Troubleshooting
This chapter provides troubleshooting information for global-active device operations and instructions for contacting the Hitachi Solution Support Center.
- Parent Topic
- Global-active device
The global-active device (GAD) feature supports read/write copies of the same data in two places at the same time. Its active-active design implements cross-mirrored storage volumes between two matched storage systems accepting read/write I/Os on both sides that are continuously updated. Global-active device assures that an up-to-date storage volume is always available and enables production workloads on both systems, while maintaining full data consistency and protection. In addition, the use of active-active stretch clustering can also be used for nondisruptive workload migration and nondisruptive data migration, without requiring the use of a separate intermediate system.
- Global-active device
- Child Topics
- General troubleshooting
- Troubleshooting related to remote path status
- Error codes and messages
- SIM reports of GAD operations
- Restoring pair statuses when
a
GAD consistency group contains local I/O mode pairs and block I/O mode pairs
When a GAD pair is suspended due to a failure, if a GAD consistency group contains pairs whose volumes are in Local I/O mode and pairs in Block I/O mode, you can restore pair statuses in the consistency group after recovering from the failure.