Exchange: DAGs and reseeding

*repost from my old blog: http://geekswithblogs.net/marcde/archive/2011/11/03/dags-and-reseeding.aspx I worked on a case today which had 2 Exchange 2010 servers in a DAG with about 6 mailboxes, all in healthy status. All but one that is. This DataBaseCopy just would not come back into sync and was stuck in the eternal Resynchronizing loop from hell. So our…

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Exchange: Recovery Storage Group

As you might, or not, be aware off there is no item level based recovery in Exchange that is natively supported by Microsoft. So to perform recoveries we need the recovery storage group (captain obvious). The purpose of this is to mount the database you want to recover from on the Exchange server and use…

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Exchange troubleshooting

*Repost from http://geekswithblogs.net/marcde Exchange is a complex and large product which can have one thousand and one possible issues, one more obscure as the next. The purpose of this guide is to shed some light, where possible, to how things work in Exchange (and outlook), how they can break and how you should approach the…

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How it works: Exchange 2007 CCR and transaction logs

The background workings of a CCR can be quite mysterious but are, all in all, not that difficult to understand. First of all we need to know the following things: There are two fundamental elements for the Exchange store:The transaction logs and the database Transaction logs are a maximum of 1 MB in size (in…

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