Home > Storage > PowerScale (Isilon) > Product Documentation > Data Protection > Dell PowerScale SyncIQ: Architecture, Configuration, and Considerations > Introduction to SyncIQ bandwidth reservations
Before OneFS 8.2, a global bandwidth configuration was available, affecting all SyncIQ policies. The global reservation is then split among the running policies. For more information about configuring the SyncIQ global bandwidth reservation, see SyncIQ performance rules.
OneFS 8.2 introduces an option to configure bandwidth reservations on a per-policy basis, providing granularity for each policy. The global bandwidth reservation available in previous releases continues in OneFS 8.2. However, it is applied as a combined limit of the policies, allowing for a reservation configuration per policy, as illustrated in the following figure. As bandwidth reservations are configured, consider the global bandwidth policy which may have an associated schedule.
Note: As bandwidth reservations are configured, consider that SyncIQ calculates bandwidth based on the bandwidth rule, rather than the actual network bandwidth or throughput available.