Limiting the total number of simultaneously backed-up virtual machines

In the Scheduling backup option, you can limit the number of simultaneously backed-up virtual machines per protection plan.

When an agent runs multiple plans at the same time, the number of simultaneously backed-up machines adds up. Multiple backups that are run by the same agent might affect the backup performance and overload the host and the virtual machine storage. That is why you can configure another limitation, on the agent level.

To limit the simultaneous backups on the agent level

Agent for VMware (Windows)

On the machine with the agent, create a new text document, and then open it in a text editor.

Copy and paste the following lines into the file.

Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\SOFTWARE\Acronis\MMS\Configuration\ManagedMachine\SimultaneousBackupsLimits]
"MaxNumberOfSimultaneousBackups"=dword:00000001

Replace 00000001 with the hexadecimal value of the limit that you want to set.

For example, 00000001 is 1 and 0000000A is 10.
Save the document as limit.reg.
Run the file as an administrator.
Confirm that you want to edit the Windows registry.
Restart the agent.
1. In the Start menu, click Run.
2. Type cmd, and then click OK.
3. On the command line, run the following commands:
```
net stop mms
net start mms
```

Agent for Hyper-V

On the machine with the agent, create a new text document, and then open it in a text editor.

Copy and paste the following lines into the file.

Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\SOFTWARE\Acronis\MMS\Configuration\ManagedMachine\SimultaneousBackupsLimits]
"MaxNumberOfSimultaneousBackups"=dword:00000001

Replace 00000001 with the hexadecimal value of the limit that you want to set.

For example, 00000001 is 1 and 0000000A is 10.
Save the document as limit.reg.
Run the file as an administrator.
Confirm that you want to edit the Windows registry.
Restart the agent.
1. In the Start menu, click Run.
2. Type cmd, and then click OK.
3. On the command line, run the following commands:
```
net stop mms
net start mms
```

Virtual appliances

This procedure applies to Agent for VMware (Virtual Appliance), Agent for Scale Computing, Agent for Virtuozzo Hybrid Infrastructure, and Agent for oVirt.

In the console of the virtual appliance, press CTRL+SHIFT+F2 to open the command-line interface.
Open the /etc/Acronis/MMS.config file in a text editor.

Locate the following section:

<key name="SimultaneousBackupsLimits">
    <value name="MaxNumberOfSimultaneousBackups" type="Tdword">"10"</value>
</key>

Replace 10 with the maximum number of parallel backups that you want to set.
Save the file.
Restart the agent by running the reboot command.

All-in-One VMware appliance (OVF)

Log in as the root user to the All-in-One VMware appliance .

Use the same password that you use to log in to the Cyber Protect web console.
Open the /etc/Acronis/MMS.config file in a text editor.

Locate the following section:

<key name="SimultaneousBackupsLimits">
    <value name="MaxNumberOfSimultaneousBackups" type="Tdword">"10"</value>
</key>

Replace 10 with the maximum number of parallel backups that you want to set.
Save the file.
Restart the agent by using the following command:
```
sudo service acronis_mms restart
```

Agent for Virtuozzo

Agent for Virtuozzo is bundled with Agent for Linux.

Log in as the root user to the machine with the agent.

Use the password that you use to log in to the Cyber Protect web console.
Open the /etc/Acronis/MMS.config file in a text editor.

Locate the following section:

<key name="SimultaneousBackupsLimits">
    <value name="MaxNumberOfSimultaneousBackups" type="Tdword">"10"</value>
</key>

Replace 10 with the maximum number of parallel backups that you want to set.
Save the file.
Run the following command to restart the agent:

sudo service acronis_mms restart