Retention of .dcm files in /var/dose/orthanc/dicom

[John Baines]

Good afternoon,

We are running OpenREM version 1.0.0b1 on an virtual server on Ubuntu 22.04.5 LTS

The Medical Physics department would like to retain the .dcm files that are stored in the 

/var/dose/orthanc/dicom path. The /var partition is 16GB on the live system. Currently the combined size of the .dcm files is 11GB. Therefore we have space issues as we only have 565MB left on the /var partition. 

We have created a new 200GB partition (to allow for 5 years worth of growth of the .dcm files) which is mounted as /mnt at present and our plan is to use rsync to move the data from /var/dose/orthanc/dicom to /mnt, then run some checks and then unmount /mnt and point fstab at the new /var/dose/orthanc/dose partition and mount.

In order to do this safely and to minimise any disruption we plan to do this at at quiet time of day when studies are not being sent to OpenREM. We will take a snapshot of the virtual server before starting the rsync copy. Is there and guidance on stopping and starting any OpenREM services please? Should we stop services before copying any data and then start following on from the completion of the rsync and mounting of the partition?

I'm also aware we can change the config in the /var/dose/orthanc/openrem_orthanc_config_linux.lua

namely this section...

-- Set this to the path where you want Orthanc to temporarily store DICOM files
local temp_path = '/var/dose/orthanc/dicom/'

Any guidance on the best practise to make this change to a live system will be greatly appreciated please.

Thanks,

John.