Reclaiming iSCSI LUN space after deletion.

- Enable SSH service via the Terminal & SNMP tool in the Control Panel.
- Log into the Synology as user "root" using the appropriate password.
- Confirm there are no iSCSI LUNs in Storage Manager.
- Stop the iSCSI service:
/usr/syno/etc/rc.d/S78iscsitrg.sh stop
- Remove the folder /volume1/@EP and /volume1/@EP_trash
- Remove the file /var/db/iscsi/EP_JNL
- Start the iSCSI service again:
/usr/syno/etc/rc.d/S78iscsitrg.sh start
- Log out of the Synology.

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