Exchange 2013&2016&2019 attachments consult

Question

Exchange 2013&2016&2019 attachments consult

超邓 217

Hello HI Engineer,

  Excuse me, if the user uses Exchange 2013&2016&2019 to send 10MB attachments in batches, how does the Exchange store store them? Do you store one copy per mailbox? What is the algorithm for data size?

Also, is my transfer queue a 10MB for each mailbox? still?

Aaron Xue-MSFT 2,596 Reputation points Microsoft External Staff

2022-03-22T02:00:34.107+00:00

Hi @超邓 ,

Yes. Agree with andy. Because the single instance storage was removed from exchange 2010.

For example, If a user send a 10MB file to 10 mailboxes. Exchange would keep 10 copies of the message.

If the above suggestion helps, please click “Accept as answer” to mark helpful reply as an answer. Your action would be helpful to other users who encounter the same issue and read this thread.
超邓 217 Reputation points

2022-03-22T05:43:28.973+00:00

Thanks.

Accepted answer

0 additional answers

Your answer

Aaron Xue-MSFT 2,596 Reputation points Microsoft External Staff

2022-03-22T02:00:34.107+00:00

Hi @超邓 ,

Yes. Agree with andy. Because the single instance storage was removed from exchange 2010.

For example, If a user send a 10MB file to 10 mailboxes. Exchange would keep 10 copies of the message.

If the above suggestion helps, please click “Accept as answer” to mark helpful reply as an answer. Your action would be helpful to other users who encounter the same issue and read this thread.
超邓 217 Reputation points

2022-03-22T05:43:28.973+00:00

Thanks.

Answer 1

Andy David - MVP 158K MVP Volunteer Moderator

Attachments are stored per mailbox. Single Instance Storage disappeared in Exchange 2010:
https://techcommunity.microsoft.com/t5/exchange-team-blog/dude-where-s-my-single-instance/ba-p/595267

and yes, the queue will be 10MB per mailbox in your example.

Share via

Exchange 2013&2016&2019 attachments consult

0 additional answers

Your answer