DRBD options 11.. SSeettttiinnggss ffoorr MMaasstteerr aanndd SSllaavvee 11..11.. NNooddee Don't use domain names here, only the hostnames as reported by hostname -s 11..22.. IIPP ((ooppttiioonnaall)) If you have machines with multiple NICs, you may want to specify the interface by its IP address here. If you machines only have one NIC do not set these. 11..33.. PPoorrtt Default value: 7788 11..44.. DDeevviiccee Devices used in master and slave (may be different on each machine) 11..55.. PPaarrttiittiioonn Partitions for DRBD (can be a different partition on each machine) 22.. OOtthheerr pprrooppeerrttiieess 22..11.. TTiimmeeoouutt If communication blocks for 'N' * 1/10 seconds, DRBD falls back into unconnected operation. If this field is left blank the internal DRBD default will be used instead. 22..22.. SSyynncc rraattee The synchronisations sends up to 'N' KB per sec. If this field is left blank the internal DRBD default will be used instead. 22..33.. TTrraannssffeerr lloogg ssiizzee Sets the size of the transfer log(=TL). The TL is is used for dependency analysis. For long latency high bandwith links it might be necessary to set the size bigger than 256. You will see error messages in the system log if the TL is too small. If this field is left blank the internal DRBD default will be used instead. 22..44.. DDiisskk ssiizzee Sets drbd's size. When set to 0 drbd negotiates the size with the remote node. A value different from 0 will allow drbd to operate even without a connection to the other node. Make sure sizes match! If this field is left blank the internal DRBD default will be used instead. 22..55.. SSkkiipp ssyynncchhrroonniizzaattiioonn Instruct DRBD not to do synchronisation. 22..66.. EEnnaabbllee kkeerrnneell ppaanniicc DRBD will trigger a kernel panic if there is an IO error on the lower_device. May be usefull when DRBD is used in a HA cluster. 22..77.. UUssee pprroottooccooll Protocol used for this device Protocol may be A, B or C.