See ASR description:
ASR was first developed around SANsymphony to enable larger data centers and organizations to simplify remote site recovery while leveraging readily available IT assets between different sites. In releasing ASR for SANmelody, DataCore is providing a more cost-effective solution for smaller businesses and remote site deployments.
ASR makes distributed disaster recovery (D-DR) flexibility more practical for all organizations, thereby opening the field of users to smaller businesses. ASR can be tailored to whatever a company's cost structure allows.
"With ASR, DataCore has developed a distributed and cost-effective way to have IT assets at remote offices and branch offices (ROBOs) take over for the main data center when the central machines are unable to meet processing obligations," explains Augie Gonzalez, director of product marketing, DataCore Software. "Whether that is during planned facility outage or an unexpected disaster makes no difference. There are major cost savings from repurposing ROBO IT assets and personnel for business continuity."
Gonzalez also says DataCore's approach has an added benefit: regular disaster recovery tests and refresher training can be performed at the branch location during periods of slow activity, while the main data center processing continues undisturbed."
ASR for SANmelody builds on DataCore's universal storage virtualization software to move IT operations from a central site to one (or more) distributed contingency locations--and back again. While SANmelody ASR can be used between two sites, the far more likely scenario is a "hub and spoke" model in which a SANsymphony ASR license will be used in the central site, with connections to multiple remote offices/branch offices running SANmelody ASR.
This solution allows organizations to spread DR responsibilities across several smaller sites. Additionally, the solution makes no distinction between physical and virtual servers, unifying their DR operations in a common, automated process. And, ASR for SANmelody does not depend on duplicating equipment offsite, such as disk arrays and specialized networking gear.