Dell Wyse Suite HA setup

https://www.dell.com/support/manuals/us/en/04/wyse-wms/wms2.0_hag/introduction?guid=guid-ed09eb91-3af7-4cd0-ad06-2908b7356a52&lang=en-us

Was reading through this and probably works ok.  Anyone tried something else like an isci cluster storage for the install/DB that just goes back and forth to the primary server at the time?