@simatec 
Spoiler 
2023-04-05 02:00:13.590  - [34mdebug[39m: backitup.0 (20604) The local storage check was completed successfully. On the host "iobroker" are currently 2331897 MB free space available!
2023-04-05 02:00:18.156  - [34mdebug[39m: backitup.0 (20604) [iobroker/mount] done
2023-04-05 02:00:18.156  - [34mdebug[39m: backitup.0 (20604) Backup has started ...
2023-04-05 02:00:28.390  - [34mdebug[39m: backitup.0 (20604) [iobroker/iobroker] host.iobroker 26373 states saved
2023-04-05 02:00:48.999  - [34mdebug[39m: backitup.0 (20604) [iobroker/iobroker] host.iobroker 33764 objects saved
2023-04-05 02:01:02.912  - [34mdebug[39m: backitup.0 (20604) [iobroker/iobroker] Backup created: /opt/iobroker/backups/iobroker_2023_04_05-02_00_19_backupiobroker.tar.gz
2023-04-05 02:01:04.315  - [34mdebug[39m: backitup.0 (20604) [iobroker/iobroker] done
2023-04-05 02:01:05.089  - [34mdebug[39m: backitup.0 (20604) [iobroker/redis] Start Redis Backup ...
2023-04-05 02:01:05.362  - [34mdebug[39m: backitup.0 (20604) [iobroker/redis] Created redistmp directory
2023-04-05 02:01:25.435  - [34mdebug[39m: backitup.0 (20604) [iobroker/redis] Packed 0MB so far...
2023-04-05 02:01:35.685  - [34mdebug[39m: backitup.0 (20604) [iobroker/redis] Packed 6MB so far...
2023-04-05 02:01:45.693  - [34mdebug[39m: backitup.0 (20604) [iobroker/redis] Packed 13MB so far...
2023-04-05 02:01:55.694  - [34mdebug[39m: backitup.0 (20604) [iobroker/redis] Packed 69MB so far...
2023-04-05 02:02:05.695  - [34mdebug[39m: backitup.0 (20604) [iobroker/redis] Packed 119MB so far...
2023-04-05 02:02:15.701  - [34mdebug[39m: backitup.0 (20604) [iobroker/redis] Packed 173MB so far...
2023-04-05 02:02:19.445  - [34mdebug[39m: backitup.0 (20604) [iobroker/redis] Backup created: /opt/iobroker/backups/redis-remote_2023_04_05-02_01_05_backupiobroker.tar.gz
2023-04-05 02:02:19.447  - [34mdebug[39m: backitup.0 (20604) [iobroker/redis] Try deleting the redis tmp directory: "/opt/iobroker/backups/redistmp"
2023-04-05 02:02:19.539  - [34mdebug[39m: backitup.0 (20604) [iobroker/redis] redis tmp directory "/opt/iobroker/backups/redistmp" successfully deleted
2023-04-05 02:02:19.540  - [34mdebug[39m: backitup.0 (20604) [iobroker/redis] done
2023-04-05 02:02:19.844  - [34mdebug[39m: backitup.0 (20604) [iobroker/zigbee] found zigbee database: zigbee.0
2023-04-05 02:02:19.845  - [34mdebug[39m: backitup.0 (20604) [iobroker/zigbee] done
2023-04-05 02:02:20.146  - [34mdebug[39m: backitup.0 (20604) [iobroker/grafana] Start Grafana Backup ...
2023-04-05 02:02:20.148  - [34mdebug[39m: backitup.0 (20604) [iobroker/grafana] Created grafana_tmp directory: "/opt/iobroker/backups/grafana_tmp"
2023-04-05 02:02:20.150  - [34mdebug[39m: backitup.0 (20604) [iobroker/grafana] Created dashboard directory
2023-04-05 02:02:20.152  - [34mdebug[39m: backitup.0 (20604) [iobroker/grafana] Created dashboards_manually_restore directory
2023-04-05 02:02:20.155  - [34mdebug[39m: backitup.0 (20604) [iobroker/grafana] Created datasource directory
2023-04-05 02:02:20.156  - [34mdebug[39m: backitup.0 (20604) [iobroker/grafana] start Grafana request ...
2023-04-05 02:02:22.121  - [34mdebug[39m: backitup.0 (20604) [iobroker/grafana] Grafana is available ... Status: 200
2023-04-05 02:02:23.193  - [34mdebug[39m: backitup.0 (20604) [iobroker/grafana] found Dashboard: ***
2023-04-05 02:02:26.013  - [34mdebug[39m: backitup.0 (20604) [iobroker/grafana] start Grafana backup compress ...
2023-04-05 02:02:31.246  - [34mdebug[39m: backitup.0 (20604) [iobroker/grafana] Backup created: /opt/iobroker/backups/grafana_2023_04_05-02_02_26_backupiobroker.tar.gz
2023-04-05 02:02:31.247  - [34mdebug[39m: backitup.0 (20604) [iobroker/grafana] Try deleting the Grafana tmp directory: "/opt/iobroker/backups/grafana_tmp"
2023-04-05 02:02:31.304  - [34mdebug[39m: backitup.0 (20604) [iobroker/grafana] Grafana tmp directory "/opt/iobroker/backups/grafana_tmp" successfully deleted
2023-04-05 02:02:31.305  - [34mdebug[39m: backitup.0 (20604) [iobroker/grafana] done
2023-04-05 02:02:31.757  - [34mdebug[39m: backitup.0 (20604) [iobroker/javascripts] Created javascript_tmp directory: "/opt/iobroker/backups/tmpScripts"
2023-04-05 02:02:32.240  - [34mdebug[39m: backitup.0 (20604) [iobroker/javascripts] found Script: ***
2023-04-05 02:02:32.946  - [34mdebug[39m: backitup.0 (20604) [iobroker/javascripts] Try deleting the Javascript tmp directory: "/opt/iobroker/backups/tmpScripts"
2023-04-05 02:02:32.950  - [34mdebug[39m: backitup.0 (20604) [iobroker/javascripts] Javascript tmp directory "/opt/iobroker/backups/tmpScripts" successfully deleted
2023-04-05 02:02:32.951  - [34mdebug[39m: backitup.0 (20604) [iobroker/javascripts] Backup created: /opt/iobroker/backups/javascripts_2023_04_05-02_02_31_backupiobroker.tar.gz
2023-04-05 02:02:32.951  - [34mdebug[39m: backitup.0 (20604) [iobroker/javascripts] done
2023-04-05 02:02:33.712  - [34mdebug[39m: backitup.0 (20604) [iobroker/cifs] used copy path: /opt/backitup
2023-04-05 02:02:33.713  - [34mdebug[39m: backitup.0 (20604) [iobroker/cifs] Copy iobroker_2023_04_05-02_00_19_backupiobroker.tar.gz...
2023-04-05 02:02:34.225  - [34mdebug[39m: backitup.0 (20604) [iobroker/cifs] Copy redis-remote_2023_04_05-02_01_05_backupiobroker.tar.gz...
2023-04-05 02:02:37.967  - [34mdebug[39m: backitup.0 (20604) [iobroker/cifs] Copy zigbee.0_2023_04_05-02_02_19_backupiobroker.tar.gz...
2023-04-05 02:02:37.989  - [34mdebug[39m: backitup.0 (20604) [iobroker/cifs] Copy grafana_2023_04_05-02_02_26_backupiobroker.tar.gz...
2023-04-05 02:02:38.370  - [34mdebug[39m: backitup.0 (20604) [iobroker/cifs] Copy javascripts_2023_04_05-02_02_31_backupiobroker.tar.gz...
2023-04-05 02:02:38.643  - [34mdebug[39m: backitup.0 (20604) [iobroker/cifs] delete /opt/backitup/iobroker_2023_03_30-02_00_10_backupiobroker.tar.gz
2023-04-05 02:02:38.822  - [34mdebug[39m: backitup.0 (20604) [iobroker/cifs] delete /opt/backitup/redis-remote_2023_04_02-02_01_07_backupiobroker.tar.gz
2023-04-05 02:02:38.918  - [34mdebug[39m: backitup.0 (20604) [iobroker/cifs] delete /opt/backitup/redis-remote_2023_03_31-02_13_40_slave-1_backupiobroker.tar.gz
2023-04-05 02:02:38.940  - [34mdebug[39m: backitup.0 (20604) [iobroker/cifs] delete /opt/backitup/zigbee.0_2023_03_30-02_01_26_backupiobroker.tar.gz
2023-04-05 02:02:38.947  - [34mdebug[39m: backitup.0 (20604) [iobroker/cifs] delete /opt/backitup/grafana_2023_03_30-02_01_30_backupiobroker.tar.gz
2023-04-05 02:02:38.948  - [34mdebug[39m: backitup.0 (20604) [iobroker/cifs] delete /opt/backitup/javascripts_2023_03_30-02_01_35_backupiobroker.tar.gz
2023-04-05 02:02:38.951  - [34mdebug[39m: backitup.0 (20604) [iobroker/cifs] done
2023-04-05 02:02:39.555  - [34mdebug[39m: backitup.0 (20604) [iobroker/clean] done
2023-04-05 02:02:40.324  - [34mdebug[39m: backitup.0 (20604) [iobroker/telegram] [iobroker] used Telegram-Instance: telegram.0
2023-04-05 02:02:40.326  - [34mdebug[39m: backitup.0 (20604) [iobroker/telegram] done
2023-04-05 02:02:40.631  - [34mdebug[39m: backitup.0 (20604) [iobroker/historyHTML] new history html values created
2023-04-05 02:02:40.653  - [34mdebug[39m: backitup.0 (20604) [iobroker/historyHTML] done
2023-04-05 02:02:40.811  - [34mdebug[39m: backitup.0 (20604) [iobroker/historyJSON] new history json values created
2023-04-05 02:02:40.811  - [34mdebug[39m: backitup.0 (20604) [iobroker/historyJSON] done
2023-04-05 02:02:40.963  - [34mdebug[39m: backitup.0 (20604) [iobroker/umount] done
2023-04-05 02:02:41.136  - [34mdebug[39m: backitup.0 (20604) [iobroker] exec: done
2023-04-05 02:02:41.145  - [34mdebug[39m: backitup.0 (20604) Slave backup from Backitup-Master is started ...
2023-04-05 02:02:41.148  - [34mdebug[39m: backitup.0 (20604) Try to start backitup.1
2023-04-05 02:02:41.180  - [32minfo[39m: host.iobroker instance "system.adapter.backitup.1" enabled via .alive
2023-04-05 02:02:41.372  - [32minfo[39m: host.iobroker "system.adapter.backitup.1" enabled
2023-04-05 02:02:42.028  - [32minfo[39m: host.iobroker instance system.adapter.backitup.1 started with pid 23065
2023-04-05 02:02:44.148  - [34mdebug[39m: backitup.1 (23065) Redis Objects: Use Redis connection: 192.168.0.7:6379
2023-04-05 02:02:44.208  - [34mdebug[39m: backitup.1 (23065) Objects client ready ... initialize now
2023-04-05 02:02:44.212  - [34mdebug[39m: backitup.1 (23065) Objects create System PubSub Client
2023-04-05 02:02:44.214  - [34mdebug[39m: backitup.1 (23065) Objects create User PubSub Client
2023-04-05 02:02:44.402  - [34mdebug[39m: backitup.1 (23065) Objects client initialize lua scripts
2023-04-05 02:02:44.409  - [34mdebug[39m: backitup.1 (23065) Objects connected to redis: 192.168.0.7:6379
2023-04-05 02:02:44.442  - [34mdebug[39m: backitup.1 (23065) Redis States: Use Redis connection: 192.168.0.8:6379
2023-04-05 02:02:44.451  - [34mdebug[39m: backitup.1 (23065) States create System PubSub Client
2023-04-05 02:02:44.453  - [34mdebug[39m: backitup.1 (23065) States create User PubSub Client
2023-04-05 02:02:44.465  - [34mdebug[39m: backitup.1 (23065) States connected to redis: 192.168.0.8:6379
2023-04-05 02:02:44.527  - [34mdebug[39m: backitup.1 (23065) Plugin sentry Do not initialize Plugin (enabled=false)
2023-04-05 02:02:44.535  - [34mdebug[39m: backitup.1 (23065) Plugin sentry destroyed because not initialized correctly
2023-04-05 02:02:44.757  - [32minfo[39m: backitup.1 (23065) starting. Version 2.6.16 in /opt/iobroker/node_modules/iobroker.backitup, node: v18.15.0, js-controller: 4.0.24
2023-04-05 02:02:44.804  - [34mdebug[39m: backitup.1 (23065) Backitup has recognized a Docker system
2023-04-05 02:02:51.193  - [34mdebug[39m: backitup.1 (23065) Slave Backup started ...
2023-04-05 02:02:55.356  - [34mdebug[39m: backitup.1 (23065) Backup has started ...
2023-04-05 02:02:55.658  - [34mdebug[39m: backitup.1 (23065) [iobroker/influxDB] InfluxDB-Backup for influxDB-v2 is started ...
2023-04-05 02:02:55.662  - [34mdebug[39m: backitup.1 (23065) [iobroker/influxDB] Start InfluxDB Backup ...
2023-04-05 02:02:55.667  - [34mdebug[39m: backitup.1 (23065) [iobroker/influxDB] InfluxDB Backup tmp directory created
2023-04-05 02:11:37.015  - [34mdebug[39m: backitup.1 (23065) [iobroker/influxDB] Packed 68MB so far...
2023-04-05 02:11:47.002  - [34mdebug[39m: backitup.1 (23065) [iobroker/influxDB] Packed 142MB so far...
2023-04-05 02:11:57.007  - [34mdebug[39m: backitup.1 (23065) [iobroker/influxDB] Packed 222MB so far...
2023-04-05 02:12:07.005  - [34mdebug[39m: backitup.1 (23065) [iobroker/influxDB] Packed 300MB so far...
2023-04-05 02:12:17.004  - [34mdebug[39m: backitup.1 (23065) [iobroker/influxDB] Packed 376MB so far...
2023-04-05 02:12:27.007  - [34mdebug[39m: backitup.1 (23065) [iobroker/influxDB] Packed 444MB so far...
2023-04-05 02:12:37.003  - [34mdebug[39m: backitup.1 (23065) [iobroker/influxDB] Packed 522MB so far...
2023-04-05 02:12:47.003  - [34mdebug[39m: backitup.1 (23065) [iobroker/influxDB] Packed 601MB so far...
2023-04-05 02:12:57.002  - [34mdebug[39m: backitup.1 (23065) [iobroker/influxDB] Packed 672MB so far...
2023-04-05 02:13:07.023  - [34mdebug[39m: backitup.1 (23065) [iobroker/influxDB] Packed 734MB so far...
2023-04-05 02:13:17.019  - [34mdebug[39m: backitup.1 (23065) [iobroker/influxDB] Packed 808MB so far...
2023-04-05 02:13:27.020  - [34mdebug[39m: backitup.1 (23065) [iobroker/influxDB] Packed 867MB so far...
2023-04-05 02:13:31.357  - [34mdebug[39m: backitup.1 (23065) [iobroker/influxDB] Backup created: /opt/iobroker/backups/influxDB_2023_04_05-02_02_55_influxDB-v2_backupiobroker.tar.gz
2023-04-05 02:13:31.361  - [34mdebug[39m: backitup.1 (23065) [iobroker/influxDB] Try deleting the InfluxDB tmp directory: "/opt/iobroker/backups/influxDB_2023_04_05-02_02_55_influxDB-v2_backupiobroker"
2023-04-05 02:13:31.849  - [34mdebug[39m: backitup.1 (23065) [iobroker/influxDB] InfluxDB tmp directory "/opt/iobroker/backups/influxDB_2023_04_05-02_02_55_influxDB-v2_backupiobroker" successfully deleted
2023-04-05 02:13:31.850  - [34mdebug[39m: backitup.1 (23065) [iobroker/influxDB] InfluxDB-Backup for influxDB-v2 is finish
2023-04-05 02:13:31.852  - [34mdebug[39m: backitup.1 (23065) [iobroker/influxDB] done
2023-04-05 02:13:32.482  - [34mdebug[39m: backitup.1 (23065) [iobroker/redis] Start Redis Backup ...
2023-04-05 02:13:32.588  - [34mdebug[39m: backitup.1 (23065) [iobroker/redis] Created redistmp directory
2023-04-05 02:13:34.747  - [34mdebug[39m: backitup.1 (23065) [iobroker/redis] Backup created: /opt/iobroker/backups/redis-remote_2023_04_05-02_13_32_slave-1_backupiobroker.tar.gz
2023-04-05 02:13:34.748  - [34mdebug[39m: backitup.1 (23065) [iobroker/redis] Try deleting the redis tmp directory: "/opt/iobroker/backups/redistmp"
2023-04-05 02:13:34.755  - [34mdebug[39m: backitup.1 (23065) [iobroker/redis] redis tmp directory "/opt/iobroker/backups/redistmp" successfully deleted
2023-04-05 02:13:34.756  - [34mdebug[39m: backitup.1 (23065) [iobroker/redis] done
2023-04-05 02:13:36.561  - [34mdebug[39m: backitup.1 (23065) [iobroker/cifs] used copy path: /opt/backitup
2023-04-05 02:13:36.562  - [34mdebug[39m: backitup.1 (23065) [iobroker/cifs] Copy influxDB_2023_04_05-02_02_55_influxDB-v2_backupiobroker.tar.gz...
2023-04-05 02:14:02.578  - [34mdebug[39m: backitup.1 (23065) [iobroker/cifs] Copy redis-remote_2023_04_05-02_13_32_slave-1_backupiobroker.tar.gz...
2023-04-05 02:14:02.701  - [34mdebug[39m: backitup.1 (23065) [iobroker/cifs] done
2023-04-05 02:14:03.310  - [34mdebug[39m: backitup.1 (23065) [iobroker/clean] done
2023-04-05 02:14:04.468  - [34mdebug[39m: backitup.1 (23065) [iobroker/historyHTML] new history html values created
2023-04-05 02:14:04.479  - [34mdebug[39m: backitup.1 (23065) [iobroker/historyHTML] done
2023-04-05 02:14:04.640  - [34mdebug[39m: backitup.1 (23065) [iobroker/historyJSON] new history json values created
2023-04-05 02:14:04.641  - [34mdebug[39m: backitup.1 (23065) [iobroker/historyJSON] done
2023-04-05 02:14:04.943  - [34mdebug[39m: backitup.1 (23065) [iobroker] exec: done
2023-04-05 02:14:05.494  - [34mdebug[39m: backitup.0 (20604) Slave Backup from backitup.1 is finish with result: [EXIT] 0
2023-04-05 02:14:05.498  - [34mdebug[39m: backitup.0 (20604) backitup.1 is stopped after backup
2023-04-05 02:14:05.500  - [32minfo[39m: host.iobroker instance "system.adapter.backitup.1" disabled via .alive
2023-04-05 02:14:05.510  - [32minfo[39m: host.iobroker "system.adapter.backitup.1" disabled
2023-04-05 02:14:05.561  - [32minfo[39m: host.iobroker stopInstance system.adapter.backitup.1 (force=false, process=true)
2023-04-05 02:14:05.566  - [32minfo[39m: host.iobroker stopInstance system.adapter.backitup.1 send kill signal
2023-04-05 02:14:05.568  - [32minfo[39m: backitup.1 (23065) Got terminate signal TERMINATE_YOURSELF
2023-04-05 02:14:05.570  - [32minfo[39m: backitup.1 (23065) cleaned everything up...
2023-04-05 02:14:05.571  - [32minfo[39m: backitup.1 (23065) terminating
2023-04-05 02:14:05.572  - [32minfo[39m: backitup.1 (23065) Terminated (ADAPTER_REQUESTED_TERMINATION): Without reason
2023-04-05 02:14:06.309  - [32minfo[39m: host.iobroker instance system.adapter.backitup.1 terminated with code 11 (ADAPTER_REQUESTED_TERMINATION)
2023-04-05 02:14:09.528  - [34mdebug[39m: backitup.2 (31531) Slave Backup started ...
 
Nachdem ich alle drei Backitup-Instanzen auf Debug gestellt habe (sowohl die Instanzen selbst als auch den Haken innerhalb der jeweiligen Instanz-Konfiguration), läuft die zweite Slave-Instanz nicht mehr. Beim ersten Start kam diese Meldung:
2023-04-04 02:13:18.295  - [34mdebug[39m: backitup.0 (20604) Try to start backitup.2
2023-04-04 02:13:18.301  - [32minfo[39m: host.iobroker instance "system.adapter.backitup.2" enabled via .alive
2023-04-04 02:13:18.353  - [32minfo[39m: host.iobroker "system.adapter.backitup.2" enabled
2023-04-04 02:13:18.944  - [32minfo[39m: host.iobroker instance system.adapter.backitup.2 started with pid 31531
2023-04-04 02:13:26.556  - [34mdebug[39m: backitup.2 (31531) Redis Objects: Use Redis connection: 192.168.0.7:6379
2023-04-04 02:13:26.638  - [34mdebug[39m: backitup.2 (31531) Objects client ready ... initialize now
2023-04-04 02:13:26.643  - [34mdebug[39m: backitup.2 (31531) Objects create System PubSub Client
2023-04-04 02:13:26.645  - [34mdebug[39m: backitup.2 (31531) Objects create User PubSub Client
2023-04-04 02:13:26.841  - [34mdebug[39m: backitup.2 (31531) Objects client initialize lua scripts
2023-04-04 02:13:26.916  - [34mdebug[39m: backitup.2 (31531) Objects connected to redis: 192.168.0.7:6379
2023-04-04 02:13:26.950  - [34mdebug[39m: backitup.2 (31531) Redis States: Use Redis connection: 192.168.0.8:6379
2023-04-04 02:13:26.958  - [34mdebug[39m: backitup.2 (31531) States create System PubSub Client
2023-04-04 02:13:26.960  - [34mdebug[39m: backitup.2 (31531) States create User PubSub Client
2023-04-04 02:13:26.971  - [34mdebug[39m: backitup.2 (31531) States connected to redis: 192.168.0.8:6379
2023-04-04 02:13:27.039  - [34mdebug[39m: backitup.2 (31531) Plugin sentry Do not initialize Plugin (enabled=false)
2023-04-04 02:13:27.050  - [34mdebug[39m: backitup.2 (31531) Plugin sentry destroyed because not initialized correctly
2023-04-04 02:13:27.420  - [32minfo[39m: backitup.2 (31531) starting. Version 2.6.16 in /opt/iobroker/node_modules/iobroker.backitup, node: v18.15.0, js-controller: 4.0.24
2023-04-04 02:13:27.487  - [34mdebug[39m: backitup.2 (31531) Backitup has recognized a Docker system
2023-04-04 02:13:28.612  - [34mdebug[39m: backitup.2 (31531) Slave Backup started ...
2023-04-04 02:13:28.614  - [33mwarn[39m: backitup.2 (31531) backup error: SyntaxError: Unexpected token u in JSON at position 0 ... please check your config and try again!!
2023-04-04 02:13:34.141  - [33mwarn[39m: backitup.2 (31531) Backup error: TypeError: Cannot set properties of undefined (setting 'backupDir') ... please check your config and and try again!!
 
Hier noch der Screenshot der Influxdb-Dateien: