Brocade Communications Systems StorageWorks 4400 - Enterprise Virtual Array Manual de usuario Pagina 5

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Figure 1. Configuration diagram
In this configuration, the VMware ESX servers can be clustered so that failures of a single ESX host only
require that VMs be restarted on another host in the same datacenter. For more information about VMware
High Availability (HA) see the VMware HA Concepts, Implementation and Best Practices white paper.
Failures of an EVA array require a failover of Continuous Access DR groups and a restart of the VMs in the
other data center. These operations are handled by VMware vCenter Site Recovery Manager. This solution
supports active/active replication by which each data center backs up the other. Both sides are protected
and recovery data centers.
Our disaster recovery objectives are defined as follows:
Recovery Point Objective: Low
Recovery Time Objective: Medium
Low=0 to seconds
Medium=minute to half hour
High=half hour to several hours
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