YogeshSLK
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DAG in exch 2010
Hello,
Is DAG dependent on some majority of nodes. If yes plese help me understand this.
Thanks
Sujith
Is DAG dependent on some majority of nodes. If yes plese help me understand this.
Thanks
Sujith
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If i have 6 mailbox servers and one witness server then at what point the DAG can fail ?
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Thanks for the assistance...
ASKER
What in case if i have 5 mailbos servers.... then you 2 can and still DAG will be working and in case 3rd fails DAG will fail...
ASKER
What in case if i have 5 mailbox servers.... then you mean to say 2 can fail and DAG will still be working and in case 3rd fails DAG will fail... Right ???
yes, just use the formula
x = the number of servers in the dag
(x-1) divided by 2
x = the number of servers in the dag
(x-1) divided by 2
ASKER
then iun that if i have 6 servers in DAG how that formula works ????
(6-1)/2 == 5/2=2.5 ????
(6-1)/2 == 5/2=2.5 ????
you can never have an even number
when there is an even number of mailbox servers then active manager adds a file share witness to make it an odd number
when there is an even number of mailbox servers then active manager adds a file share witness to make it an odd number
ASKER
Great... :)
DAG will need one Witness server & if on SP1 it has got secondary witness server option.
you will need to study from scratch to install DAG & design accordingly
may be below link you can start with
http://technet.microsoft.com/en-us/library/dd351172.aspx
http://technet.microsoft.com/en-us/library/dd979802.aspx
http://www.exchange-genie.com/2009/04/database-availability-group-dag-exchange-2010/
http://www.msexchange.org/articles_tutorials/exchange-server-2010/high-availability-recovery/uncovering-exchange-2010-database-availability-groups-dags-part2.html