Circular loging

Switching CCR Storage Groups into Circular Logging during Migration - and why you might want to do this…

De la pagina Telnetport25, (jajaj muy bueno el nombre), estos muchachos subieron un script muy bueno q habilita CL en forma automatica, claro q esto implica montar y desmontar las bases de datos, este script lo hace en forma automatica.

La mala noticia es q para exchange2007 CCR cluster esto no es suficiente, tenemos q reinicia el servicio de MSExchangeIS o hacer un Fail Over.

http://www.telnetport25.com/component/content/article/16-exchange-2007-ccr/318-switching-ccr-storage-groups-into-circular-logging-during-migration-and-why-you-might-want-to-do-this.html

Esto es lo q dice MS con respecto a CL, ya es voz populi:

n the release to manufacturing (RTM) version of Exchange 2007, combining circular logging with cluster continuous replication (CCR) or local continuous replication (LCR) is supported. However, we do not recommend this because it does not allow a roll-forward recovery after a backup has been restored. Exchange 2007 Service Pack 1 (SP1) also allows storage groups in a CCR, LCR or standby continuous replication (SCR) environment to have circular logging enabled. However, this practice is also not recommended for the reason indicated previously. When enabled in either of these environments, the functionality is CRCL and not ESE circular logging (also known as Joint Engine Technology (JET) circular logging). In a CCR, LCR, or SCR environment, you should always use the following process to enable or disable circular logging:

1. Suspend continuous replication by using the Suspend-StorageGroupCopy cmdlet.
   
2. Enable or disable circular logging. For detailed steps about how to enable or disable circular logging, see How to Enable or Disable Circular Logging for a Storage Group.
   
3. Dismount and then mount the database in the storage group that is being enabled or disabled for circular logging.
   
4. Resume continuous replication by using the Resume-StorageGroupCopy cmdlet.

http://technet.microsoft.com/en-us/library/bb331951%28EXCHG.80%29.aspx

Esto ultimo no es tan asi por mi comentario anterior.