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Journaling sizing
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Journaling sizing - 3.Jul.2008 12:45:08 PM
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skamionek
Posts: 7
Joined: 5.Dec.2006
Status: offline
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The company I work for has decided to use Postini for mail retention. I have found little on how to size up disk space requirements. I did find one paper that states 2 to 3 times the mail store size.
Any ideas or guidelines?
Steve
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RE: Journaling sizing - 3.Jul.2008 1:19:48 PM
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uemurad
Posts: 5321
Joined: 7.Jan.2004
From: California, USA
Status: online
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I would suggest that you consult Postini about that - especially if you are a new or potentially new customer. Have they not been helpful?
_____________________________
Regards,
Dean T. Uemura
Microsoft MVP - Exchange
exchangeguy.blogspot.com
uemurad@yahoo.com
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RE: Journaling sizing - 3.Jul.2008 10:22:02 PM
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secureemailplus
Posts: 6
Joined: 20.May2008
Status: offline
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Google's Message Discovery powered by Postini has no storage limitations, other than the rentention time purchased and company policy. Your journal storage is your choice.
_____________________________
Frank Muto
www.secureemailplus.com
Postini-Google Distributor
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RE: Journaling sizing - 7.Jul.2008 10:21:12 AM
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skamionek
Posts: 7
Joined: 5.Dec.2006
Status: offline
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We have not found anything concreate on sizing Exchange 2003 journaling. What I have read its 2 to 3 times your total mail size. Once you start I'm assuming that the Journal mailbox grows in size with each email message sent and recieved on that server. If that is true we will be out of disk space before we start. My simplified questions are:
1. MailStoreSize x ? = JournalSize
2. If Jouranling with X vendor does the total size get replicated every time or just initialy than and changes made after
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RE: Journaling sizing - 7.Jul.2008 10:41:36 AM
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uemurad
Posts: 5321
Joined: 7.Jan.2004
From: California, USA
Status: online
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There are a couple of points to understand.
First, Single Instance Storage is active for each Mailbox Store. In the simplest case where you have a single Mailbox Store, then the journal mailbox takes a very small amount of physical disk space because the message is already stored in the recipient's mailbox. However, that also means that if the recipent deletes the message, the journal mailbox will continue to hold the space, and therefore your Mailbox Store will never decrease in size.
Second, know that journal mailboxes are often used in conjuction with archival software, so that the messages are continuously removed after being archived. That reduces the space required for the mailbox.
If your journal mailbox is in a separate mailbox store from the recipient mailbox, then Exchange will store the entire message in each (one per store). If you have ten mailbox stores and a single 1MB message is addressed to mailboxes in each, then 1MB will be taken in each of the ten stores.
Are you using an archival software package?
_____________________________
Regards,
Dean T. Uemura
Microsoft MVP - Exchange
exchangeguy.blogspot.com
uemurad@yahoo.com
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RE: Journaling sizing - 7.Jul.2008 12:21:58 PM
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skamionek
Posts: 7
Joined: 5.Dec.2006
Status: offline
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Dean,
Thanks for the clarification. The powers at be just approved Postini. So how does that change what size it is? I'm going to assume that the size will be smalll as per your first option. I also guess there will be a big draw on bandwidth initialy once we now will be replicating with Postini.
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RE: Journaling sizing - 7.Jul.2008 1:11:16 PM
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uemurad
Posts: 5321
Joined: 7.Jan.2004
From: California, USA
Status: online
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I read through some of the Postini setup documentation. The journal mailbox should never get very big because you will be setting up server-based rules via Outlook and also a Mailbox Management policy.
Your bandwidth consumption will be higher because a duplicate of every message will be sent to Postini (even messages to and from internal users).
I'm not sure what you meant by "initially". This journaling/archiving function will only be performed on messages sent/received after you activate it. It won't retroactively archive messages already in mailboxes.
_____________________________
Regards,
Dean T. Uemura
Microsoft MVP - Exchange
exchangeguy.blogspot.com
uemurad@yahoo.com
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RE: Journaling sizing - 8.Jul.2008 11:32:55 AM
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skamionek
Posts: 7
Joined: 5.Dec.2006
Status: offline
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The initial mail would be the existing mail. The mail store is 30+GB would that get replicated ?
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RE: Journaling sizing - 8.Jul.2008 11:48:17 AM
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uemurad
Posts: 5321
Joined: 7.Jan.2004
From: California, USA
Status: online
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You'll have to read through the documentation to see if (and how) you can manually store messages from mailboxes into the archive. The setup instructions I read will only handle new messages, but I didn't read the entire document.
_____________________________
Regards,
Dean T. Uemura
Microsoft MVP - Exchange
exchangeguy.blogspot.com
uemurad@yahoo.com
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RE: Journaling sizing - 8.Jul.2008 12:17:29 PM
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uemurad
Posts: 5321
Joined: 7.Jan.2004
From: California, USA
Status: online
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Frank,
Thanks - I didn't catch the fact that you are associated with the product the first time you posted in the thread. I believe the original poster and I both found the documentation - my point was that I took a quick look to further the discussion, but that he should research the details of what he wants to do.
_____________________________
Regards,
Dean T. Uemura
Microsoft MVP - Exchange
exchangeguy.blogspot.com
uemurad@yahoo.com
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