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vijaygoturFlag for India

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Exchange database

I have added new exchange 2010 server to DAG. I want replicate the databases.

The current active database is having whitespace of around 10Gb.

My question is
While replicating databases, is only mailboxes in the databases get replicated or  even      white space is also get replicated.
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Sanjay Santoki
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Hello,

As per me it should not replicate the white space within the database. Although, I didn't find any suitable article for the same.

Regards,
Sanjay Santoki
The actual database isn't replicated.
It replicates the logs and the content. Therefore if you have 10gb of white space, that content will not be replicated.
However another option would be to create a new database, add that to the DAG, then move the mailboxes in to the new database. That will leave the white space behind and also allow you to seed the second database in a more controlled manner.

Simon.
I'm sorry I don't agree to what is being answered above.

white space will get copied across.

Here is my logic. let me explain

10 AM Server 1 holds a database that has size of 100 GB
11  AM Users deleted 1GB of data.
This data gets written to log files (obviously)
Now, on Server 2 you start a reseed, that copies all the log files and a blank database.
ESE starts to commit all log files - this bloats the database to 100 GB
ESE also commits log files that has written information that 1 GB has got deleted
This brings over white space on Server 2 as well.

This also ensures that both database on both servers are in-sync.

Understand this in no Microsoft documentation has it mentioned that please do no use offline defrag, instead perform reseed and you'll be a happy guy. Once reseed is over on Server 2 - make the database active and reseed again on Server 1 - so database will shrink on both servers effortlessly. If this was a process - Microsoft would have written in with bold letters on technet, Alas this isn't a process defined until E2010 yet

Regards,
Exchange_Geek
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ASKER

Hi Exchange_Geek,

i am confused. What is the  final solution ?
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vicky19

The database is going to be the same on the passive that is on the active .... as when the database is re-seeded from Active to passive it simply copies the database and the logs.

White space is a part of Physical Database file and i havent seen that my DB of 200 GB has 40GB free space and if i would reseed the database file on Passive would be 160GB if so i wouldnt ever have the need to Defrag .. :)

Regards
There isn't a solution. You will get the white space on any database (along with obvious mailbox related details) that you are going to seed across.

Regards,
Exchange_Geek
Shall i required to run defrag on all active and passive db copies ?  or only on active copy is enough  and then reseed again.
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Exchange_Geek
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