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NetVault 13.0.3 - Administration Guide for Managed Service Providers

Introduction Getting started Configuring clients Managing catalog search Configuring storage devices
About storage devices SAN considerations Quest DR Series systems Quest QoreStor NetVault SmartDisk EMC Data Domain Systems Snapshot Array Manager Virtual Tape Libraries Virtual standalone drives Shared Virtual Tape Libraries Physical tape devices Storage tiers
Backing up data Managing policies Restoring data Managing NetVault dashboard Managing jobs Monitoring logs Managing storage devices
Role-based access to manage storage devices Monitoring device activity Managing disk-based storage devices in list view Managing disk-based storage devices in tree view Managing the Snapshot Array Manager Managing tape libraries in list view Managing tape libraries in tree view Managing tape drives in list view Managing tape drives in tree view Adding shared devices
Managing storage media Managing user and group accounts Managing Tenant Monitoring events and configuring notifications Reporting in NetVault Working with client clusters Configuring default settings for NetVault
About configuring default settings Configuring encryption settings Configuring plug-in options Configuring default settings for post-scripts Configuring default settings for Verify Plug-in Configuring Deployment Manager Settings Configuring Job Manager settings Configuring Logging Daemon settings Configuring Media Manager settings Configuring Network Manager settings Configuring Process Manager settings Configuring RAS device settings Configuring Schedule Manager settings Configuring Web Service settings Configuring Auditor Daemon settings Configuring firewall settings Configuring general settings Configuring security settings Synchronizing NetVault Time Configuring the reporting utility Configuring NetVault WebUI default settings Configuring NetVault to use a specific VSS provider Configuring default settings using Txtconfig
Diagnostic tracing Managing diagnostic data Using the deviceconfig utility NetVault processes Environment variables Network ports used by NetVault Troubleshooting
Common errors Safe Mode in NetVault

Backing up data

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About backing up data
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Secondary Copy
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Snapshot-based backups
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Backup retirement
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Backup immutability
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About NetVault Sets
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Backup and recovery strategy
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Creating backup jobs
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Creating Schedule Sets
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Creating Target Sets
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Creating Source Sets for backup jobs
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Creating Backup Advanced Options Sets
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Managing sets

About backing up data

A backup is a copy of data, which can be used to restore and recover the original data after a data loss event.

NetVault offers a selection of plug-ins, which integrate with the native application programming interfaces (APIs) to provide application-consistent backups and recovery of data. Depending on the application type, these plug-ins provide multiple methods and options to back up the selected data.

In general, NetVault supports the following features:

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Full and selective backups
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Primary and secondary backups
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Normal and deduplicated backups
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Encrypted and non-encrypted backups
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Repeating and non-repeating backups
Backup job definition

To back up your data, you must create and submit a backup job. The NetVault WebUI provides a configuration wizard that helps you to perform this task. You can run the wizard from the Guided Configuration or Create Backup Job link in the Navigation pane.

A backup job definition includes the following components:

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Selection list
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Plug-in options
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Scheduling options
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Source device options (available only to the Plug-in for Consolidation, Plug-in for Data Copy, and Secondary Copy jobs)
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Target device and media options
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Advanced backup options

These components are stored in NetVault Sets. For more information about NetVault Sets, see About NetVault Sets.

Each backup job has a Job ID number and a Job Name. The Job ID number is an auto-generated number. The Job Name is a user‑defined string, which allows you to easily identify the job when monitoring its progress, viewing the job logs, or selecting a backup to restore data. A backup is stored as a Saveset on the media.

Backup indexes

NetVault generates a backup index for each backup, and writes this index to the backup media and NetVault Database.

The backup index includes a header which contains information required for restoring data. There is no maximum limit on the index file size or the number of items that you can include in a backup job.

Backup indexes stored in the NetVault Database are called Online Indexes. Online indexes allow you to quickly scan through the contents of a saveset without loading the media.

Secondary Copy

With a backup job, you can choose to run a Phase 2 job to create a Secondary Copy, which can be used for off‑site storage and disaster recovery purposes. NetVault provides two methods to create a Secondary Copy: Duplicate and Data Copy.

Duplicate

The Duplicate method creates an exact copy which is linked to the original backup. This method breaks down the backup into segments and copies the segments to the storage device. During restore, the segments from the primary backup and secondary copy are interchangeable. As it is not possible to mix unencrypted segments with encrypted segments during restore, you cannot enable or disable encryption for the Duplicate. If the original saveset is encrypted, the Duplicate method creates an encrypted copy. If the original saveset is not encrypted, this method creates an unencrypted copy.

Data Copy

The Data Copy method breaks down the backup into segments and copies the segments to the backup device. During restore, either the primary backup or the secondary copy is used to recover data; the segments from the primary backup and secondary copy are not interchangeable. Therefore, it is possible to enable encryption for the Data Copy when the primary copy is unencrypted. This option is useful when you want to use the deduplication option for primary backups.

The Data Copy job has two requests: one for read and another for write. When you set a priority to the Data Copy job, the first request (source request) receives the priority that the user assigns to it; the subsequent request (destination request) served as first priority in the background with priority 0 or 1. This implementation is to avoid waiting for the destination media request to be served if the source media is available.

 
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NOTE: If the primary copy is encrypted, the Data Copy method automatically creates an encrypted saveset.

Snapshot-based backups

On supported Windows platforms, NetVault plug-ins can use a hardware or software VSS provider to create consistent point-in-time copies of volumes, and use these snapshots to perform backups. The plug-ins can also create persistent snapshots, which can be used for data recovery operations.

Currently, the NetVault Plug-in for FileSystem supports snapshot-based backups.

There are multiple ways in which you can configure the plug-in to perform VSS-based backups. You can configure the plug-in to:

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Create and use snapshots to perform backups to disk- or tape-based storage devices.
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Create and use snapshots to perform backups to disk- or tape-based storage devices, and retain snapshots as backups on supported disk arrays.

To create and use persistent snapshots, the data that you want to back up must reside on supported disk arrays. For more information about OS versions, plug-in versions, and disk arrays that support persistent snapshots, see the Quest NetVaultCompatibility Guide.

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