netsh export command 'pauses' clustered DHCP service and the cluster detects the service as failed

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we have windows server 2008 r2 failover cluster runs dhcp clustered service. have windows server 2008 r2 dhcp server (not clustered) wish use warm standby dhcp server. warm standby dhcp server used if dhcp failover cluster fails.

the idea run scheduled task on dhcp failover cluster performs "netsh dhcp export". export dhcp database file can copied on network warm standby dhcp server. on warm standby dhcp server, use script start dhcp service, run netsh import copy of dhcp database , stop dhcp service.

the warm standby dhcp server not authorised in active directory.  in dr event, resume dhcp service, start dhcp service on warm standby dhcp server, authorise server in active directory , enable conflict detection.

we have following problem seeking assistance with.

when running "netsh dhcp export" command on dhcp failover cluster, netsh command pauses clustered dhcp service duration of export. once export completed, clustered dhcp service resumes normal operation. however, cluster service detects dhcp service has stopped tries start again. causes the export operation fail.

we have looked @ possibility of altering isalive , looksalive values on "dhcp server" cluster resource. can access via advanced properties tab under “basic resource health check interval” , “advanced resource health check interval”.

however, problem remains these times relative when service starts (i believe) , if extended, cluster service still perform isalive , looksalive check during export , cluster see dhcp service failed , try start dhcp service prior netsh completing export.

we looking graceful solution problem.

thanks,
darren


thanks, are  trailing idea.. far appears work.

<start script>

::blow out isalivepollinterval , looksalivepollinterval 1 hour
cluster resource "dhcp server" /properties isalivepollinterval=3600000
cluster resource "dhcp server" /properties looksalivepollinterval=3600000

<do export>

::reset isalivepollinterval , looksalivepollinterval defaults
cluster resource "dhcp server" /properties isalivepollinterval=240000
cluster resource "dhcp server" /properties looksalivepollinterval=185000

<end script>



Windows Server  >  High Availability (Clustering)



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