When Admin users create or edit policies, they can specify job execution priority and bandwidth settings for computers on the Performance tab.
When a policy is assigned to a computer, these settings appear on the computer’s Advanced tab, are used for all backup jobs on the computer, and cannot be modified. To change the settings, you must unassign the policy from the computer, or edit values in the policy.
Execution priority
Specifies the processing priority of a backup or restore.
To set the execution priority, drag the slider. High is the highest priority, and Low requires the least CPU priority. Normal (the default setting) is usually adequate, depending on the applications being run on the computer during the assigned job.
Bandwidth
Bandwidth throttling settings specify the amount of bandwidth consumed by an Agent for backups and, in the case of most Agents, restores. For example, you might want to restrict the amount of bandwidth used for daytime backups so that online users are not affected, and allow unlimited bandwidth usage at night so that scheduled backups run as fast as possible.
Bandwidth throttling values are set at the computer (Agent) level for most Agents, and apply to both backups and restores. If three jobs are running at the same time on the same computer, each job gets 1/3 of the specified maximum bandwidth. For the Hyper-V Agent, bandwidth throttling is applied at the Host level, and applies only to backups. If three VMs are being backed up on a node, each gets 1/3 of the specified maximum bandwidth on the node. The total bandwidth sent to the vault can be as high as the specified maximum multiplied by the number of nodes where the Host service is installed.
Bandwidth settings include:
•Maximum bandwidth (upper limit), in megabits per second, to be consumed by the Agent for all backups and restores
•Period of time during the day that throttling is in effect. Only one time window can be specified. Outside the window, no throttling takes place.
•Days of the week that throttling is in effect
If the bandwidth throttling time period begins when a backup is underway, the maximum bandwidth is applied dynamically to the running backup. Similarly, if the bandwidth throttling time period ends when a backup is running, bandwidth throttling is ended for the backup.
If you edit an Agent’s bandwidth settings while a backup is running, the new Agent settings do not affect the backup that is running. Bandwidth settings are applied when a backup starts, and are not applied to backups that are already running.