Enhance Backup of Large Microsoft 365 Data

When it comes to ingesting Microsoft 365 data, the size can vary from hundreds of terabytes (TBs) to a few petabytes (PBs) in some cases. One of the issues that may arise while performing the initial full backup of such large data is throttling from the Microsoft 365 APIs.

Cohesity recommends using only one application ID for Microsoft 365 backups. However, when you back up a large amount of data, using only one application ID may result in a prolonged ETA for the first full backup. Contact your Cohesity account team to determine the appropriate number of application IDs to optimize the performance while ensuring that the Microsoft Tenant Level Throttling limits are not exceeded, which may cause service failures for Microsoft 365.

After completing the first full backup, using multiple application IDs is not usually required. However, in certain situations, a single application ID may be inadequate. For guidance on the appropriate number of application IDs for incremental backups following the initial full backup, Contact your Cohesity account team.

Cohesity also supports Microsoft paid APIs to perform the first full backups faster. These APIs come with higher limits, ensuring the backups are performed faster at a higher API rate. The paid APIs are configured to be used in addition to the existing backup capacity allocated by Microsoft, rather than as a substitute, to help minimize additional costs.