Summary
Windows 2008 R2 introduces a new Local Group Policy, which allows for fine-grained network throttle controls on a per-process basis. This method can be applied to any Windows process. This article gives a step-by-step process for applying network throttling to the nibbler.exe process, which directly involves all Catalogic Software Advanced backup data transfers. Similar procedures can be applied directly to other Catalogic Software modules supporting data transfer for other legacy features.
Step By Step
To enable network transition throttling on the nibbler.exe process, do the following; it applies to Windows 2008 R2 and later only:
1) On Windows 2008 R2 or later, log into the client machine (machine being backed up). From the Start menu, in the search box, enter gpedit.msc. The Local Group Policy Editor window displays.
2) Expand Computer Configuration > Windows Settings, right-click on Policy-based QoS and select Create new policy :
3) When the Policy-based QoS dialog displays, enter a Policy name that clearly describes the policy (in this case, "nibbler" is suggested). Select Specify Outbound Throttle Rate: and then fill in a value for limiting the outbound traffic. Click Next. In the example following, a 2 MBps rate is specified:
4) In the next window, set what This QoS policy applies to:. Select the radio button for Only applications with this executable name; and then fill in the executable name to throttle. Click Next. In the example following, nibbler.exe is the process we are interested in:
5) In the next window, select the IP address that this policy applies to. Unless you have a specific requirement to limit traffic in complex ways, it is suggested to leave the default settings, which are Any source IP address and Any destination IP address. Click Next:
6) In the next window, for Specify the protocol and port numbers, set the Select the protocol this QoS policy applies to: field to TCP and UDP. Unless you have specific requirements to limit port access in complex ways, it is suggested to leave the default settings, which are From any source port and To any destination port. Click Finish.
At this point, the process is complete. Based on the examples above, the Local Group Policy Editor reflects a new nibbler entry under Policy-based QoS.
There is no need to stop or restart processes; the QoS setting takes place immediately. Once the policy is in place, run a new backup. You should observe from the backup job log, the overall throughput to be roughly the value set in the Windows QoS policy.