Setting Backup Default Source Options

Backup source options control how DPX behaves during a backup operation when it encounters certain situations involving source nodes and data.

To check the default backup source options or edit default backup source options:

1. Open the Configure Defaults window by selecting Configure from the Function Tab bar and clicking Defaults.

2. Expand the Backup options.

3. Click the Source icon or name to select it.

   The selection is indicated by the selection check box next to the option icon, and the Backup Source Options dialog appears in the right pane.

4. Optionally enter or revise each field:

   • Verify Backup

     Controls the data verification technique for writing data to a media volume. The higher the verification level, the greater the safety and the longer a backup takes. Each verification level builds upon the preceding level. For example, level 3 performs level 1 and level 2 verification as well. Select one of the following options:

     • No Verification

       Writes data to the media volume without verification. This is the fastest option and relies on the tape device for data verification.

     • Level 1

       Reads the tape to ensure that it is readable.

     • Level 2

       Reads the tape and ensures that the SIDF headers are present and contain the correct information.

     • Level 3

       Ensures that the checksum of each file on the tape matches the one contained in the SIDF header for that file. This verification is only performed if the checksum feature is set to On in Set Job Destination Options. The tape and SIDF headers are also read and verified (levels 1 and 2).

   • Data Compression

     Compresses data prior to network transmission.

     Select Yes to compress data prior to transmission at the node being backed up. This setting is recommended if there is processing power available on the client nodes and network bandwidth is limited. This setting minimizes the impact of data transmission on data lines.

     Or, select No to disable the data compression.

   • Skip NFS Volumes

     Determines expected behavior when encountering an NFS (network file system) volume during a backup operation. NFS volumes are remotely mounted volumes owned by another node. This option also controls the backup behavior of drives that are mapped to the Microsoft Windows node (CIFS mount point).

     Select No to back up NFS volumes and drives that are mapped to the Microsoft Windows nodes.

     Or, select Yes so as no to back up NFS volumes or drives that are mapped to the Microsoft Windows nodes.

     • Open File Retries

       If you are not using an open file manager, this option controls how many times DPX attempts to back up an open file. If you enter zero, DPX skips open files. If you enter a number, DPX waits until all the files on the node have been backed up then tries again to save the open files. DPX attempts this the number of times you enter here.

     • Down Node Retries

       Controls how DPX behaves when it cannot establish contact with a node during a backup operation. If you enter zero, DPX skips unreachable nodes. If you enter a number, DPX waits until all the reachable nodes have been backed up and then retries the nodes that it could not back up on its first attempt. The number you enter determines how many times DPX tries to reach unreachable nodes.

     • Task Retry Intervals (Minutes)

       Determines how long to wait before retrying failed tasks.

       When a task fails (due to permission problems, open files, interim job changes, etc.), it waits the number of minutes specified in this field before attempting that task again. Because the same failure might occur if the task is retried too soon, it is better to allow some time for an error to be corrected before retrying the task. A task is only retried once. Failing tasks appear in error message lists in the Job Log. All tasks are subject to retry.

   • Catalog Open Files

     If you are not using an open file manager, this option tells Catalogic DPX whether to catalog open files encountered on UNIX systems. On UNIX nodes, Catalogic DPX backs up the file and then checks to determine if it has been modified while the backup transpired. If it has, the file is considered open. Cataloging open files is not generally recommended.

     Select No so as not to save the backed up file if it detects that the file has been modified during the backup process and the number specified in the Open File Retry field has been reached.

     Or, select Yes to catalogs the backed up file if it detects that the file has been modified during the backup process and the number specified in the Open File Retry field has been reached. Catalogic DPX catalogs its last attempt to back up an open file if it finds the file is still open. Note that cataloging a file that has been modified during the backup can compromise the integrity of the file when that file is restored.

     Note. Do not configure this option but keep the default settings for Catalog Backup.

     • MSSQL DB Consistency Check

       Tells DPX to run a consistency check on SQL Server before backing up a SQL Server database. The check runs three utilities that Microsoft recommends before a backup: DBCC CHECKDB, DBCC CHECKALLOC, and DBCC CHECKCATALOG.

       No	Does not perform the consistency check.
       Yes	Performs the consistency check.

     • Back Up Content of Mounted Drive

       Tells DPX whether to back up data on a mounted drive (volume). This field only applies to NTFS volume mount points on Windows 2000 and higher machines.

       No	Data on a mounted drive is not backed up through a volume mount point. Whether the directory is restored as a volume mount point or not depends on the Set Job Destination Options.
       Yes	Data on a mounted drive is backed up through a volume mount point.

       Note. If set to yes, and if you select both a volume mount point and the drive itself, duplicate backups might occur.

     • Back Up Data in Remote Storage

       Remote Storage Service (RSS) is the Hierarchical Storage Management (HSM) system for Windows 2000 and higher, which automatically migrates files from disk to remote media, like tape. If the Windows administrator configures this service and disk space becomes low, files not modified for a specified period of time are sent to remote storage. A link (stub file) to the remote storage is kept in their place. Users can recall these stub files by accessing their links. This field determines whether DPX should back up links to these files or the files themselves.

       No	Files on remote storage are not backed up. DPX backs up their links.
       Yes	Files on remote storage are backed up by DPX. In this case, files are backed up from tape to tape. At restore, files are restored to disk. However, because file dates are not affected by backup and restore, it is likely that the files will automatically be sent back to remote storage.

       Note. The tape devices and the media pool used by Windows for remote storage service cannot be shared with DPX.

     • Back Up System Protected Files

       Tells DPX whether to back up System Protected Files as part of the System State Backup. This applies only to Windows 2000 and higher backups.

     • Default MS Exchange Handling

       Controls whether Exchange backup occurs at the database or individual message level.

       Database Level Backup	EXCHANGE and EXCH2000 disks appear on the Backup File definition screen; EXCHANGEFS and EXCH2000FS disks do not appear. If you back up an entire server, database level backups are performed; folder level backups are not. Database Level Backup is the default.
       Folder Level Backup	EXCHANGEFS and EXCH2000FS disks appear on the Backup File definition screen; EXCHANGE and EXCH2000 disks do not appear. If you back up an entire server, folder level backups are performed; database level backups are not.
       Both Database and Folder Level Backup	All Exchange disks appear on the Backup File definition screen. If you back up an entire server, both database and folder level backups of Exchange disks are performed.

     • Expand Netware Compressed Data

       Tells DPX whether to expand compressed data. This applies only for supported versions of NetWare.

       Yes	Expand compressed data when performing the backup. Select this option if you may want to restore to an uncompressed volume. DPX cannot restore compressed data to an uncompressed volume.
       No	Do not expand the compressed data. If you choose this option, you can restore this data only to a compressed volume.

     • NDMP File History Handling

       Controls file history generation for NDMP and Block backup tasks.

       For Block backups, recovery through the use of Instant Access provides for granular file-level restore regardless of whether file history was generated or not. Instant Access allows Block backups to be run very frequently by eliminating the need to include file histories during backup. For information on using Instant Access for file-level restore, see Instant Access Restore as a File History Alternative in the User's Guide.

       Disable File History	Disables NDMP server file history generation.
       Process File History on Local Client	Enables NDMP server file history generation and processes the file history data on the NDMP client node. This is the default.
       Process File History on Master Server Appliance	Enables NDMP server file history generation but transmits the file history data to the master server node for processing.

       Related Topics:

     • Generic NDMP Restore with File History Processing

     • Enable NDMP Server Logging

       Controls the routing of NDMP server generated log messages to the job log file.

       Yes	All NDMP server log messages will be routed to the master server’s job log file. Yes is the default.
       No	The NDMP server log messages will be logged locally in the NDMP client node log file instead of in the master server’s job log file.

     • Additional NDMP Environment

       This option allows you to introduce any additional NDMP environment variables that are necessary for the backup task. Specify your environment variables as an ASCII string with an environment variable name and value pairs using the following syntax:

         env1name=value,env2name=value,...

       Note that syntax validation is not performed on the specified value at job definition time, but rather at run time. Only valid entries are added to the NDMP operation environment.

       Do not specify any of the following NDMP environment variables in your variable string because DPX controls these specifically:

       • BASE_DATE

       • DEBUG

       • DIRECT

       • DUMP_DATE

       • EXTRACT

       • FILES

       • FILESYSTEM

       • HIST

       • LEVEL

       • PREFIX

       • RECOVER_FILEHIST

       • SINCE_TIME

       • TYPE

       • UPDATE

       • VERBOSE

       Specifying the variables above may cause unexpected results due to unpredictability of the order in which they are evaluated.

       NDMP servers from different vendors may support different NDMP environment variables. Except for a few well-known environment variable names, there is currently no standardized set of such variables. This option allows you to add environmental variables specific to your NDMP server.

The following fields are for Block backups only.

• Throttle

  Enter a value in KB/s (kilobytes per second) to set maximum transmission rate per backup task.The value 0, the default, allows the task to use the maximum bandwidth available. Note that throttling is not supported for backup to NetApp Clustered Data ONTAP. See Bandwidth Considerations in the User's Guide.

• Take Snap Shot

  If this option is selected, DPX first creates a snapshot of the current state of all data to be backed up. Then, DPX backs up the snapshot to the destination server. This enables DPX to back up open files.

  Yes	Take a snapshot of the current data condition, then back up the snapshot.
  No	Do not take a snapshot first.

• Task Data Transfer Retry Count

  Controls the number of checkpoint retries of an interrupted Block backup. The retries attempt to resume the job from the last successfully backed up data block. Enter the number of checkpoint restart attempts.

• Truncate Exchange Logs

  This option controls truncation of Microsoft Exchange Logs during a Block backup.

  Yes	After the backup is complete, DPX deletes the old Exchange logs. Yes is the default.
  No	DPX does not delete any Exchange logs.

• Exchange DAG Passive Copy

  Determines whether DPX will back up Exchange DAG from a passive node or an active node.

  Yes	Default setting. Back up Exchange DAG from a passive node.
  No	Back up Exchange DAG from an active node.

• Oracle RMAN Cataloging Control

  For Oracle backups, determines whether to synchronize the RMAN catalog after the job completes. Yes is the default.

  Yes	Synchronize the RMAN catalog after the job completes.
  No	Do not synchronize the RMAN catalog after the job completes. If you choose this option, the job is not cataloged in RMAN.

• Backup and Truncate SQL Logs

  This option controls truncation of SQL Server Transaction Logs during a Block backup. This option must be set to "Yes" in order to enable Point-in-Time restore.

  Yes	SQL Server transaction logs are truncated on the source database server after the backup completes. To find the backed up SQL logs,refer to the message "BACKUP LOG TO DISK..." in the Job Log or to Event 18265 in the Application Event Log.
  No	SQL Server transaction logs are not truncated and will therefore continue to grow on the source database server. To truncate translation logs, run SQL Server maintenance on the source machine. No is the default.

• Resolution Auto Cancel Interval (Minutes)

  This option comes into play when DPX attempts to retry a failed snapshot. If the retry is unresponsive, DPX initiates job auto-cancel after this interval, in minutes, has lapsed.

• Resolution Retry Count

  Determines how many times to retry a failed snapshot attempt.

• Wait Interval Between Retries (Minutes)

  Determines the amount of time (in minutes) to wait between retry attempts for a failed snapshot attempt.

• Data Transfer Auto Cancel Interval (Minutes)

  This option comes into play if a job does not get an indication of “active” status during the data transfer phase of the job. DPX initiates job cancellation after this interval, in minutes, has lapsed.

• Backup IA-Mapped Drive

  This is an option to backup IA- Mapped drives from DPX snapshots.

Note. The default setting is NO and should be changed to YES in order to backup the drives.