About the Client Attributes properties

Article:HOWTO11297  |  Created: 2008-01-17  |  Updated: 2010-01-09  |  Article URL http://www.symantec.com/docs/HOWTO11297
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About the Client Attributes properties

Client Attributes properties apply to clients of currently selected master servers.

Client Attributes contains the following subtabs:

  • General tab

  • Connect Options tab

  • Windows Open File Backup tab

Figure: General tab of Client Attributes host properties dialog box

General tab of Client Attributes host properties dialog box

The Client Attributes dialog box contains the following options:

Global client attributes

  • Allow client browse

    allows all clients to browse files for restoring. This attribute is overridden if the Browse and restore ability on the General tab is set to Deny both for a particular client(s).

  • Allow client restore

    Allows all clients to restore files. This attribute is overridden if the Browse and restore ability on the General tab is set to Allow browse only or Deny both.

Clients list

  • Clients list

    This is a list of clients in the client database on the currently selected master server(s). A client must be in the client database before you are able to change the client properties in the Client Attributes dialog box.

    The client database consists of directories and files in the following directory:

    Install_path\NetBackup\db\client

    If a client is not listed in the Clients list, click Add to add clients. To remove a client from the Clients list, select the client, then click Remove.

    The name that is entered here must match the Client Name property for the specific client. If it does not, the client cannot browse its own backups.

    Use the bpclient command to add clients to the client database if dynamic addressing (DHCP) is in use.

    Additional information about dynamic host names and IP addressing is available.

    See the NetBackup Administrator’s Guide, Volume II.

  • Add button

    Click Add to display the Add Client dialog box and add a client to the client database. Type a client name in the text box or click the browse button (...) and select a client.

  • Remove button

    Select a client in the Clients list and click Remove to delete the selected client from the client database.

General tab

  • Maximum data streams

    Specifies the maximum number of jobs that are allowed at one time for each selected client. (This value applies to the number of jobs on the client, even if multistreaming is not used.)

    To change the setting, select Maximum data streams. Then scroll to or enter a value up to 99.

    The Maximum data streams property interacts with the Maximum jobs per client and Limit jobs per policy as follows:

    • If Maximum data streams is not set, the limit is either Maximum jobs per client or Limit jobs per policy, whichever is lower.

    • If Maximum data streams is set, NetBackup ignores Maximum jobs per client. NetBackup uses either Maximum data streams or Limit jobs per policy, whichever is lower.

  • Browse and restore ability

    Specifies client permissions to list and restore backups and archives. Select the client(s) in the General tab of the Client Attributes dialog box and choose a Browse and restore ability property.

    To use the Global client attribute settings, select Use global settings.

    To allow users on the selected clients to both browse and restore, select Allow both.

    To allow users on the selected clients to browse but not restore, select Allow browse only.

    To prevent users on the selected clients from the ability to browse or restore, select Deny both.

  • Free browse

    Applies to the privileges that are allowed to a non-Windows administrator who is logged into the client. This property also applies to the users that do not have backup and restore privileges.

    Specifies whether the clients can list and restore from scheduled backups. (This setting does not affect user backups and archives.)

    Windows administrators can list and restore from scheduled backups as well as user backups regardless of the Free browse setting.

Connect Options tab

The properties in the Connect Options tab describe how a NetBackup server connects to NetBackup clients.

  • BPCD connect back

    • Use default connect options

      Use the value that is defined in the Firewall host properties of the client’s NetBackup server.

    • Random port

      NetBackup randomly chooses a free port in the allowed range to perform the legacy connect-back method.

    • VNETD port

      NetBackup uses the vnetd port number for the connect-back method.

  • Ports

    • Use default connect options

      Use the value that is defined in the Firewall host properties of the client’s NetBackup server.

    • Random port

      NetBackup randomly chooses a free port in the allowed range to perform the legacy connect-back method.

    • VNETD port

      NetBackup uses the vnetd port number for the connect-back method.

  • Daemon connection port

    If vnetd only is selected as the Daemon connection port, the BPCD connect back setting is not applicable. If vnetd only is selected as the Daemon connection port, Non-reserved port is always used regardless of the value of the Ports setting.

    • Use default connect options

      Use the value that is defined in the Firewall host properties of the client’s NetBackup server.

    • Automatic

      Connect to the daemons on the server using vnetd if possible. If the daemons cannot use vnetd, the connection is made by using the daemon’s legacy port number.

    • VNETD only

      Connect to the daemons on the server by using only vnetd. If the firewall rules prevent a server connection using the legacy port number, check this option.

    • Daemon port only

      Connect to the daemons on the server by using only the legacy port number.

Windows Open File Backup tab

Windows Open File Backup properties apply to selected Windows master servers. The properties appear as a tab on the Client Attributes dialog box.

The Windows Open File Backup properties specify whether a client uses Windows Open File Backup. The properties also specify whether Volume Snapshot Provider or Volume Shadow Copy Service is used as the snapshot provider.

Snapshots are a point-in-time view of a source volume. NetBackup uses snapshots to access busy or active files during a backup job. Without a snapshot provider, active files are not accessible for backup.

  • Add

    Click Add to add NetBackup clients (5.0 or later) only if you want to change the Windows Open File Backup defaults.

    By default, no clients are listed in the Client Attributes dialog box and the server uses the following Windows Open File Backup defaults for all Windows NetBackup clients (5.0 or later):

    • Windows Open File Backup is enabled on the client.

    • The snapshot provider for the client is VSP.

    • Snapshots are taken of individual drives (Individual drive snapshot) as opposed to all drives at once (Global drive snapshot).

    • Upon error, the snapshot is terminated (Abort backup on error).

  • Remove

    To delete a client from the list, select the client, then click Delete.

    To make changes to the default settings, add the client name to the client list. Select the client name in the client list, then make changes to the client’s Windows Open File Backup configuration settings.

  • Enable Windows Open File Backups

    Specifies that Windows Open File Backups be used for selected clients. Add clients to the list only if you want to change the default property settings. The default is that Windows Open File Backup is enabled for all Windows NetBackup clients, 5.0 or later.

    This option functions independently from the Perform Snapshot backups policy option that is available when the Snapshot Client is licensed.

    If a client is included in a policy that has the Perform Snapshot backups policy option disabled and you do not want snapshots, the Enable Windows Open File Backups for this client property must be disabled as well for the client. If both options are not disabled, a snapshot is created, though that may not be the intention of the administrator.

    For more information, see the NetBackup Snapshot Client Administrator’s Guide.

  • Snapshot Provider

  • Use Veritas Volume Snapshot Provider (VSP)

    Specifies that Volume Snapshot Provider (VSP) be used as the snapshot provider for selected clients. The default is VSP.

    VSP is configured for each client using the VSP tab for the client. (The tab is found under Host Properties > Clients > Selected client(s) > Windows Client > VSP).

    VSP can be used for Windows NT/2000/XP/Server 2003 clients. By default, all NetBackup clients (5.0 or later) use VSP as the Windows Open File Backup snapshot provider.

  • Use Microsoft Volume Shadow Copy Service (VSS)

    Specifies that VSS be used to create volume snapshots of volumes and logical drives for selected clients. VSS can be used for Windows Server 2003 clients only. Configure VSS through the Microsoft’s VSS configuration dialog boxes.

  • Snapshot Usage

    • Individual drive snapshot

      Specifies that the snapshot should be of an individual drive (default). When this property is enabled, snapshot creation and file backup is done sequentially on a per volume basis. For example, assume that drives C and D are to be backed up.

      If the Individual drive snapshot property is selected, NetBackup takes a snapshot of drive C, backs it up, and discards the snapshot and then takes a snapshot of drive D, backs it up, and discards the snapshot.

      Volume snapshots are enabled on only one drive at a time, depending on which drive is to be backed up. This mode is useful when relationships do not have to be maintained between files on the different drives.

      Use this configuration if snapshot creation fails when all volumes for the backup are snapshot at once when the Global drive snapshot property is enabled. (For example, if one volume in the volume set cannot meet the VSP quiet time requirements.) Individual drive snapshot is enabled by default for all non multi-streamed backups by using the Windows Open File Backup option.

  • Global drive snapshot

    The property specifies that the snapshot is of a global drive. All the volumes that require snapshots for the backup job (or stream group for multi-streamed backups) are taken at one time.

    For example, assume that drives C and D are to be backed up.

    In this situation, NetBackup takes a snapshot of C and D. Then NetBackup backs up Cand backs up D.

    NetBackup then discards the C and D snapshots.

    This property maintains file consistency between files in different volumes. The backup uses the same snapshot that is taken at a point in time for all volumes in the backup.

    Note:
    The Individual drive snapshot and Global drive snapshot properties only apply to non multi-streamed backups that use Windows Open File Backup. All multi-streamed backup jobs share the same volumes snapshots for the volumes in the multi-streamed policy. The volume snapshots are taken in a global fashion.

  • Snapshot error control

    • Abort backup on error

      Specifies that a backup aborts if it fails for a snapshot-related issue after the snapshot is created and while the backup is using the snapshot to back up open or active files on the file system.

      The most common reason for a problem after the snapshot is created and is in use by a backup, is that the cache storage filled to capacity. If Abort backup on error is checked (default), the backup job aborts with a snapshot error status if the backup detects a snapshot issue.

      This property does not apply to successful snapshot creation. The backup job continues regardless of whether a snapshot was successfully created for the backup job. The Abort backup on error property applies only to the snapshot errors that occur after the snapshot is successfully created and is in use by a backup job.

      This property appears for master servers only.

    • Disable snapshot and continue

      Specifies that if the snapshot becomes invalid during a backup, the volume snapshots for the backup are destroyed. The backup continues with Windows open file backups disabled.

      Regarding the file that had a problem during a backup—it may be that the file was not backed up by the backup job. The file may not be able to be restored.

      This property appears for master servers only.

      Note:
      Volume snapshots typically become invalid during the course of a backup because insufficient cache storage was allocated for the volume snapshot. Reconfigure the cache storage configuration of the Windows Open File Backup snapshot provider to a configuration that best suits your client’s installation.


Figure: Connect Options tab of Client Attributes host properties dialog box

Connect Options tab of Client Attributes host properties dialog box


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