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Why are my Exchange backups so slow

  • December 9, 2021
  • 1 reply
  • 251 views

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I’m running my first Exchange backup and it is crawling. I have not changed anything because I don’t want to make it worse. Any ideas?

Best answer by Brian Bruno

Microsoft throttles their Azure Apps to ensure a consistent experience for all users. To improve performance and to minimize throttling, register multiple Azure apps.

 

For Exchange Online the recommendation is 5 Azure Apps for 5,000 mailboxes and every time an additional 1k mailboxes are added, register 1 additional app.

https://docs.metallic.io/metallic/93448_registering_exchange_online_with_azure_01.html

Commit your backup and restart and you should see a faster overall backup window.

1 reply

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  • Vaulter
  • Answer
  • December 9, 2021

Microsoft throttles their Azure Apps to ensure a consistent experience for all users. To improve performance and to minimize throttling, register multiple Azure apps.

 

For Exchange Online the recommendation is 5 Azure Apps for 5,000 mailboxes and every time an additional 1k mailboxes are added, register 1 additional app.

https://docs.metallic.io/metallic/93448_registering_exchange_online_with_azure_01.html

Commit your backup and restart and you should see a faster overall backup window.