Pairing appliances for remote replication
Use the following procedures to pair two appliances for remote replication. These steps require the coordination of an administrator from each appliance. You can start pairing from either appliance.
Make sure that the following prerequisites are met before you begin.
The node IP addresses of each appliance must be able to communicate with the console IP address of the other appliance.
If you use network access control, make sure that each appliance's allowed list includes all node IP addresses of the other appliance.
You must have a network interface configured to use for replication. Cohesity recommends that you do not select a shared interface or an interface that is configured with the same subnet as the appliance node IP addresses.
The following ports must be open in both directions between the two appliances:
Between the replication IP addresses:
4145 (TCP and UDP)
8199 (TCP and UDP)
8989 (TCP and UDP)
Note:
If you need to use the same subnet for replication and the node IP addresses, these ports must also be open between each appliance's replication IP address and the other appliance's node IP addresses.
Between all of the node and the Flex Appliance Console IP addresses:
443 (TCP)
To start the pairing process, the administrator of one of the appliances must send a client fingerprint to the second administrator. Use the following steps.
To send the fingerprint
- From the Flex Appliance Console on your appliance, navigate to the Remote replication page.
- Click Copy fingerprint.
- Share this fingerprint securely with the administrator of the second appliance.
Once the second administrator has the fingerprint from the first appliance, they can start pairing. Use the following steps.
To start pairing
- Obtain the fingerprint from the first appliance administrator.
- From the Flex Appliance Console on your appliance, navigate to the Remote replication page.
- Click Start pairing.
- Follow the prompts to enter the fingerprint and configure the network for replication.
If you select an interface that was configured with a dual stack IPv4-IPv6 network, you can only use one of the protocols for the replication IP address.
- When the pairing key displays, copy the key and share it securely with the first administrator.
Once the first administrator has the pairing key, they can finish pairing. Use the following steps.
To finish pairing
- Obtain the pairing key from the second appliance administrator.
- From the Flex Appliance Console on your appliance, navigate to the Remote replication page.
- Click Finish pairing.
- Follow the prompts to enter the pairing key and configure the network for replication.
When you are done, you can monitor the progress in the Activity Monitor on both appliances. Once the pairing has completed successfully, the Paired appliances section of the Remote replication page shows the Management connection status and the Replication connection status as Connected.