Managing Serviceguard Eighteenth Edition, September 2010

MEMBER_TIMEOUT The amount of time, in microseconds, after which
Serviceguard declares that the node has failed
and begins re-forming the cluster without this
node.
Default value: 14 seconds (14,000,000
microseconds).
This value leads to a failover time of between
approximately 18 and 22 seconds, if you are using
a Quorum Server, or a Fiber Channel cluster lock,
or no cluster lock. Increasing the value to 25
seconds increases the failover time to between
approximately 29 and 39 seconds. The time will
increase by between 5 and 13 seconds if you are
you using a SCSI cluster lock or dual Fibre
Channel cluster lock).
Maximum supported value: 300 seconds
(300,000,000 microseconds).
If you enter a value greater than 60 seconds
(60,000,000 microseconds), cmcheckconf and
cmapplyconf will note the fact, as confirmation
that you intend to use a large value.
Minimum supported values:
• 3 seconds for a cluster with more than one
heartbeat subnet.
• 8 seconds for a cluster with more than one
heartbeat using CFS (see “Creating a Storage
Infrastructure with Veritas Cluster File
System (CFS)” (page 261) for more
information about CFS; see also the
“Considerations for CVM” under
HEARTBEAT_IP earlier in this section).
• 14 seconds for a cluster that has only one
Ethernet heartbeat LAN
• 22 seconds for a cluster that has only one IP
over Infiniband (IPoIP) heartbeat LAN
Cluster Configuration Planning 159