Description

   The SET CLUSTER/EXPECTED_VOTES command enables you to adjust the
   total number of expected votes in the cluster. Set this value
   equal to the number of votes contributed by each node plus the
   number of votes contributed by the cluster quorum disk. The
   system will automatically calculate the value of the cluster
   quorum from the total number of expected votes in the cluster.

   You can specify the expected total votes value as part of the
   SET CLUSTER/EXPECTED_VOTES command string. If you enter the
   command without specifying a value for expected votes, the system
   calculates the value for you, using the following formula:

   EXPECTED_VOTES=(NODE1_VOTES+NODE2_VOTES+...)+QUORUM_DISK_VOTES

   NODEn_VOTES is the value of the system parameter VOTES for each
   node in the cluster and QUORUM_DISK_VOTES is the value of the
   system parameter QDSKVOTES.

   When you enter the SET CLUSTER/EXPECTED_VOTES command without
   specifying a value, the system assumes that all nodes that are
   expected to be in the cluster are currently members.

   In general, you use the SET CLUSTER/EXPECTED_VOTES command only
   when a node is leaving the cluster for an extended period of
   time. Under normal circumstances, quorum is not reduced when a
   node leaves the cluster, because it is assumed that the node may
   be rebooted and rejoin the cluster. If a node is removed and is
   unable to rejoin the cluster within a reasonable period of time
   (for example, if a node crashes due to a hardware problem and
   cannot rejoin the cluster for several days), the quorum for the
   cluster can safely be reduced by lowering the total expected
   votes until that node rejoins.

   The purpose of a cluster quorum is to eliminate any possibility
   of the cluster partitioning into separate clusters and
   simultaneously accessing the same resources (such as disks).
   If the sum of the votes for all members of the cluster is smaller
   than the cluster quorum, all nodes will block activity until new
   nodes join to increase the vote total. Lowering the quorum value
   (by reducing the value of the total expected votes) when one or
   more nodes leave the cluster for long periods of time reduces
   this possibility.

   Note that no matter what value you specify for the SET
   CLUSTER/EXPECTED_VOTES command, you cannot increase quorum to
   a value that is greater than the number of the votes present,
   nor can you reduce quorum to a value that is half or fewer of the
   votes present.

   When you enter the SET CLUSTER/EXPECTED_VOTES command, either
   with or without an expected votes value specified, the system
   responds with a message indicating the new value that was
   actually set. Note that you need to enter this command only on
   one node in the cluster, because the new value for total expected
   votes is propagated through the cluster. This new expected votes
   value should then be stored in the system parameter EXPECTED_
   VOTES on each node, so that it remains in effect after the nodes
   reboot.

   When a node that was previously a member of the cluster is
   ready to rejoin, you should increase the system parameter
   EXPECTED_VOTES to its original value before bringing the node
   back to the cluster. Note that you do not need to use the SET
   CLUSTER/EXPECTED_VOTES command to increase the number of expected
   votes, because the expected votes value will be increased
   automatically when the node rejoins the cluster.