Exchange DAG 2010 Transactional Logs Truncation

Hi,

Log truncation is actually handled by exchange, not NetBackup. When ever the NetBackup reports that the backup is "done/successful" Exchange starts truncating the logs.

See the note from MS.

http://msdn.microsoft.com/en-us/library/office/bb204080%28v=exchg.140%29.aspx

Instant recovery would be a backup that use some type of storage snasphot technology. It makes a snapshot / point in time copy of the exchange databases which you can restore from. This copy can then be transfered to tape of kept for....instant recovery.

What is the problem?

My only other thought, although it is an oldish tech note is that it also says:

NetBackup supports Instant Recovery backups with Exchange 2007 or later for non-clustered and non-replicated environments. Instant Recovery requires a separate Snapshot Client license key

Which means it wont work with a DAG anyway!

The 7.6 Exchange Admin Guide says exactly that too.

#edit# Page 114

-Exchange Dag 2010 TLOGS truncation will not work when configured from NBU

No. That is not what we are saying.
We are saying that NetBackup will notify Exchange when backup has completed successfully.
It is then up to Exchange to truncate the logs.

To understand more about Instant Recovery, read up about it in NetBackup for Microsoft Exchange Server Administrator's Guide http://www.symantec.com/docs/DOC5172 
 

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