One 2mb attachment sent to 25 users - stored once or 25 times?

[Cat1]

I have a quickie question re: exchange....

if one user sends out an email with a 2MB attachment to 25 other users in the same company/exchange store - is that attachment saved once inside exchange, or is it multiplied 25 times - so taking up 50MB of space???

 

[mtb1996]

I can't say this for sure, but my assumption would be that each of the 25 recipients receive a complete copy of the message in their inbox... attachments and all. So yeah, 50 MB.

Again, this is just my guess based upon my understanding of message delivery in Exch2K.

 

[Zelandakh]

Exchange is a single instance store. The attachment is saved once to the store. 2MB. Pointers are created in the store to the attachment so that each person can access it.

Therefore a store level backup will increase by 2MB. A brick level (backup exec etc) backup will rise by 50MB as the same attachment will be backed up 25 times.

<signature for rent>

 

[mtb1996]

Hey Cat1... look at that! I was wrong, and a good thing too! Like I said, I was just guessing.