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NetVault 12.4 - 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 Backup 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 Backup Working with client clusters Configuring default settings for NetVault Backup
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 Backup WebUI default settings Configuring NetVault Backup to use a specific VSS provider Configuring default settings using Txtconfig
Diagnostic tracing Managing diagnostic data Using the deviceconfig utility NetVault Backup processes Environment variables Network ports used by NetVault Backup Troubleshooting
Common errors Safe Mode in NetVault Backup

When using RDA for backups, only four streams are used at once

Description

When using RDA to back up 20 or more clients, in device activity, only four streams are used at once. Updating the setting in the configuration file at /config/dellrda config file from 32 streams to 512 streams and restarting NetVault services, yields the same result.

Symptom

When multiple backup jobs that target the same disk-based storage device are scheduled to start at the same time or within a small window of time, the following issues occur:

•
The target device is underused regarding the number of streams.
•
Some jobs remain in the “Waiting for media” state even if the device can run parallel jobs.
•
The completion time for small jobs increases by a few seconds or minutes.
Solution

These issues occur because the Media Manager uses a “quiesce time” setting to prevent assigning too many simultaneous jobs to a disk-based backup device. By default, the quiesce time is set to 10 seconds. Thus, after a job is assigned to a disk-based storage device, the Media Manager waits for 10 seconds before assigning the next job to the same device. You can change the default setting for quiesce time in the mediamgr.cfg file.

To change quiesce time for disk-based storage devices:
1
Open the mediamgr.cfg file in a text editor.
You can find this file in <NetVault Backup home>\config on Windows and <NetVault Backup home>/config on Linux.
2
Change the value for the following entry:
[Media Requests:RAS quiesce time]
Type=Range
Range=0,1000
Value=10
The default value is 10. To start the jobs at the same time, set the value to 0 (Value=0).
3
Save the file.

Note the following:

•
This setting applies to all disk-based storage devices (DR Series systems, EMC Data Domain Systems, and NetVault SmartDisk devices).
•
For shared NetVault SmartDisk devices, this value cannot be set to 0.

 

Safe Mode in NetVault Backup

The following error occurs when NetVault Backup is in Safe Mode, “NetVault Backup Server is in safe mode. Please contact your service provider.”

In this case tenant must contact MSP administrator.

The following error conditions can force NetVault Backup to run in Safe Mode:

•
A key process such as Media Manager or Schedule Manager fails to start.
•
The PostgreSQL database is unavailable or NetVault Backup is unable to connect to one or more databases.
•
The NetVault Backup Server is low on disk space.

In Safe mode MSP administrator must read the message from <Installation location>\config\safemode.cfg>, after login to NetVault Backup Server

This file keeps the cause of NetVault Backup Server to run in Safe Mode.

The following table describes the error types and possible options to resolve the issue identified in safemode.cfg:

 
Error type
Available options

Key process failures

When NetVault Backup enters safe mode due to this error, no options are provided to resolve the issue.

Database connection failures

Please validate PostgreSQL Service logs and resolve the issue. You can now restart the services, if issue persist contact NetVault support.

 

Low disk space issues

Reclaim space in NetVault Backup installation location and go to restart NetVault Backup in normal mode

•
 
•
Restart NetVault Backup in normal mode: Once NetVault Backup enters safe mode, it remains in this mode whether the error is resolved or not. To exit safe mode, restart NetVault Backup in normal mode.
Stop the NetVault Backup Process Manager and NetVault Backup PostgreSQL database server services. Remove safemode.cfg file from the following location: <Installation location>\config\safemode.cfg> and restart NetVault Backup PostgreSQL database server and NetVault Process Manager services.
•
Restart NetVault Backup with diagnostic tracing enabled: For diagnostic tracing consult Quest Technical Support.
•
Contact Quest Technical Support: If you are unable to resolve the issue, click this link to report the issue.

 

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