3.3.3 Preventing multiple resets on a host
Multiple resets on a host means performing reset on the same host more than once. This subsection explains how to prevent multiple resets on a host.
- Organization of this subsection
(1) Configurations in which multiple resets on a host might occur
If the hot standby operation is performed due to a host failure, recovery of the active system might be delayed depending on the hot-standby configuration because multiple standby systems issue host resets.
The following figure shows a configuration in which multiple resets on a host might occur.
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![[Figure]](GRAPHICS/F0000059.GIF)
In the configuration shown in the figure above, standby system 1 and standby system 2 both issue a reset request for a host failure on the active system, thereby delaying recovery of the active system.
(2) Required environment settings
There are no required environment settings.
To prevent multiple resets on a host, there must be only one standby system that resets the active system. This standby system is called the reset issuing host. The reset issuing host is determined automatically by HA Monitor when the server is started.
For details about the reset issuing host, see 4.2.1 How to determine a reset issuing host.