Non-optimized ESX console results in slow snapshot removal and creation process.
During standard backup operations in Direct-To-Target mode, the ESX Service Console is used to run process data. The additional load placed on the Service Console should be addressed by implementing the suggestions below.
Slow snapshot creation removal on ESX host could be do to lack of dedicated CPU cycles and memory for this process.
Ensuring your ESX Hosts are at an adequate patch level, Quest recommends that the changes below be made on your ESX hosts to optimize the backup of VMs when using Direct-To-Target mode. These ESX resource settings are not mandatory, but are recommended to minimize potential issues and maximize performance.
Increase the VIM CPU reservation (2500-3200 MHz):
In the VI Client inventory, select the ESX host > Configuration tab > System Resource Allocation. In the System Resource Pools view, select VIM and click Edit Settings.
1. Adjust the CPU reservation slider up to the equivalent of one core (2500-3200 MHz).
2. Select Expandable Reservation and Unlimited.
Increase the Service Console CPU Reservation to 1500 MHz
In the VI Client inventory, select the ESX host > Configuration tab > System Resource Allocation. In the System Resource Pools view, select Console and click Edit Settings.
1. Adjust the CPU reservation slider up to 1500 MHz.
2. Select Expandable Reservation and Unlimited.
Increase the RAM allocated to the Service Console to 800 MB.
In the VI Client inventory, select the ESX host > Configuration tab > System Resource Allocation. In the System Resource Pools view, select Console and click Edit Settings.
1. Adjust the Memory reservation slider to 800 MB.
Note:These changes requires a reboot of the ESX Host in order to take effect
vRanger Evaluation Guide is included with this KB where more information could be found on optimizing your backup performance.
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