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Retrieving White Space in Exchange 2010 databases.

Retrieving White Space in Exchange 2010 databases.

I am running this command to see the white space for each database:

Get-MailboxDatabase -Status | Select-Object Server,Name,AvailableNewMailboxSpace

Server Name AvailableNewMailboxSpace
------ ---- ------------------------
Server1 DB1 31.51 GB (33,828,405,248 bytes)
Server1 DB2 195 MB (204,505,088 bytes)
Server2 DB3 2.957 GB (3,174,760,448 bytes)
Server3 DB4 62.31 MB (65,339,392 bytes)
Server3 DB5 114.3 GB (122,684,506,112 bytes)

I wonder if AvailableNewMailboxSpace means the size take by white space?
for instance DB5 show 114.3GB of White Space, but when I run:
Get-MailboxDatabase -Status | select ServerName,Name,DatabaseSize
it shows:
Server3 DB5 114.3 GB (122,684,506,112 bytes)

what does that mean ?

Any help will be very much appreciated.

Thank you.

SOLUTION

getzjd

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jskfan

ASKER

I ran this command against 16 Mailbox database and the out is blank for all of them.
does that mean there is no white space. I know that there is an online defrag that occurs every day, but does that mean there is no white space at all, since users happen to delete emails during the day.

Get-MailboxDatabase DBname | select name,availablenewmailboxspace

Name AvailableNewMailboxSpace
---- ------------------------
DBname

jskfan

ASKER

just saw this part :
ESEUTIL /MS

I cannot dismount a Database just to check the white space, that s production..

jskfan

ASKER

And I wonder if Dismounting a database is a simple process.
just run one command : Dismount-database databasename.

Or I have to go through other command lines to put the server in maintenance mode and other commands after the server is brought back out of maintenance mode.

The reason I am asking, is because recently, I had to reboot one of the Exchange 2010 nodes which is memeber of a DAG, and had to go through a lot of commands.

getzjd

What does this command yield?

Get-MailboxDatabase -Status | ft name, availablenewmailboxspace,databasesize –AutoSize

ASKER CERTIFIED SOLUTION

Vijaya Babu Sekar

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jskfan

ASKER

This command will give the White space of a specified database:

Get-MailboxDatabase -identity databasename -Status | Select Servername, Name, AvailableNewMailboxSpace

jskfan

ASKER

For instance , I have a database that has one mailbox inside about 32MB size. I wonder how could that be over 114GB of White space:

ServerName                              Name                                    AvailableNewMailboxSpace
----------                              ----                                    ------------------------
ExchangeMB1                           MBdatabase8                                   114.2 GB (122,595,180,544 bytes)


Get-MailboxDatabase -identity MBdatabase8 -Status | select ServerName,Name,DatabaseSize

ServerName                              Name                                                DatabaseSize
----------                              ----                                    ------------
ExchangeMB1                           MBdatabase8                                   114.3 GB (122,684,506,112 bytes)


Get-MailboxStatistics -database MBdatabase8 | ft displayname,Totalitemsize,itemcount,storagelimitstat
us

DisplayName                   TotalItemSize                             ItemCount           StorageLimitStatus
-----------                   -------------                                     ---------            ------------------
John Smith                 31.39 MB (32,918,387 bytes)             373                    NoChecking
SystemMailbox{e06250a3-aa0... 318 B (318 bytes)                1                    NoChecking

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jskfan

ASKER

Thanks