Planning your storage for additional applications

Last published : Aug 05, 2026
The information provided in this section is generic to any application. Make sure you create the appropriate disk groups and volumes to hold the application data. If your application requires replication of registry keys between the cluster systems, then Veritas recommends that you create a dedicated RegRep volume so that its MountV dependency is not linked with any other application-specific resources in the group.
Decide how you want to organize the disk groups and the number and type of volumes you want to create. Some considerations are:
  • The number of disk groups that are needed
The number of disk groups depends on your application and the planned organization of the data. VCS requires that the application program files be installed on the local system drive of the server. Data files and other related files, such as logs, are placed on the shared storage (VMDg) or non-shared storage (VMNSDg). Typically, a main organizational unit in your application would be contained in a single disk group.
  • The type of volumes you want to create
    • Mirrored and RAID-5 volumes provide fault tolerance for critical data.
    • Striped volumes add performance capability.
    • Volumes that are both mirrored and striped offer both performance and fault tolerance.
      Note: If you plan to use replication software, such as Volume Replicator, do not use software RAID-5 volumes. This does not apply to hardware RAID-5.
Recommendations:
  • Use mirrored volumes for logs.
  • Use striped or mirrored striped volumes for data.
  • The implications of backup and restore operations for the disk group setup
  • The sizes of databases and logs, which depend on the traffic load
  • The type of replication that you plan to use
If you plan to implement a disaster recovery configuration with Volume Replicator, a Storage Replicator Log (SRL) volume is required for each disk group that contains volumes that are replicated. You can create the SRL volume now or you can create it later when you run the Disaster Recovery Wizard. If you create it later, ensure that you allow sufficient disk space for this volume.
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