Azure blob storage connection issue

benjamin.golinvaux · April 25, 2023, 1:58pm

Hi Avijit,

Just in case this wasn’t clear : object storage and blob storage are synonyms.

If the Hybrid mode is disabled, only the Azure Blob storage will be used, and the plugin will neither write or read from the file system.

HTH

alainmazy · April 25, 2023, 4:53pm

Hi Avijit,

Are you doing a migration ? If not, don’t worry about HybridMode and leave it to disabled.

BR,

Alain

Avijit · April 26, 2023, 5:19am

Hi Alain and Benjamin,

Thank you both for helping me, I truly appreciate it.

I have a server space issue and the studies that will come will be numerous and large in size, so I chose the Azure blob storage plugin. I just want to save all the studies in Azure blob storage only. Write and Read only from the storage. What i have to do here…??

At the moment, studies have been saved in both the file system and object storage.

Regards,
Avijit

benjamin.golinvaux · April 27, 2023, 8:41am

Hi Avijit,

As mentioned by Alain, if HybridMode is disabled, the studies should only be written to Azure.
I really can’t think of any other reason why studies would be written at both locations!

Please note that you need to restart Orthanc for configuration changes to be taken into account.

Good luck

Avijit · May 2, 2023, 11:14am

Hi,

I require your assistance. I wanted to download studies from Azure Blob Storage to my file system, thus I followed the instructions in the following article:-

I have a few questions:

Could you please tell me where I can find or obtain “Resources”: [“XXXXXXXX”],`
How I will define "TargetStorage":

Thanks,
Avijit

Harin · May 2, 2023, 2:22pm

Dear Alain and Benjamin you both have been great help.

Avijit is trying to connect azure blob storage, which he has successfully completed with your help.

Currently we are sending echocardiography images/video loops from individual hospital echo machine to local orthanc server. From here we are exporting to central orthanc server into respective docker for the hospital.

We are successfully able to import and export studies between these 2 servers. But due to large volume of data, we want to connect azur blob storage to our central orthanc server with dockers.

We now want to send studies to blob storage from local server via central server. We need to figure out how to send studies to blob storage as a file or folder and how to fetch this study back to local server via central server.

We are currently stuck and Avijit has tried different permutations and combinations, I feel we are missing something here.

We need to figure out how to send studies to blob storage where it can be identified and retrieved.

I thank you in advance for your help and support.

Regards
Dr Vyas

Avijit · May 5, 2023, 10:03am

Hi Sébastien,

Alain and and Benjamin were very helpful, but I still have a problem. Can you please help me in this matter?

Thanks,
Avijit

alainmazy · May 8, 2023, 10:27am

Hi Avijit and Harin,

We have been trying to help but you also need to help as well by reading the answers, reading the documentation and describing your problem clearly.

As an example, in your last message, you have the answer to your second question:

The Resources are the Orthanc ids that are used everywhere in the API.

Best regards,

Alain

Avijit · May 10, 2023, 2:52pm

Hi Alain,

Thank you for your response.

I uploaded one study to blob storage and I want to retrieve it from object storage to the file system using Moving files between file-system and object-storage, but I cannot identify the resource ID in the uploaded study. Could you please tell me how to identify it?

And still, when I upload a study using Orthanc’s uploads option, it is saved in both the file system and the object storage. How can I only keep it in object storage?

Thanks,
Avijit

alainmazy · May 11, 2023, 2:33pm

Hi Avijit,

The resource id is the study id. Once you upload a file to Orthanc on the /instances route, you get this kind of response:

{
   "ID" : "0ddcdc72-3076fe78-355e45e1-7f68db04-98b6aeb2",
   "ParentPatient" : "dbe66cfb-c45452e9-38c302ed-e957f20f-959d0e48",
   "ParentSeries" : "05f762ac-72d3d82f-b7132c65-856a2b0f-36fd553e",
   "ParentStudy" : "8749b52b-78ed6a2c-33064f1c-3e9f3fcf-e2cc2eda",
   "Path" : "/instances/0ddcdc72-3076fe78-355e45e1-7f68db04-98b6aeb2",
   "Status" : "Success"
}

The study id is the "ParentStudy".

For your duplication issue, what makes you think that the files are duplicated ?

I started a clean install with "HybridMode": "WriteToObjectStorage" and uploaded a single file.
I can see that the file is in the object storage:

And not on the file system in the container where I only have the SQLite files:

Then, after I move it to the file system, I do see it in my container file system:

And there’s no files left in the object-storage:

Best regards,

Alain