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vRanger 7.6.5 - Integration Guide for EMC Data Domain Boost (DD Boost)

Modifying an interface group

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Administering Data Domain and DD Boost > Modifying an interface group > Modifying an interface group

Modifying an interface group

After the interface group is set up, you can add or delete interfaces from the group. The following example shows how to remove an interface from the configured interface group on the EMC® Data Domain® system.

Make sure that no jobs are active from vRanger to the Data Domain system on the interface that you want to remove from the group. You can complete this step from the Data Domain system by checking the status of existing connections in the interface group by entering the following command:

Sample Output:

Remove the interface from the group on Data Domain system:

After this step, the interface 192.168.1.3 is released from the group and is no longer used by the DD Boost Storage Server for any jobs from the backup servers.

To change the interface that is added to the interface group on the Data Domain system at the network layer, remove the interface from the group and add it back.

If you use the net command to change the interface, such as enabling an interface that is configured for ifgroup, run the ddboost show connections command to update the load balancing view. This updating allows the ifgroup to use the interface. For more information about the ddboost show connections command, see Show connections.

Removing advanced load balancing and link failover configuration

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Administering Data Domain and DD Boost > Modifying an interface group > Removing advanced load balancing and link failover configuration

Removing advanced load balancing and link failover configuration

The following example illustrates removing a configured interface group on the EMC® Data Domain® system.

You can complete this step from the Data Domain system by checking the status of existing connections in the interface group with the following command:

All the interfaces are released from the group. However, backup servers can still access the DD Boost storage server on the Data Domain system on the interface registered with vRanger. In the preceding example, the Data Domain system is still registered with vRanger using 192.168.1.1.

Setting network timeouts

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Administering Data Domain and DD Boost > Modifying an interface group > Setting network timeouts

Setting network timeouts

Backup and restore jobs often take a long time to complete. Although the EMC® Data Domain® Boost (DD Boost™) Library can recover from temporary network interruptions, the operating system on vRanger might terminate a job prematurely if vRanger timeouts are set too low.

EMC recommends setting timeouts to at least 30 minutes (1800 seconds).

NOTE: After losing a network connection, administrators should issue the ddboost reset stats command to clear job connections.

Using the DD Boost commands

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Administering Data Domain and DD Boost > Using the DD Boost commands

Using the DD Boost commands

This topic describes the EMC® Data Domain® Boost (DD Boost™) commands that you use to manage the DD Boost feature on the EMC® Data Domain® system.

The ddboost command manages the integration of Data Domain systems and disk backup devices. DD Boost is a licensed feature. If basic options do not work, verify that the proper licensing has been implemented on your Data Domain system. The ddboost command includes the following options.

Access

Table 1.  

Description

Manage DD Boost access for clients.

Syntax

ddboost access add clients: Add clients to a DD Boost access list.
ddboost access delete clients: Delete clients from DD Boost access list.
ddboost access reset: Reset DD Boost client access list to factory default.
ddboost access show: Show DD Boost client access list.
Destroy

Description

Administrators use this command to delete all storage units and their contents from the Data Domain system. The command permanently removes all the data (files) contained in the storage units.

You must also manually remove (expire) the corresponding catalog entries.

Syntax

Disable

Description

Administrators use this command to disable DD Boost for the Data Domain system.

Syntax

Enable

Description

Administrators use this command to enable DD Boost for the Data Domain system.

Whenever the user, user ID (UID), or group ID (GID) changes, the Data Domain system updates all files and storage units the next time that the ddboost enable command is issued.

Syntax

Ifgroup add interface

Description

Administrators use this command to add an IP address to a private network that is to process data transfer. The IP address must be configured on the Data Domain system, and its interface enabled.

The command checks if the IP address is valid. If not, a message reports the IP address is invalid — either because it is not configured on the Data Domain system, or its interface is not enabled. Use the net show settings or net show config commands to view available IP addresses.

If the IP is valid, the message IP added to list is displayed. After adding an IP address as an interface, you need to enable Advanced Load Balancing and Link Failover using the ddboost ifgroup enable command.

Notes:

Syntax

Ifgroup del interface

Description

Administrators use this command to remove a valid IP address added as an interface.

If you are attempting to delete the last IP address interface, you are informed that doing so disables the ifgroup, and you are given the option of terminating this command.

Syntax

Ifgroup disable

Description

Administrators use this command to disable the Advanced Load Balancing and Link Failover option for new jobs. Currently running jobs are not affected and continue to run.

If DD Boost is disabled, the message disabled is displayed.

Syntax

Ifgroup enable

Description

Administrators use this command to enable Advanced Load Balancing and Link Failover. At least one IP address must have already been added.

Syntax

Ifgroup reset

Description

Administrators use this command to remove the interfaces for Advanced Load Balancing and Link Failover and to disable the ifgroup.

The ifgroup reset command is equivalent to issuing the ddboost ifgroup disable command followed by issuing multiple ddboost ifgroup del interface <IP address> commands.

Syntax

Ifgroup show config

Description

Display IP addresses added to the interface group.

Syntax

Option reset

Description

Administrators use this command to reset distributed segment processing to the default, which is enabled.

Syntax

Option set

Description

Administrators can use this command to enable or disable the distributed segment processing feature on the Data Domain operating system. By default, it is enabled. If this feature presents any problem for a backup server, use this command to disable the feature on the Data Domain system.

Distributed segment processing is supported only if the installed version of the DD Boost Library is version 2.2 or later, and the feature is enabled on the Data Domain operating system.

Notes:

Syntax

Option show

Description

Use this command to show whether the distributed segment processing option is enabled or disabled.

Syntax

Reset stats

Description

Administrators use this command as follows:

Syntax

Reset user-name

Description

Delete and reset the DD Boost user name.

Syntax

Set user-name

Description

Set the DD Boost user name when DD Boost is enabled.

Syntax

Show connections

Description

Use this command to show the number of active clients, and for each active client:

Syntax

Show histogram

Description

Use this command to display a DD Boost histogram for the Data Domain system.

op: The name of the NFS operation.
mean-ms: The mathematical mean time for completion of the operations.
stddev: The standard deviation for time to complete operations, derived from the mean time.
max-s: The maximum time taken for a single operation.
2,4,6,8, or 10ms: The number of operations that took less than the specified number of milliseconds (ms).
100ms: The number of operations that took between 10 ms and 100 ms.
1s: The number of operations that took between 100 ms and one second.
10s: The number of operations that took between 1 second and 10 seconds.
>10s: The number of operations that took over 10 seconds.

Syntax

Show stats

Description

Use this command to show the output of previous show stats command, the number of bytes written to and read from files contained in storage units, and the number of files created and deleted from storage units. The number of errors encountered for each operation is also shown. Optionally, you can show statistics for a specific number of seconds. The count displays the number of lines equal to the count value.

If distributed segment processing is enabled, the number of bytes transferred through distributed segment processing and the amount of compression achieved is displayed.

Syntax

Show user-name

Description

Display the current DD Boost user.

Syntax

Status

Description

Enter this command to determine whether DD Boost is enabled or disabled.

Syntax

Storage-unit create

Description

Administrators use this command to create a storage unit with a given name.

Syntax

Storage-unit delete

Description

Administrators use this command to delete a specified storage unit and all its contents. You must also manually remove (expire) the corresponding catalog entries.

Syntax

Storage-unit show

Description

Use this command to display the names of all storage units or, optionally, the names of all files in a specified storage unit.

To display the compression for all storage units (the original byte size, global compression, and local compression for all storage units), enter the compression option.

Syntax

 

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