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SAN/cluster drive mirroring following on http://www.experts-exchange.com/Storage/Misc/Q_27715600.html

Following up on this post:
https://www.experts-exchange.com/questions/27715600/Virtual-san-applicance-software-and-clustering.html

Assume I have a system set up as described in the post above. I have one server - Server1 - in a cluster that has directly attached storage and the other - server2 - sees that directly attached storage as ISCSI or via some virtualized ISCSI arrangement or any other protocol that would allow clustering of drives.  In that situation the directly attached storage on server 1 is a single point of failure. Assume I have the resources to attach an equivalent amount of directly attached storage to server B. Would any of the Virtual Storage Appliance software described in the original post - or any other software - allow me to mirror the directly attached storage on server A to the directly attached storage on server B?  I am willing to look at both 'live' synchronization and not-so-live but very frequent synchronization - no more than an hour between synchronizations?
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Avatar of Andrew Hancock (VMware vExpert PRO / EE Fellow/British Beekeeper)
Andrew Hancock (VMware vExpert PRO / EE Fellow/British Beekeeper)
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Thanks as always for your quick reply and knowledge.  This mirroring is above and beyond Windows clustering, correct?  So in my example if the physically directly attached storage on server1 crashes/suffers catastrophic failure - dunked with a vat of acid - the directly attached drives on server 2 will be a mirror of the last synch time - possibly right up to date if that type of synching is available?
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Connollyg:
If I understood Hancocka when Server1 goes down and the drives directly attached to it go down as well at the same time Server2 will see the drives directly attached to it which were a mirror of the drives attached to Server1 up to the time Server 1 went down if I chose to have that type of 'instant' mirroring via the Virtual Storage Appliance software.
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Thanks for all the good info.