When connecting VSP One Block and other storage systems, the following restrictions apply on LU numbers when you create a pair.
For VSP One B20 series, a maximum of 2048 LU paths can be set. When you assign a host group to Fibre Channel ports, a maximum of 2048 LU paths can be set for each host group. In addition, a maximum of 2048 LU paths can be set for each port through the host group. When you set an iSCSI port as an iSCSI target, a maximum of 2048 LU paths can be set for each iSCSI target. In addition, a maximum of 2048 LU paths can be set for each port through the iSCSI target.
When you create a pair using VSP One B20 series as the source storage system, the following restrictions apply to LU numbers.
| Source storage system | Target storage system | Restrictions | ||
|---|---|---|---|---|
| Model | Firmware version | LU number that allows pair creation | Number of LU paths that can be set for each port | |
| VSP One B20 series | VSP G/F350, G/F370, G/F700, G/F900 | 88-08-12 or later | 0 to 2047 | 0 to 2048 |
| VSP E series | 93-07-22 or later | 0 to 2047 | 0 to 2048 | |
| VSP 5000 series | 90-09-23 or later | 0 to 2047* | 0 to 2048* | |
| VSP One B20 series | All versions | 0 to 2047 | 0 to 2048 | |
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* LU numbers 0 to 4095 can be used on VSP 5000 series. However, if the source storage system is VSP 5000 series, do not create pairs using LUs with LU numbers from 2048 to 4095 and LUs on VSP One B20 series. If you do, a failure such as pair suspension might occur in VSP One B20 series. |
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For VSP One Block 85, a maximum of 4096 LU paths can be set. When you assign a host group to Fibre Channel ports, a maximum of 4096 LU paths can be set for each host group. In addition, a maximum of 4096 LU paths can be set for each port through the host group. When you set an iSCSI port as an iSCSI target, a maximum of 4096 LU paths can be set for each iSCSI target. In addition, a maximum of 4096 LU paths can be set for each port through the iSCSI target.
When you create a pair using VSP One Block 85 as the source storage system and VSP 5000 series or VSP One Block 85 as the target storage system, the following restrictions apply to LU numbers.
| Source storage system | Target storage system | Restrictions | ||
|---|---|---|---|---|
| Model | Firmware version | Available LU numbers for pair creation | Number of LU paths that can be set for each port | |
| VSP One B85 | VSP 5000 series | 90-09-29 or later | 0 to 4095 | 0 to 4096 |
| VSP One B85 | All versions | 0 to 4095 | 0 to 4096 | |