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Exchange Server CCR drive capacity management

Posted on 2013-06-23
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Last Modified: 2013-07-03
Hi guys,

In my current situation, my Exchange Server 2007 SP1 is using 2 drives to host 12 Storage Groups as follows:
1 TB LUN RAID 10 as Drive A:\
A:\SG1DB
A:\SG1LOGS
...
A:\SG5DB
A:\SG5LOGS

1 TB LUN RAID 10 as Drive B:\
B:\SG6DB
B:\SG6LOGS
...
B:\SG12DB
B:\SG12LOGS

As at the moment the A: drive is about to full with 75% disk is used while the B: drive is just barely under 50%, what are your suggestion to make it as balance as possible to avoid further issue ?
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Glen Knight earned 500 total points
ID: 39270453
There is no real hard and fast answer there.  The size of the databases are actually irrelevant as you could have a number of small mailboxes on there compared to the other volume that has a small amount of large mailboxes.

How much are the mailboxes used/accessed/amount of mail delivered comes in to it as well.

I tend to like to keep my groups of users together in their own database so that I can control them together.  So all large mailboxes in one store all small mailboxes in another store.

Most of my servers will have stores like:

Mailboxes Up to 2GB
Mailboxes Up to 6GB
Mailboxes Up to 10GB
Mailboxes over 10GB

This means I can set different policies easily for those users and if there is a requirement a mailbox can be moved to one of those stores to accommodate their need.

So, 20 2GB mailboxes (40GB) will use considerably less storage than 5 6GB Mailboxes (30GB) but the actual usage of the 6GB mailboxes could be less.

I guess, what I am trying to say.  If it works for you then there is no need to make any changes.  You may find the LUN that has 75% in doesn't grow much as the database has free space in it that is used first.  If it doesn't then maybe you could use mailbox policies to ensure it does?
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by:Senior IT System Engineer
ID: 39270514
hm... here's my mailbox statistics at the moment:

Server    StorageGroupName Name        MailboxesCount Size (GB)
------    ---------------- ----        -------------- ---------
PRODExc01 SGA              SGAMBX1                149 103.05   
PRODExc01 SGF              SGFMBX1                104 97.93    
PRODExc01 SGE              SGEMBX1                 84 113.67   
PRODExc01 SGH              SGHMBX1                 82 102.28   
PRODExc01 SGI              SGIMBX1                 82 126.26   
PRODExc01 SGB              SGBMBX1                 73 146.10   
PRODExc01 SGC              SGCMBX1                 68 114.80   
PRODExc01 SGJ              SGJMBX1                 68 100.69   
PRODExc01 SGG              SGGMBX1                 61 117.06   
PRODExc01 SGD              SGDMBX1                 58 107.83   
PRODExc01 SGJourn          SGJOURNMBX1              1 21.71    

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I guess based on your suggestion, I will need to do some mailbox migration
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LVL 74

Assisted Solution

by:Glen Knight
Glen Knight earned 500 total points
ID: 39270522
Potentiall yes, but like I said, Exchange organisations are all different and have different requirements.
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