Forum Discussion
We have stated it for mixing disk and tape before (which OK tape is is a completely different process so perhaps more understandable)
GRT relies on mounting the image data for the complete backup chain to form a consistent result with incremental sets being added to the mounts of previous chain members back to the full so that we can the extract the individual files or folders inside the GRT set. You canot just mount the incremental set on it's own and this mount proces is used to generate both the catalogs (during the backup) and the restore opations
If you mix disk and dedup in an incremental chain, whilst the backup sets in both locations are valid the way the backup sets are mounted to get at the GRT is different and this potentially causes a problem when trying to join all the mounts in the chain together. Note I say potentially as we probably do need to check the facts with the developers which will have to take place as part of the handling of your technical support case.
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