Modify VMware Update Manager host reboot timeouts

I recently had a need to modify VMware Update Manager (VUM) host reboot timeout to allow host firmware patching during reboot without timing out remediation job.  Most VUM settings are in vci-integrity.xml file located in “C:\Program Files (x86)\VMware\Infrastructure\Update Manager“.

Lines I need to change were following:

<HostRebootWaitMaxSeconds>1800</HostRebootWaitMaxSeconds>
<HostRebootWaitMinSeconds>600</HostRebootWaitMinSeconds>

I changed the values to:

<HostRebootWaitMaxSeconds>5400</HostRebootWaitMaxSeconds>
<HostRebootWaitMinSeconds>1800</HostRebootWaitMinSeconds>

This change allowed me to patch ESXi host (HP Blade server) and install new firmwares with a same reboot and with as less operations as possible.

My workflow was following:

1) Open iLO consoles for all servers in the cluster I needed to patch
2) Mount an HP firmware iso to all servers
3) Scan host with VUM
4) Remediate hosts with VUM
5) Do something useful while hosts are been patched and firmwares are been updated.
6) Verify

With this workflow VUM will put ESXi host to maintanance mode, install some patches, reboot, host will boot from firmware DVD, new firmwares will be automatically installed, host is rebooted again and it will boot back to ESXi. After that VUM will repeat same tasks on all other servers.

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