l Add an iSCSI link.
a. In the Link Type drop-down list, select iSCSI.
b. In the Local Device area, set Controller and Local Port.
c. In the Remote Device area, set IP Address.
d. Click OK.
The Execution Result dialog box is displayed indicating that the operation
succeeded.
e. Click Close.
l Add a Fibre Channel link.
a. In the Link Type drop-down list, select FC.
b. Select the newly added Fibre Channel link and click OK.
The Execution Result dialog box is displayed indicating that the operation
succeeded.
c. Click Close.
----End
Follow-up Procedure
If error code 1073804034 occurs or the connection fails to be created, see the case What Can I
Do If the Remote Connection Fails to Be Created with the TOE Interface Module in FAQ.
After an iSCSI replication link is established, run change iscsi target and change initiator on
the primary and secondary end (For details about how to use these commands, see the
Command Reference of the corresponding product model.) to enable CHAP authentication for
the iSCSI replication link. If CHAP authentication is not enabled, spoofing may occur
between primary and secondary storage systems.
In the synchronous remote replication, if the distance between the local and remote storage
devices exceeds 25 km, you can run the following command to enable the fast write function
to ensure link transfer efficiency.
l FC link:
By default, this function is disabled. This function is only enabled for 4-port 8 Gbit/s
Fibre Channel links. You can run the change port fc fc_port_id=XXX
fast_write_enable=yes command to enable the fast write function. To obtain the value
of fc_port_id, run show port general. The function needs to be enabled on both the
local and remote storage system. Run the show port general port_id=XXX command.
When the status of Fast Write Enable in the output is Yes, this function is successfully
enabled.
l iSCSI link:
By default, this function is enabled. You are advised to enable this function. You can run
the change remote_device link link_type=iSCSI link_id=XXX fast_write_enable=no
command to disabled the fast write function. To obtain the value of link_id, run show
remote_device link. The function needs to be enabled only on the local storage system.
You can run the show remote_device link link_type=iSCSI link_id=XXX command to
query the status of this function. When the status of Fast Write Enable in the output is
Yes, this function is successfully enabled.
OceanStor V3 Series
Remote Replication Feature Guide for Block
3 Configuring Remote Replication
Issue 06 (2018-01-30) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
42
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