Hi Edward,

TrendMiner requires 2 volumes: a root volume (/) and a data volume (/mnt/data).

Minimal requirement for the root volume (the OS disk) is 10GB, so it looks indeed like your root volume is over-provisioned.

Minimal requirement for the data volume is 200GB+300GB. The reason we note it down as 200GB+300GB is because our virtual appliance deployment only recognizes 200GB initially and the disk needs to be extended with an extra 300GB after initial deployment. This only applies for our virtual deployment option. Single node deployments can provision a 500GB disk from the start.

Since you use only 109GB of the data storage you could consider downscaling it but please keep in mind the required disk space will keep increasing as time continues and more tags are used. So if you reduce it now you will likely need to extend it again later on.

How much disk space you need per tag per year can be calculated more or less as explained on this page: https://documentation.trendminer.com/en/diagnostics-134908.html

Also keep in mind that some of the free disk space on the data volume is required for successful upgrades: it is only used during an upgrade and freed up again after the upgrade. If you do not have sufficient free disk space upgrades might start failing.

Now, the hard part is that it is not so easy to scale down the disk space.

In case you want to scale down the disk size we would strongly recommend setting up a new server and use the remote backup-restore functionality to transfer the TrendMiner data.

TLDR: 64GB for OS would still be over-provisioned (10GB is enough) but 200GB for storage is on the low side taking into account future increase in storage space and would not be recommended (nor supported in case you run into issues).