This article applies to:
Product edition: Phoenix (Gov Cloud included)
Overview
This article provides the steps to change the default VMware backup concurrency.
💡 Tip
With the default backup proxy configuration, you can back up up to three virtual machines in parallel.
Calculate concurrency
Assuming you have a backup proxy configuration of X vCPUs and Y GB RAM, the number of concurrent backups possible are calculated as follows:
Number of concurrent backups = Minimum {(X*0.7)/2, (Y-2)/1.3}
Example-1: For a setup having 16 vCPUs and 16 GB RAM:
Number of concurrent backups = Minimum { (16*0.7)/2 = 5.6, (16-2)/1.3 = 10.7 } = 5.6
Hence, you can run up to 6 concurrent backup operations (after rounding the last decimal).
You can also calculate the ideal RAM configuration required to save the system resources from the formula below:
Optimal RAM configuration required to run 6 concurrent backups = (6*1.3)+2 = 9.8
You can optimize your setup to 10 GB RAM (rounded to nearest available unit) since the number of concurrent backups is governed by the vCPU configuration. The converse is applicable if the number of concurrent backups is derived from the RAM configuration.
Change the VMware backup concurrency in configuration file
Agent Version 6.x :
Stop the Phoenix agent service.
/etc/init.d/Phoenix stopVerify if any Phoenix processes are still running.
ps -ef| grep -i PhoenixIf any process is still found running, kill the process.
Kill -9 <process id>Go to /etc/Phoenix/VMWARE.
cd /etc/Phoenix/VMWAREEdit the Phoenix.cfg file using vi editor.
vi Phoenix.cfgChange the maximum concurrent backup limit from 3 to N and save the file. (Where N is the new concurrency number)
For example, to change the concurrency to 8:
VM_MAX_CONCURRENT_BACKUPS = 8Start the Phoenix Agent service on the backup proxy.
/etc/init.d/Phoenix start
Agent Version 7.x :
Stop the Druva-EnterpriseWorkloads agent service.
service Druva-EnterpriseWorkloads stopVerify if any Phoenix processes are still running.
ps -ef | grep -i EnterpriseWorkloadsIf any process is still found running, kill the process.
Kill -9 <process id>Go to /etc/Druva/EnterpriseWorkloads/vmware.
cd /etc/Druva/EnterpriseWorkloads/vmwareEdit the VMwareConfig.yaml file using vi editor.
vi VMwareConfig.yamlChange the maximum concurrent backups limit from 3 to N and save the file.
(Where N is the new concurrency number.)
For example, to change the concurrency to 8:
vm_max_concurrent_backups: 8Start the Druva-EnterpriseWorkloads agent service on the backup proxy.
service Druva-EnterpriseWorkloads start