Brocade Communications Systems StorageWorks 4400 - Enterprise Virtual Array Uživatelský manuál stáhnout pdf (Strana 12)

The most common deployment scenario is to have a Command View server at Site A or Site B, managing

both the protected and the recovery arrays. Figure 5 shows an Active/Passive Command View deployment.

In this example, the instance of Command View (CV-2) placed in the recovery site is actively managing

EVA 1 and EVA 2 arrays. In the event of a failover from Site B to Site A (test or recovery mode), the EVA

SRA attempts to use CV-2 to execute the storage failover operations. IF CV-2 is not available or not

responsive, the EVA SRA automatically activates the passive instance CV-1 to manage the failover.

Figure 5. Active/Passive Command View EVA deployment

The EVA SRA for Site Recovery Manager also supports active/active Command View deployment. In this

scenario, each storage system is managed by a different Command View server. As with active/passive

scenarios, an automatic Command View management change occurs when performing a Site Recovery

Manager failover in test and recovery mode.

However, this configuration is less practical from a Continuous Access management standpoint. The

drawback with an active/active configuration is that some EVA management tasks need both the source

and destination arrays to be available to Command View. This is the case, for example, when you create a

DR group. As a result, an Active/Active deployment may require the administrator to frequently change the

management ownership.

The diagram in Figure 6 represents an active/active configuration in a bidirectional replication solution.

The infrastructure at each site is managed by different teams, with each local Command View actively

managing the local array. The Site Recovery Manager Array Manager is configured to use CV1 and CV2.

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Brocade Communications Systems StorageWorks 4400 - Enterprise Virtual Array Uživatelský manuál Strana 12