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PowerStore support two types of back-end connectivity for the data transfer from the source system to PowerStore.
PowerStore uses the replication tagged ports for the import traffic over iSCSI. We can use one storage network for replication and import. By enabling the Available/Current Usages column, we can see which ports will be used for replication import, as shown in the following figure.
With PowerStoreOS 3.0, every Fibre Channel (FC) port now has a SCSI Mode and Import Capable attributes.
• SCSI Modes:
– Dual: A port in dual mode can be used as both initiator (for front-end traffic) and target (for import traffic). See Figure 2 for an example.
– Target: A port as target can be used for front-end traffic only.
• Import capable:
– Yes: This port can be used to import data. A PowerStore system has two ports per node, for a total of four ports that can be used for importing data over FC, as shown in the following figure.
– No: This port does not support import data
• The dual mode is only supported on the Fibre Channel (FC) IO Module 0 Port 0 and Port 1
– These ports can have both front-end and back-end (import) traffic.
– There is no support for direct connect.
– If you plan to use FC as the back-end connectivity for the import, ensure that the zoning between the source storage system and these two ports, IO Module 0 Port 0 and Port 1, is established before starting the import.