1.In the top-level menu in the HCP System Management Console, mouse over Services to display a secondary menu.
2.In the secondary menu, click on Replication.
3.On the replication Overview page, click on the Create Link button.
The link creation wizard opens.
4.On the wizard Name page:
oIn the Name field, type a name for the link. Link names must be from one through 64 characters long and can contain any valid UTF‑8 characters, including white space. Link names are not case sensitive.
Link names must be unique within a replication topology.
oOptionally, in the Description field, type a description for the link. This text can be up to 1,024 characters long and can contain any valid UTF-8 characters, including white space.
5.Click on the Next button.
6.On the wizard Settings page:
–To create an active/active link, select Active/Active.
–To create an active/passive link for which the system on which you’re creating the link is the primary system, select Outbound.
–To create an active/passive link for which the system on which you’re creating the link is the replica, select Inbound.
oIn the Data Transfer section:
–Optionally, to compress data before it’s transmitted from one system to the other, select the Compress data option.
Compressing data increases network throughput but also increases processing time. Therefore, because compression applies to all transmitted data, you should enable it only if most of the data being replicated is compressible.
–Optionally, to encrypt data before it’s transmitted from one system to the other, select the Encrypt data option. Encrypting data keeps it confidential during transmission. The transmitted data is automatically decrypted on the target system.
If you don’t select this option, data is transmitted unencrypted, even if the data is encrypted on disk in the system sending it. However, regardless of whether the data is encrypted before transmission, it is still secured by SSL during transmission.
If your HCP system does not permit HTTPS, the Encrypt data option does not appear.
oIn the Replication Priority section:
–To have the replication service balance its processing time evenly across the namespaces being replicated, select the Balanced across namespaces option.
–To replicate objects with the oldest changes first, regardless of which namespaces they’re in, select the Oldest object first option.
7.Click on the Next button.
8.On the wizard Connection page:
oIn the Remote Hostname or IP Addresses field, type either the domain name of the other system you want to participate in the link or one or more comma-separated IP addresses of storage nodes in that system. For the domain name, use either of these formats:
replication.hcp-domain-name
replication.admin.hcp-domain-name
In these formats, hcp-domain-name must be the name of the domain associated with the network that’s selected for replication on the other system. For example, if the domain name is hcp-ca.example.com, you specify this in the Remote Hostname or IP Addresses field when using the second format shown above:
replication.admin.hcp-ca.example.com
For information on when the second format is required, see Displaying the zone definition for the replication network domain.
If you specify IP addresses for one or more nodes, they must be IP addresses in the network that’s selected for replication on the other system.
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Note: If you specify a domain name, the system on which you’re creating the link transmits data to all storage nodes in the other system. If you specify IP addresses, the system on which you’re creating the link transmits data to only those nodes. Therefore, you should specify IP addresses only if you have a compelling reason to do so (for example, HCP is not using DNS, or you need to reduce the processing load on some number of nodes). |
oOptionally, to specify a different port for the other system to listen on and/or network address translation (NAT) information for the system on which you’re creating the link, click on Advanced Configuration. Then, in the Advanced Configuration section, as applicable:
–In the Remote Port field, type the number of the port on which the other system will listen for data from the system on which you’re creating the link. The default port is 5748. Typically, you specify a different port only if other port usage makes it necessary.
–If the system on which you’re creating the link uses NAT for communication with the other system, specify the target for data transmissions from the other system:
•In the Local Hostname or IP Addresses field, type either the name of the domain associated with the network that’s selected for replication on the system on which you’re creating the link (as that name is known to the other system) or one or more comma-separated IP addresses of storage nodes in that network (as those addresses are known to the other system). For the domain name, use either of these formats:
replication.hcp-domain-name
replication.admin.hcp-domain-name
For information on when the second format is required, see Displaying the zone definition for the replication network domain.
Make sure the other system can resolve the domain name you specify.
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Note: The other system will transmit data only to the nodes identified by the domain name or IP addresses you specify. Therefore, if you’re using IP addresses, you should specify the addresses of all the storage nodes in the system. |
•In the Local Port field, type the number of the port on which the system on which you’re creating the link will listen for data from the other system. This is the port that’s exposed to the other system.
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Note: For network configurations that use NAT, multiple IP addresses must be configured to expose the HCP nodes. You cannot use multiple ports on the same IP address. |
9.Click on the Next button.
10.On the wizard Review page, review the link configuration.
11.If the link configuration is what you want, click on the Finish button to create the link.
If you’re creating a cross-release active/passive link on the primary system, HCP sends a link request to the replica. On the primary system, the link has a status of Pending remote reply. On the replica, the link has a status of Pending. For information on how to handle a pending link request, see Accepting or rejecting a pending cross-release link on a 7.0 replica.
If the link configuration is not what you want, you can use the Previous button in the wizard to return to pages on which you want to make corrections. Alternatively, you can press the Cancel button to leave the wizard without creating the link.
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Tip: If HCP cannot create the configured link, check that the other system is healthy and that you’ve correctly shared SSL server certificates between the two systems. |
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