Hi Check this out. This is for Cluster enabler Clusters [URL]  This is for SRDF Cli Product guide [URL]  Here are the release notes for SRM "VMware" [URL]  Here is SRDF Star. [URL]  Here is the basic notes that should outline SRDF for you.' [URL]  Hope that helps. Or speak to presales or your account manager to get a better idea of what suites your current infrastructure.
Next week we have SRDF activity i am doing home work for that , yes we do have sops for that but want best practice for SRDF. I am finding it difficult to get the emc primus docs so please let me know from where i will get that. @
what is best practice for the SRDF activity? and one more thing where i will 
get the emc primus documents?