

  19. Clusterized LSM (looks the same as LSM on a standalone system) – Chapter 14.

  20. No requirement for symmetrical I/O configuration among cluster members – Chapter 3.

  21. You'll be cool.

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