Database mailbox grow quickly Exchange 2010 SP3

Question

Hello.
Since we migrated from Exchange 2003 to
2010, the growth of our databse mailbox
is excessive. We have a total mailbox
size hovering around 75 GB and the size of
the database is 120 Gb.
Mailbox quotas are very
limited and 90% of users move emails
from mailbox to PST personal folders.
I get the impression that the space freed by removing
emails or move them to PST
is not claimed as White Space
and hence the excessive growth of
the DB.
I have seen that there is a fix to solve this
problem for versions prior to Exchange 2010
SP3 but the current version we have
implemented and it is with SP3.
Any idea to find out what is happening and
how to fix it?
Thanks in advance and best regards.
tzariksi

Answer 1

Hi.
I have reviewed the total size the mailboxes
and Dumpster with the following command:
Get-MailboxDatabase"MailboxDatabase"|Get-MailboxStatistics|SortTotalItemSize-desc|ftdisplayname,TotalItemSize,itemcount,TotalDeletedItemSize
The result is:
•Total Mailbox size(GB)->82,213
•Total Dumpster size(GB)->14,531
•Total ->97,344
The size of the DB using the command:
Get-MailboxDatabase-Status|Sort-ObjectDatabaseSize-Descending|Format-Table
Name,DatabaseSize,AvailableNewMailboxSpace
Is as follows:
Name                                   
DatabaseSize                            AvailableNewMailboxSpace
MailboxDatabase         107.4 GB (115,302,531,072 bytes)        1.438 GB (1,544,486,912 bytes)
The actual disk size occupied
by the MailboxDatabase is->112GB
What else may be using the space in theMailboxDatabase?.
Thanks and regards.
Pedro.
tzariksi