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Replicating tenants and namespaces
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- Geographically distributed data protection
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- An individual Hitachi Content Platform (HCP) system maintains a repository of objects in one or more namespaces. To ensure data availability and protect against data corruption, namespaces can be configured (using service plans) to store multiple copies of each object. However, storing multiple copies of objects on only one system does not provide protection against the unavailability or loss of that system.
- Configuring SSL for replication
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- Before replication can occur between two HCP systems, the systems involved must have a trust relationship with each other. This trust is based on shared SSL server certificates.
- Working with replication links
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- A replication link provides all the information the Replication service needs to perform its functions. You can create a link in the HCP System Management Console for either of the systems involved in the link.
- Working with erasure coding topologies
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- An erasure coding topology provides all the information the Replication service and Geo-distributed Erasure Coding service need to implement erasure-coded protection. You can create and manage an erasure coding topology in the HCP System Management Console from any of the HCP systems included in the topology.
- Monitoring replication
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- You can monitor the status of each currently configured replication link, as well as replication and recovery activity on the link, in the HCP System Management Console for either system involved in the link. By periodically reviewing link activity, you can decide whether to change the replication rate in the link configuration to accommodate other loads on system performance. You can also determine whether you need to add more storage capacity to either system.
- Managing replication
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- To help manage the load on an HCP system and the replication network, you can control the performance level for send activity on each replication link in which the system participates. You can use a schedule to change the performance level for a link automatically at specific times on a weekly basis. Alternatively, you can choose a single performance level for the entire week.
- Managing failover and failback
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- When one system involved in an active/active link fails or when the primary system for an active/passive link fails, you can fail over the link to the other system involved in the link. Failing over the link stops replication on the link and, if DNS failover is enabled, allows client requests that target the failed system to be redirected to the healthy system.
- Reenabling user accounts disabled on the replica
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- For HCP tenants on an active/passive link, tenant-level user accounts are replicated and are available for use on the replica. If an account becomes disabled on the replica due to consecutive failed login attempts, it cannot be reenabled on the replica because the tenant is read-only.
- Setting advanced replication options
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- To perform the activities listed, you need the service role.