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How to Configure Remote Replication Provided that a Proxy Server Is Present?

Publication Date:  2014-10-31 Views:  108 Downloads:  0
Issue Description
During the configuration of asynchronous remote replication, adding targets to devices on both ends fails multiple times.

Alarm Information
How to configure remote replication if a proxy server is present?
Handling Process
- The OceanStor T series storage device does not support remote replication through the proxy server. If the network has a proxy server or other Network Address Translation (NAT) devices, the IP address of the service network port of the storage device changes owing to a certain translation.

- There is a verification mechanism for the OceanStor T series storage device to create iSCSI links between storage arrays. If the iSCSI initiator detects that the local configured IP address mismatches the one returned from the peer-end target, the verification fails, precluding service network ports of devices in different LANs from adding targets. As a result, peer-end devices cannot be detected, and the configuration of remote replication fails.

- The common method to solve this problem is to bypass the proxy server and use a router to establish the connection between the service site and backup site. After the route is added, targets are added to both ends to detect peer-end devices.

Figure 2 shows the network of bypassing the proxy server.