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You could remove dependancies from cluster services to stop the one service from taking everything else down.... but it would better to find the cause....<br />
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if there is nothing in the event log - you might want to turn on cluster diagnostics logging - but if the cluster services are being re-started, there would HAVE to be something in one of the logs.<br />
<a href="http://technet.microsoft.com/en-us/library/aa996161(EXCHG.65).aspx" rel="ugc">http://technet.microsoft.com/en-us/library/aa996161(EXCHG.65).aspx</a>
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You could remove dependancies from cluster services to stop the one service from taking everything else down.... but it would better to find the cause....

if there is nothing in the event log - you might want to turn on cluster diagnostics logging - but if the cluster services are being re-started, there would HAVE to be something in one of the logs.
http://technet.microsoft.com/en-us/library/aa996161(EXCHG.65).aspx [http://technet.microsoft.com/en-us/library/aa996161(EXCHG.65).aspx]

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It's fixed and working again. &nbsp;
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One of my Exchange Mailbox cluster resources keeps failing causing other resources to fail. &nbsp;The Exchange Information Store Instance keeps failing and taking other resources offline every 5 minutes. &nbsp;I can go into cluster administrator and bring the resource back on line with no problems. &nbsp;There is nothing in the event log to point to what the problem could be.
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One of my Exchange Mailbox cluster resources keeps failing causing other resources to fail.  The Exchange Information Store Instance keeps failing and taking other resources offline every 5 minutes.  I can go into cluster administrator and bring the resource back on line with no problems.  There is nothing in the event log to point to what the problem could be.

Exchange Information Store Instance

Exchange is the server side of a collaborative application product that is part of the Microsoft Server infrastructure. Exchange's major features include email, calendaring, contacts and tasks, support for mobile and web-based access to information, and support for data storage.