How to backup solr collection

Hello Solr experts,

I am new to solr and have a lot to learn, but I have been tasked with writing a backup and restore demo. I have a question regarding the location of the backup when taking a backup.

In my address box I have the following URL to get my backup started...

http://IPADDRESS:8983/solr/#/collections?action=BACKUP&name=test_catalog&location=

...so the documentation says I should back up to a shared drive, but shared drive where? Is the shared drive on the zookeeper, or on my local machine? If on the zookeeper, do I need to create a backup directory first? And if on my local machine, what do I need to type in?

I am also interested to know if it is possible to backup to an Azure blob?

What is the difference between the location and repository?

I would really appreciate any guidance, there appears to be no step by step on the internet (hard to believe I know), but if there is I cannot find it. If I end up creating one from help received here, I will be only too happy to share it to the greater community.

Thank you.

Kind Regards,

Paul.