DAGs are nice, but they need to make the clustering more resilient. We just had to go through a process of completely tearing down and rebuilding all 6 of our mailbox servers because the cluster configuration got corrupted.
From: Michael B. Smith [mailto:[email protected]] Sent: Wednesday, September 28, 2011 5:12 PM To: MS-Exchange Admin Issues Subject: RE: Backup of Exchange 2010 Yeah, that was the "best practice" preached prior to Exchange 2010 RTM and at RTM. Today, SingleItemRecovery would be recommended instead. We'd still recommend a third DAG copy though. Preferably in a remote data center. Just not lagged. Regards, Michael B. Smith Consultant and Exchange MVP http://TheEssentialExchange.com From: Maglinger, Paul [mailto:[email protected]]<mailto:[mailto:[email protected]]> Sent: Wednesday, September 28, 2011 6:09 PM To: MS-Exchange Admin Issues Subject: RE: Backup of Exchange 2010 I was told in the Exchange 2010 class I told that you could have a 3 member DAG, the third being lagged in case your database became corrupted and replicated to the second DAG, in which case you could roll back. You would have data loss, but at least you would have a recover point. From: Michael B. Smith [mailto:[email protected]]<mailto:[mailto:[email protected]]> Sent: Wednesday, September 28, 2011 5:00 PM To: MS-Exchange Admin Issues Subject: RE: Backup of Exchange 2010 Please elucidate. Regards, Michael B. Smith Consultant and Exchange MVP http://TheEssentialExchange.com From: Maglinger, Paul [mailto:[email protected]]<mailto:[mailto:[email protected]]> Sent: Wednesday, September 28, 2011 5:58 PM To: MS-Exchange Admin Issues Subject: RE: Backup of Exchange 2010 I was told to recover from a corrupt database. From: Michael B. Smith [mailto:[email protected]]<mailto:[mailto:[email protected]]> Sent: Wednesday, September 28, 2011 4:41 PM To: MS-Exchange Admin Issues Subject: RE: Backup of Exchange 2010 Why on earth would you want to lag a DB? Have you ever tried recovering from a lagged DB? Regards, Michael B. Smith Consultant and Exchange MVP http://TheEssentialExchange.com From: Jonathan Link [mailto:[email protected]]<mailto:[mailto:[email protected]]> Sent: Wednesday, September 28, 2011 5:13 PM To: MS-Exchange Admin Issues Subject: Re: Backup of Exchange 2010 Or can you have dbs offsite? And then can you lag those dbs? How frequent are those "oops, where'd that message go?" issues? And then, on average, how far back do you have to go? On Wed, Sep 28, 2011 at 4:55 PM, Steve Ens <[email protected]<mailto:[email protected]>> wrote: Do you have your databases at different sites? On Wed, Sep 28, 2011 at 3:46 PM, Joseph Heaton <[email protected]<mailto:[email protected]>> wrote: If I have my mailbox servers setup in a DAG, is the only reason to backup to disk/tape to cover the "oops, where'd that message go?" issues? If you do backup to disk/tape, what type of retention do you have? And, yes, I know the retention issue is extremely subjective, depending on legal requirements, etc. Just curious. --- To manage subscriptions click here: http://lyris.sunbelt-software.com/read/my_forums/ or send an email to [email protected]<mailto:[email protected]> with the body: unsubscribe exchangelist --- To manage subscriptions click here: http://lyris.sunbelt-software.com/read/my_forums/ or send an email to [email protected]<mailto:[email protected]> with the body: unsubscribe exchangelist --- To manage subscriptions click here: http://lyris.sunbelt-software.com/read/my_forums/ or send an email to [email protected]<mailto:[email protected]> with the body: unsubscribe exchangelist --- To manage subscriptions click here: http://lyris.sunbelt-software.com/read/my_forums/ or send an email to [email protected]<mailto:[email protected]> with the body: unsubscribe exchangelist --- To manage subscriptions click here: http://lyris.sunbelt-software.com/read/my_forums/ or send an email to [email protected]<mailto:[email protected]> with the body: unsubscribe exchangelist --- To manage subscriptions click here: http://lyris.sunbelt-software.com/read/my_forums/ or send an email to [email protected]<mailto:[email protected]> with the body: unsubscribe exchangelist --- To manage subscriptions click here: http://lyris.sunbelt-software.com/read/my_forums/ or send an email to [email protected]<mailto:[email protected]> with the body: unsubscribe exchangelist --- To manage subscriptions click here: http://lyris.sunbelt-software.com/read/my_forums/ or send an email to [email protected]<mailto:[email protected]> with the body: unsubscribe exchangelist ************************************************************************************************** Note: The information contained in this message may be privileged and confidential and protected from disclosure. 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