Two login iscsci disk

I have configured two iscsi disks on a single Ubuntu 18.04 server as server backup. The iscsi is setup with tgt and open-iscsi. I want to locally access these iscsi disks on the Ubuntu machine (i.e., server 192.168.2.x plus 127.0.0.1) so can copy these backups to an off-site location.

Currently I've configured two targets for each drive (local and server).

It seems iscsi is one-to-one protocol. I want to make the local connection read-only. Is this generally not advisable and likely to cause problems?

I am just trying to avoid having to make multiple logins for the final process of copying the backups.

Thanks for suggestions.

iscsi is a very good at some things and poor at others. You don't really want to have more than one user connected to a disk at one time. It may be possible to attach it to some system and then use nfs or samba to use concurrent transactions.

Thanks. This seems to be about handling the hardware. Then a seperate application is needed to manage read-write etc.