Home Exchange Server Exchange 2010 High Availability! Database Availability Groups CCR and SCR
Exchange 2010 High Availability! Database Availability Groups CCR and SCR PDF Print E-mail
Written by Siva   
Sunday, 31 October 2010 03:27

Exchange 2010 High Availability! Database Availability Groups CCR and SCR

 

Exchange 2010 now only supports one method for High Availability, and that's Database Availability Groups, or DAGs for short.

 

You can have upto 16 Servers in a DAG, and you aren't limited to just two copies of a database like you were with CCR - you can have 2+ or more copies if you so wish. Also all Mailbox Servers that are Members in a DAG don't necessarily have to have all databases log shipped over to each other.

 

Benefits of Database Availability Groups!

 

1. You now fail over at the MAILBOX LEVEL. This means you don't fail over an entire cluster anymore. Your Mailbox Server a little over utilized? Then move 1 or 2 Databases over to a lesser used Mailbox Server to stabilize resources.

 

2. You can have truly multiple copies of a Database! Technically with 3 or more copies you could use Circular Logging and enter into a Backupless state!

 

3. DAG Servers can stretch AD Sites! Making DR and HA one solution - without having the pain of having to have an SCR Target.

 

Play with DAG in the released Exchange 2010.

 
 

Advertisement

Featured Links:
HREmail.com
Looking for job? Try HREmail.com
Want to have CMS based Websites?
Try siliconwebcreators.com to CMS based websites.
VM Solutions Inc
For best VM solutions..
Digital Procedure Inc.
Looking for Oracle /SAP /Weblogic Consulting services? visit digitalprocedure.com