When you create a pair using VSP One B20 series as the source storage system and VSP 5000 series or VSP One B20 series as the target storage system, the following restrictions apply to namespace IDs when you create a pair.
| Source storage system | Target storage system | Restrictions | ||
|---|---|---|---|---|
| Model | Firmware version | Namespace ID that allows pair creation | Number of namespaces that can be created in an NVM subsystem | |
| VSP One B20 series (all versions) | VSP 5000 series | 90-09-23 or later | 1 to 2048* | 2048* |
| VSP One B20 series | All versions | 1 to 2048 | 2048 | |
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*Namespace IDs 1 to 4096 can be assigned to VSP 5000 series. However, when you connect VSP One B20 series and VSP 5000 series, do not create pairs using namespaces whose namespace IDs are 2049 to 4096. If you do, a failure, such as pair suspension, might occur in VSP One B20 series. |
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