HP Storage Mirroring Software - Manual (Page 18)

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Sample Configurations
Storage Mirroring is an exceptionally flexible product that can be used in a wide variety of network configurations. To
implement Storage Mirroring effectively, it is important to understand the possible configuration options and their relative
benefits. Storage Mirroring configuration options can be used independently or in varying combinations.
One-to-One, Active/Standby
NOTE: Storage Mirroring’s replication and failover features have different machine requirements. If you use Storage
Mirroring to monitor and stand in for failed machines, HP recommends that the source and target machines
have identical versions of operating system and applications. By contrast, Storage Mirroring replication
operations do not require that the source and target machines have identical versions of operating system and
applications.
If you are using Microsoft Cluster Server, a dual-node cluster can act as any machine for any of the following
configuration samples.
Description One target machine, having no production activity, is dedicated to support one source machine. The
source is the only machine actively replicating data.
Applications This configuration is appropriate for offsite disaster recovery, failover, and critical data backup. This is
especially appropriate for critical application servers such as Exchange, SQL, and web servers.
This is the easiest configuration to implement, support, and maintain.
Considerations This configuration requires the highest hardware cost because a target machine is required for every
source machine.
Source Machine Target Machine
(Active) (Standby)