This blog is co-authored by @Ravindra Walde.
NetBackup Flex Scale has site-level resiliency and replication capabilities that have grown easier to use and more flexible:
In the case of NetBackup, beginning a disaster recovery procedure means that both data backed up at the original, “primary” site and metadata created about that data must be replicated to the remote, “secondary” site prior to the disaster, so that they will already exist in the appropriate location when it’s time for recovery.
NetBackup Flex Scale provides the option for a dual-site, single-domain DR configuration. It can be configured in one of two ways:
In either configuration, the clusters are deployed separately at first, with the secondary site as a waiting “empty” cluster until the disaster recovery relationship is created using the appliance UI or API.
When the DR relationship is operational:
With the relationship in place, the replication relationships between STUs can be configured from the NetBackup primary service.
For example, as in the above figure, necessary data is replicated from site to site in the following manner:
A disaster recovery scenario could potentially involve the absence of either the primary or secondary site. If the primary site were affected, the following sequence of events would provide the replicated data as necessary:
If the secondary site cluster segment were the subject of a disaster recovery scenario and no longer available, step 4 would only be required to redirect any clients to use the primary site media services, as the primary server would be operational throughout.
With the exception of upgrades which are done in parallel on both sites, management of the cluster is done independently at each of the sites. For instance,
In short, NetBackup Flex Scale provides both choice and flexibility when implementing a disaster recovery solution, so that it can be perfectly suited to a customer’s business continuity requirements.
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