25.6.1 sysdef definition statement

Organization of this subsection
(1) servmax operand
(2) multistandby operand

(1) servmax operand

You can specify this operand when the version of HA monitor is 01-08 or later.

For the servers to be switched using HA monitor, specify 16 or 64 as the maximum number of servers that can be started concurrently as running servers or standby servers on a single server machine.

16: Sets 16 as the maximum number of servers that can be started concurrently.
64: Sets 64 as the maximum number of servers that can be started concurrently.

Specify 64 when the number of servers, which are the units for switching on a single server machine, exceeds 16.

The number of servers to be switched using HA monitor also includes products other than HiRDB that are to be switched. HiRDB computes the number of servers to be switched as follows:

(2) multistandby operand

You can specify this operand when the version of HA monitor is 01-08 or later.

This operand specifies whether the multi-standby function, which defines multiple standby systems for a single running system, is to be used:

Table 25-19 provides specification guidelines for the multistandby operand.

Table 25-19 Specification guidelines for the multistandby operand

Environment of system switchover facilitymultistandby operand specification
Standby system switchover facilityWhen IP addresses are not inherited.Can be omitted.
When IP addresses are inherited.Specify use if multiple standby systems are defined.
Standby-less system switchover facilityStandby-less system switchover (1:1) facilityCan be omitted.
Standby-less system switchover (effects distributed) facilitySpecify use if the number of units belonging to the HA group is 3 or more.
Note
When use is specified, you must use the standbypri operand of the servers definition statement to specify priorities for the standby systems.