Zabbix 4.4. with several alerts: "Disk read/write request responses are too high"

[robertitox]

Dear all, I have a Zabbix 4.4 platform: one Frontend server, another DB (Mafriadb) server and the Zabbix server. All these 3 servers run on vmware hosts which a storage behind.

Everything looks good, except for the alarms telling:

Disk read/write request responses are too high (read > 20 ms for 15m or write > 20 ms for 15m)

This alarms are fired for several Linux hosts with Zabbix agents.

I have lot of RAM and CPU's, the load is OK.

My zabbix_server.conf is:

ListenPort=10051
LogFile=/var/log/zabbix/zabbix_server.log
LogFileSize=0
PidFile=/var/run/zabbix/zabbix_server.pid
SocketDir=/var/run/zabbix
DBHost=10.32.88.100
DBName=zabbix
DBUser=zabbix
DBPassword=xxx
DBPort=3306
StartPollers=20
StartPollersUnreachable=10
StartPingers=10
VMwareCacheSize=64M
SNMPTrapperFile=/var/log/snmptrap/snmptrap.log
StartDBSyncers=10
Timeout=30
UnreachablePeriod=60
UnreachableDelay=20
AlertScriptsPath=/usr/lib/zabbix/alertscripts
ExternalScripts=/usr/lib/zabbix/externalscripts
FpingLocation=/usr/bin/fping
Fping6Location=/usr/bin/fping6
LogSlowQueries=3000
StatsAllowedIP=127.0.0.1

In frontend and DB nodesI have not done any customized configuration, everything by default.

Can you help me please???

Maybe my VMware storage is running abnormally???

Special thanks!!!

[LenR]

So these alerts are NOT you your zabbix server, just "random" other Linux hosts? If so, it's pointing to potential I/O issues on these hosts. On a new install, using the supplied templates, these values are just "suggestions" from the install. If these levels don't fit your environment, then adjust the template, or make rules for "I/O Slow" systems. However, that is pretty bad I/O response.