Hi Pedro,

first of all: Which version of SLE HA are you using? You linked the SLE 11SP4 docs, is that your actual version?

AFAIR, SLES does not support quorum disks. I you really want a (cheap) tie-breaker, set up an additional cluster node on old/cheap/easy hardware and set that node to "standby". No resources would ever be run on that node, but it will take part in the quorum process. If it drops out (i.e. because of hardware failure), no harm is done - the remaining two nodes still have quorum and you can replace the failed node with the next cheapo machine