Protected Node Parameters

Specify these parameters when you want to change a protected node’s configuration from the PROTECTION CONFIG tab.

•

Hostname: If you are adding a protected node, enter the host name or IP address of the node to protect. This field is display-only under MODIFY.

•

Backup Interval: The interval (in minutes/hours) between the start of data backups. To monitor these backups, go to Monitor protected nodes and Monitor backups.

•

Backup Retention Time: The maximum number of days to retain backed-up data that is no longer referenced. The PROTECTION CONFIG tab on a DR Appliance is slightly different from its HA counterpart: the DR version shows the HA Appliance’s backup retention time as well as its own backup retention time; the DR version does not show a protection disabled status because this concept does not exist on a DR Appliance.

•

Initial Backup Time: Select the time of day for the initial backup. Select ASAP to begin initial backup as soon as possible. Be aware that the initial backup can take a considerable amount of time. Subsequent backups record only changes that have occurred since the preceding backup and so will be relatively brief.

•

OS Type?: Both Linux and Windows operating systems are supported, though the parameters available vary.

•

Auto RN Creation?: Instructs onQ to create a recovery node for this protected node.

•

Disable Protection?: Select yes or no to disable or enable protection for this node. If you have disabled protection, the most recent re-build of the recovery node is retained but backups are suspended. If you disable protection while a backup is in progress or an RN is being rebuilt, that process continues to completion but further backups are suspended. When you re-enable protection, backups resume and subsequent RN rebuilds are based on the existing RN. See Disable protection of nodes.

Windows‑Only Parameters

There are some parameters of the recovery node that correspond to the protected node:

•

Number of CPUs: # of CPUs for this recovery node.

•

RN Memory: RN’s memory in GBs.

•

Disk Letter: Disk’s letter or Mount Point.

•

Size: Size of the disk in GBs.

Linux‑Only Parameters

•

Number of CPUs: # of CPUs for this recovery node.

•

RN Memory: RN’s memory in GBs.

•

Mount Point: Where the protected node’s filesystem is mounted.

•

Format: File system type.

•

Size: Size of the disk in GBs.

Advanced Parameters

There are a few ADVANCED parameters:

•

Execute Pre Snapshot script? executes before a snapshot starts on the protected node. See Run custom backup scripts.

•

Execute Post Snapshot script? 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.) See 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? onQ’s backup utility clears VSS flags after it performs backups. This process can conflict with some applications 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 option to No (default).

•

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 Windows Cluster Services.) If you select Yes, specifies that the node is part of an MSFT cluster (Microsoft Cluster Server/MSCS). MSFT for Windows 2012, Windows 2008 R2, Windows 2008, and Windows 2003 are supported. Only iSCSI connections to a storage device in a SAN environment is supported. 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.

•

Cluster Volumes: PN’s volumes/partitions. List of non‑boot drives. From this list, choose the volumes that correspond to your cluster.

•

Virtual SAN IP Address: Any dedicated and unique IP other than the SAN’s physical IP address. This IP address must be on the same subnet as the onQ Appliance’s physical IP address.

•

Virtual SAN Gateway Address: Virtual SAN’s Gateway address.

•

Virtual SAN Subnet Mask: Virtual SAN’s subnet.

•

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.