Update modules/ROOT/pages/backup-restore/online-backup.adoc

Author: NataliaIvakina

modules/ROOT/pages/backup-restore/online-backup.adoc

@@ -231,6 +231,7 @@ To extend the backup timeout, modify the xref:configuration/configuration-settin
 It controls the timeout duration of the catchup protocol, which is the underlying protocol of multiple catchup processes, including backups.
 
 You can also tune up xref:configuration/configuration-settings.adoc#_checkpoint_settings[the Checkpoint settings] or check that your disks are performant enough to handle the load. 
+For more information, see xref:performance/disks-ram-and-other-tips/#performance-checkpoint-iops-limit[Checkpoint IOPS limit].
 
 Periods of high traffic may also impact the duration of checkpointing -- and thus the success of a backup job.