[Linux-cluster] Rhcs4 split brain prolem with single heartbeat cable ?

[nattapon viroonsri]

>From config menu in Rhcs4 look like dont require share storage to store 
quorum partion and no ip tie-breaker to config.
And  i use only 1 network cable both for client access resource and 
heartbeat channel.
So  if one node have problem with network connection. the backup node can 
provide service with uninterrupt.
But Can split brain will occur ?
Can both node issue i/o to share at the same time ?

So hould i use 2 heartbeat channel ?
If i use 2 heartbeat connection how can i detect fail of network connection 
for client access resource ( no  ip tie-breaker to config in rhcs4) ?

Regard,
Nattapon

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