KB ID 0001529

Problem

After ESX 5.5 Update 2, VMware added ATS Heartbeat.Some vendors, (like HPE SureStore and VSA) recommend that this is disabled. I can’t find any info about whether it’s safe to do this in production, so to be on the safe side I placed the hosts in maintenance mode first.

Enter Maintenance Mode

Use the following command;

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vim-cmd /hostsvc/maintenance_mode_enter

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Disable ATS Heartbeat

Use the following command to disable;

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esxcli system settings advanced set -i 0 -o /VMFS3/UseATSForHBOnVMFS5

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Then confirm it worked with following command;

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esxcli system settings advanced list -o /VMFS3/UseATSForHBOnVMFS5

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Confirm that INT Value is set to 0 (zero).

Exit Maintenance Mode

Use the following command;

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vim-cmd /hostsvc/maintenance_mode_exit

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Related Articles, References, Credits, or External Links

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