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Conference decwet::winnt-clusters

Title:	WinNT-Clusters
Notice:	Info directories moved to DECWET::SHARE1$:[NT_CLSTR]
Moderator:	DECWET::CAPPELLOF

Created:	Thu Oct 19 1995
Last Modified:	Fri Jun 06 1997
Last Successful Update:	Fri Jun 06 1997
Number of topics:	863
Total number of notes:	3478

643.0. "Microsoft Exchange Clustering and Wolfpack" by DECWET::CAPPELLOF (My other brain is a polymer) Wed Feb 19 1997 22:29

              <<< DECWET::DOCD$:[NOTES$LIBRARY]WOLFPACK.NOTE;2 >>>
                                 -< WOLFPACK >-
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Note 13.0           Microsoft Exchange Clustering Discussion             1 reply
HERON::decvtt.sbu.vbe.dec.com::lalli "Somewhere In " 15 lines  19-FEB-1997 07:52
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Let's use this note to discuss Exchange Clustering stuff.

Until we had the visit of a Microsoft Technologist from Paris this 
morning (also a friend of mine), I thought Exchange was not ready to 
incorporate ANY clustering features until maybe V6.0.

However our Microsoft Insider this morning stated that Exchange 5.0 
(Yes 5.0) is postponed 1 month to incorporate failover capabilities.

I have always got goos information from this guy.

Any other information?

Didier

T.R	Title	User	Personal Name	Date	Lines
643.1	Wolfpack will probably have simple Exchange failover	DECWET::CAPPELLOF	My other brain is a polymer	`Wed Feb 19 1997 22:30`	11
	DECWET::CAPPELLOF "My other brain is a polymer" 8 lines 19-FEB-1997 08:33 -< Wolfpack will probably have simple Exchange failover >- -------------------------------------------------------------------------------- I think your information is accurate. The Microsoft Wolfpack group says they will have "simple Exchange failover" when Wolfpack V1.0 ships. I think this means you can have Exchange server running on a single node in the cluster. When failover occurs, Exchange server starts on the other node. This is similar to what we proposed doing for Digital Clusters, but there were not enough engineering resources to work on it.
643.2	No Exchange Failover for Digital Clusters?	GUIDUK::HEALY	Alan Healy @ZSO	`Thu Feb 20 1997 23:59`	6
	Carl, I understood there was a chance that some sort of Exchange failover might be possible in Digial Clusters 1.1. It looks like this is not the case? Al
643.3	Need reduncdant system?	NETRIX::"rushc@mail.dec.com"	Chris Rush	`Fri Feb 28 1997 06:37`	7
	Does this mean that you would need a system sitting there doing nothing. We have an implementation with two Exchange servers (4100s). Would I have to buy a third to provide cluster failover or indeed two further systems? Chris Rush DTN 841 3345 [Posted by WWW Notes gateway]
643.4	Use standby system for other server work	DECWET::CAPPELLOF	My other brain is a polymer	`Fri Mar 14 1997 22:57`	9
	re .-1 In order to use "simple Exchange failover" feature promised for Wolfpack V1.0, you would have to have 2 additional servers - each pair would be a cluster. The second system in each cluster can't run Exchange while it's running on the first system, but it can do other useful work. MS's grand plan is to allow Exchange to run on both servers at the same time, in a future version of Exchange.