Regarding http://wiki.splunk.com/Community:Deploy:How_To_Set_Up_Search_Head_Pooling_and_Shared_Bundle
you should have your SHs behind a LVS and them sharing same "pooling" folder. In that way, if your job SH goes down, you won't need to enable the pipeline scheduler manually. (and you will be only replicating the data across other DFS servers instead doing into splunk servers).
That should avoid the DFSR issues.
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