CAS-MBES scenarios in Microsoft 365

Last published : Apr 02, 2026
Review the following information that is related to CAS-MBES:
  • In a CASO environment, for the Forever Incremental, Consolidate Full, or Custom full backup jobs, you must only select a local deduplication storage device hosted on the server where you want to run the backup.
  • In a CASO environment, Microsoft 365 always uses distributed catalog mode irrespective of the selected mode during installation.
  • If an MBES creates a backup set and it is browsed from CAS, the detailed item information is not displayed and the backup set cannot be restored. You must run the restore job from the server where the backup job has run.
In a CASO environment, a backup set that is created by MBES and browsed from CAS does not display detailed item information and cannot be restored from CAS. You must run the restore job from the MBES where the backup job has run.
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