• Disable Replication to DR?: Select No to enable or Yes to disable replication for this node. You might want to disable replication if this node is not important for business continuity, but you do want backups and the ability to archive them. If you are unsure, keep this setting enabled. See Disable replication for individual nodes.

• Execute Pre Snapshot script? (This parameter is not applicable for agent‑less enrollment.) Executes before a snapshot starts on the protected node. See Run custom backup scripts.

• Execute Post Snapshot script? (This parameter is not applicable for agent‑less enrollment.) Executes soon after a snapshot completes on the protected node. See Run custom backup scripts.

• Enable Filter Driver? (This parameter is not applicable for Linux-based protected nodes and agent‑less enrollment.) See (Agent‑based PNs) Methods of Performing Incremental Backups.

• Truncate SQL logs after backup? (This parameter is not applicable for Linux-based protected nodes.) After a successful backup, onQ truncates the SQL logs.

• VSS Copy Only? (This parameter is not applicable for agent‑less enrollment.) onQ’s backup utility clears VSS flags after it performs backups. This process can conflict with some applications (for example, Backup Exec) that depend on these VSS flags. For example, other backup products can trigger Exchange and SQL Server to truncate log files after incremental backups. Only change this setting to Yes if you are using an application that relies on and updates these VSS flags; otherwise, set this parameter to No (default). Setting this parameter to Yes ensures that onQ does not alter or reset VSS flags and leaves your files, generally transaction logs, as-is.

• PN Scan Threads: This is the number of threads used during the scan process. The more threads used, the more likely you are to lock up your PN. If you are unsure, specify 1 thread.

• PN Transfer Threads: The number of threads used during the backup process. The more threads used, the sooner the backup process completes. Ensure that the client machine has enough resources to handle the number of threads you specify. If you are unsure, specify 4 threads.

• CPU Resource Limit: Sets the CPU usage limit for the backup process on the protected node during the transfer phase. The default is 30% of all cores.

• Disk Resource Limit: Sets the disk bandwidth limit for the backup process on the protected node during the transfer phase. The default is 170 MB/second.

• Network Resource Limit: Sets the network bandwidth limit for the backup process on the protected node during the transfer phase. The default is 170 MB/second.

• Enable Cluster Support?: (This parameter is not applicable for Linux-based protected nodes. Also, for information on how to work with PNs/RNs in a cluster environment, refer to Enrollment in Windows Cluster Services Environment.) If you select Yes, specifies that the node is part of an MSFT cluster (Microsoft Cluster Server/MSCS). In a nutshell, cluster support works by creating a virtual SAN to replicate your physical SAN. The PN accesses the SAN using a virtual IP address. For each volume, the onQ Appliance creates a virtual disk.

• onQ Proxy Address: Specifies the onQ Proxy that the PN needs to use to communicate with the onQ for backups. Unless your PN is on a separate subnet, leave this field blank. For more information, go to About onQ Proxy.

• Backup Exclude List: The button shows the exclude list to be either DEFAULT (as defined by Quorum) or CUSTOM (as defined by your administrator). Click the button to modify the backup exclude list for this protected node. See Edit backup exclude list.

• Backup Include List: onQ backups up only those files and directories that you specify. This button appears if File Backup Only is enabled. See Edit backup include list.

• Startup Dependencies. onQ will start a given RN after the RNs on which it depends are up and running. See Configure startup dependencies.

• RN Services. Some services installed on a PN will cause problems if they attempt to run on the RN. In this case, you can configure the startup settings for these services. See Edit RN services list.

• RN Networks. onQ enables your RNs to run on multiple networks. See Create Custom Networks for RNs.