Hmm... ok. Well, guess there are only so many options there. Is a 20MB mailbox limit really necessary in this environment? IIRC SBS2003 is now capable of ~=1GB per user max limits on average.
-- Chris Scharff Messaging Services Architect MessageOne 512.652.4500 EMS Email Continuity: Exchange may be down, but e-mail is still up. http://www.messageone.com/email-continuity/ -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Ian Batty Posted At: Monday, February 13, 2006 10:02 AM Posted To: swynk Conversation: Mailbox size and the Single Instance Store Subject: RE: Mailbox size and the Single Instance Store SBS migration using www.sbsmigration.com 'Swing Migration' method. Exchange store forklift was not a good option because the existing store was not trustworthy! Ian Ian Batty Senior Support Engineer www.exploreit.uk.com -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Chris Scharff Sent: 13 February 2006 15:45 To: Exchange Discussions Subject: RE: Mailbox size and the Single Instance Store I try not to think about PST files if I don't have to.... but I think you're still barking up the wrong tree. The problem is not with how Exchange stores data, but how PST files store data. For RTF messages, the PST file is going to contain 2 copies of a message. There are a number of other inefficiencies in PST files. What was the reason for the exmerge based migration? -- Chris Scharff Messaging Services Architect MessageOne 512.652.4500 EMS Email Continuity: Exchange may be down, but e-mail is still up. http://www.messageone.com/email-continuity/ -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Ian Batty Posted At: Monday, February 13, 2006 9:09 AM Posted To: swynk Conversation: Mailbox size and the Single Instance Store Subject: RE: Mailbox size and the Single Instance Store OK, so I am barking up the wrong tree by saying that the increase in size of individual mailboxes is due to the loss of SIS it is more to do with the way that Exchange stores the data? How does this explain why some mailboxes have grown very little and others grown massively? I don't think they have the NDR/read reciepts problem you mention. I have the users with the massively bloated mailboxes wondering how they can reduce their mailboxes again and 'what they did wrong' over someone else whose mailboxe grew ny only 10% or so!! Thanks! Ian Ian Batty Senior Support Engineer www.exploreit.uk.com -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Chris Scharff Sent: 13 February 2006 14:51 To: Exchange Discussions Subject: RE: Mailbox size and the Single Instance Store Exchange counts an instance of a message against everyone who has a copy in their mailbox when computing limits. I've seen up to 60x growth when exmerging data out in the past, so 7x growth doesn't seem all that unreasonable to me. It's a very strong part of the argument that storing data in PST files not only loses SIS requiring more space, but that the actual data itself can bloat tremendously. In my 60x growth scenario it was because the mailbox contained thousands of NDRs, delivery and read receipts. Exchange stores these relatively efficiently, but when exported the form definition needs to be attached to each of the items in the resulting PST file. That form definition is much larger than the message stored in Exchange, so things get very large very quickly. -- Chris Scharff Messaging Services Architect MessageOne 512.652.4500 EMS Email Continuity: Exchange may be down, but e-mail is still up. http://www.messageone.com/email-continuity/ -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Ian Batty Posted At: Monday, February 13, 2006 8:36 AM Posted To: swynk Conversation: Mailbox size and the Single Instance Store Subject: Mailbox size and the Single Instance Store Please can anyone point me to a resource to explain this? We have a client and have just migrated them to a new Exchange Database by ExMerge. The users were told to reduce their mailboxes to under 20MB and the warning message limit was set to that level. All users succeeded in reducing their mailbox to < 20MB, the warnings stopped and checking in Exchange Manager showed all mailboxes < 20MB. When we ExMerged the data I fully expected some of the PSTs to be bigger than 20MB, but was quite surprised to find that some were up to 140MB. I am wondering whose mailbox a message 'counts against' if it is sent to more than one internal user. Does it count against the sender? If the sender then deletes the sent message whose allowance does it count against then?! Confused!?! I am. Ian Ian Batty Senior Support Engineer www.exploreit.uk.com _________________________________________________________________ List posting FAQ: http://www.swinc.com/resource/exch_faq.htm Web Interface: http://intm-dl.sparklist.com/read/?forum=exchange To subscribe: http://e-newsletters.internet.com/discussionlists.html/ To unsubscribe send a blank email to [EMAIL PROTECTED] Exchange List admin: [EMAIL PROTECTED] To unsubscribe via postal mail, please contact us at: Jupitermedia Corp. 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