Question about cluster node majority voting

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we've been having problems db instance crashing regularly.  weekend when crashed, seems have taken node on it, or separate incident...

right have 3 nodes in cluster.  2 nodes running 3 instances (2 on 1). 3rd node in state os unusable , cluster service not start. 

event log:

"the failover cluster database not unloaded. if restarting cluster service not fix problem, please restart machine."

cluster log machine:

00003768.000067a0::2014/01/06-03:28:05.393 info  -----------------------------+ log begin +-----------------------------
00003768.000067a0::2014/01/06-03:28:05.393 info  [cs] starting clussvc service
00003768.000067a0::2014/01/06-03:28:05.394 info  [cs] cluster service logging level 2
00003768.00004c30::2014/01/06-03:28:05.521 dbg   [netftapi] received nsiinitialnotification
00003768.00004c30::2014/01/06-03:28:05.523 dbg   [netftapi] received nsiinitialnotification
00003768.000031f4::2014/01/06-03:28:05.588 dbg   [netftapi] received nsiaddinstance  169.254.3.47
00003768.00004eb4::2014/01/06-03:28:05.590 err   [dm] error while restoring (refreshing) hive: status_invalid_parameter(c000000d
00003768.00004eb4::2014/01/06-03:28:05.592 err   [dm] mscs::dmagent::start: status_invalid_parameter(c000000d' because of 'load(nothrow(), securityattributes, discarderror )'
00003768.00004eb4::2014/01/06-03:28:05.592 err   [dm] node 3: failed unload cluster hive, error 87.
00003768.00004eb4::2014/01/06-03:28:05.592 err   hive unload failed (status = 87)
00003768.00004eb4::2014/01/06-03:28:05.592 err   fatalerror calling exit process.

this 3 node cluster set node majority, don't have available drive letter witness disk.  since cluster service won't start, i'm not how cluster still running, thankful is.

a reboot might fix everything, i'm worried if reboot server, , cluster service still fails start... may prevent entire cluster starting , won't able run instances on other 2 nodes.

does 3rd server still act odd-number server, if cluster service won't start?  if reboot , cluster service still fails start, cluster able in state , run db instances on other nodes?

i need open ms support incident on db instance crashing, i'd rather not have open 2nd 1 answer simple question.

i know if reboot server, cluster stop because there 2 nodes in majority node setup.  concern if cluster service not start after reboot, cluster remain down. guessing because node voting has occurred , things running, it's staying up?  i'd think cluster service being down on 1 of 3 nodes, cluster should down... it's not  /phew!!

thanks in advance!

mark

node majority says nodes have votes.  have 2 of 3 nodes available - hence have quorum. 

"does 3rd server still act odd-number server, if cluster service won't start?"  without cluster service running, node not participating in manner in cluster, not acting cluster node @ all.

you don't need drive letter witness disk.  never use drive letter witness disk.

"i know if reboot server, cluster stop because there 2 nodes in majority node setup."  again, if cluster service not running on third node, not providing vote.  if have node majority defined quorum model, the two running nodes make quorum. 

.:|:.:|:. tim



Windows Server  >  High Availability (Clustering)



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