You can find FARM_HASH in the web interface of your farm in the "Settings" section. Using it you can easily add rigs in bulk without creating rigs on the web and getting RIG_ID. Hash is unique for each farm.
Write Hive image as usual to your Flash/SSD. After the write you’ll find HIVE disk in Windows. It holds Hive config files, there is
rig-config-example.txt in there. Open it, edit and save as
# Find out your hash in farm's settings on the web
# The rig will autoregister itself in your account after the first run
FARM_HASH=your farm hash goes here
# Password used for the rig
# If you know rig id before creation you can set it here leaving FARM_HASH blank
# If you use FARM_HASH you can optionally name your rig otherwise the name will be autogenerated
Put your Farm Hash, copy the value from the web:
No need to set RIG_ID or RIG_PASSWD.
That’s it, just to set the value in
rig.conf. Now boot your rig and it will connect to web automatically.
FARM_HASH can be effectively used with Hive Flasher for bulk rig installations. More details here.
ASICs can be installed in bulk just by connecting via SSH and using FARM_HASH. More details here.