Disclaimer: Guys if you happen to be suffering from “Event ID: 494” symptoms of you Microsoft Exchange 2003 server do not attempt anything before reading this article, I might save you a lot of time.

Level: I am assuming in the following that you already have good understanding of Microsoft Exchange 2003 operation and terminology, so this is for no newbies.

Symptoms: Typically a storage group will fail to mount and an error will be logged in the Application Log with an event id of 494. The error is the following
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