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VMware Live Site Recovery leverages storage array-based replication such as Dell Symmetrix Remote Data Facility (SRDF) to protect virtual machines in VMware vSphere environments.
Note: Before version 9.0, VMware Live Site Recovery was known as VMware vCenter Site Recovery Manager or SRM. The term VMware SRM, or SRM, is used in this guide.
The interaction between VMware SRM and storage array replication (SRA) is governed through a well-defined set of specifications. The storage array vendor implements these VMware-defined specifications as a lightweight application known as the storage replication adapter.
Dell SRDF Adapter is an SRA that enables VMware SRM to interact with a Dell storage environment. It allows VMware SRM to automate storage-based disaster restart operations on PowerMax arrays in an SRDF configuration. The SRDF Adapter for SRM supports SRDF/Synchronous, SRDF/Asynchronous, SRDF/Metro, Concurrent SRDF, Cascaded SRDF and SRDF/Star modes of operation, depending on the SRA version and array.
SRM is the preferred disaster recovery software for enterprise customers running vSphere on Dell arrays. The interaction of Dell replication software and SRM requires detailed explanation. See Implementing Dell SRDF SRA with VMware SRM for more information.