Now that h1fw0 is stable, we are testing making h1fw1 stable by having it only write commissioning frames and not science frames. This is a temporary fix to support the current commissioning work where reliability is more important than redundency. The frequent restarts of h1fw1 (whose data is served by h1nds1 which is the default NDS) was causing commissioning issues due to data gaps and unavailability. Also note that we have not had any crashes of the framewriter OS or hardware, and so redundency is less of an issue outside of a science run.
After the 12:02 h1fw1 restart today it is now running the new configuration.
The current DAQ configuration is:
frame-writers
| name | science frames | commissioning frames | trends |
| h1fw0 | YES | NO | YES |
| h1fw1 | NO | YES | YES |
nds-servers
| name | serving | default NDS |
| h1nds0 | h1fw0 Commissioning frames* | NO |
| h1nds1 | h1fw1 Commissioning frames | YES |
* This is a mistake now that h1fw0 is not writing commissioning frames, needs a restart of h1nds0 to fix which could impact on Guardian nodes, so we are delaying this.