We are currently investigating how to add a cloud tier to the Flex at our Disaster Recovery site.
Our plan is that, some business critical backup will be replicated from the Flex at the primary site, to the Flex at the DR site, from which it will duplicate to Azure cloud, where the backup will be kept for a very long period of 7+ years.
From what I read "About the Media Server Deduplication (MSDP) node cloud tier", the procedure of add a cloud tier is fairly straight forward.
However, I have been told (by our backup consultant) that, this method needs a dedicated cache serving as a landing zone, when it uploads the backup to the cloud, or downloads the backup from the cloud for restore.
The thing is, our MSDP is a WORM instance which has 100% storage space allocated to it, which means, there is no free space left on the storage.
So, my questions are
The WORM instance is fundamentally a storage server that is lack of services that a regular MSDP media server. So, cloud tiering (aka MSDP-C) is not supported within WORM instances.
You need to create a media server instance with MSDP that is at least 1017 GiB size to allocate cloud volumes.
You can log a case to support to shrink the existing capacity dedicated to WORM instance and free up the required space given above.