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NetVault 12.4 - Administration Guide

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 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

Viewing tape drive details

The Manage Devices page shows all the devices that have been added to the NetVault Backup Server. The current status of the devices is depicted using the following light icons.

 
Table 100. Device status icons
Status Indicator
Description

Green light

Device is online and available for use.

Yellow light

Device is in use. NetVault Backup is able to detect the device, but unable to access it for backup or restore jobs.

Red light

Device is currently offline. NetVault Backup can detect the device but it cannot be accessed for backup or restore jobs.

Red cross

Device is unavailable (the SCSI cable is disconnected, the device is removed, or any other reason). NetVault Backup cannot detect the device.

To view tape drive details:
1
In the Navigation pane, click Manage Devices. Select Tree View.
2
To view the details of a particular device, click the corresponding device and then click Status.
3
The device status dialog box includes the information under the following tabs:
•
Details: This area shows general information about the drive:
•
Name: Drive name.
•
Machine: Machine name.
•
Drive status: Online or offline.
•
Media status: Unloaded or empty.
•
Drive Statistics: This area shows the drive usage statistics:
•
Total Data Written: Total amount of data written using the drive.
•
Total Data Read: Total amount of data read using the drive.
•
Write Errors: Number of write errors reported.
•
Read Errors: Number of read errors reported.
•
Date Last Written: Date on which the last write operation was performed.
•
Date Last Read: Date on which the last read operation was performed.
•
Library Info
•
Name: Library name.
•
Physical slot position: Physical slot number.
•
Logical slot position: Logical slot number.
•
Cleaning: This area shows the drive cleaning statistics:
•
Date Last Cleaned: Date on which the drive last cleaning operation was performed.
•
Time Since Last Cleaning: Time elapsed since the last automatic or manual cleaning operation.
•
Times Cleaned: Number of times the drive has been cleaned.
•
Data Transferred Since Last Clean: Amount of data read or written since the last cleaning operation.
•
Time In Use Since Last Clean: Duration of time the drive has been used for read or write operations since the last cleaning operation.
•
Soft Errors Since Last Clean: Number of read or write errors reported since the last cleaning operation.
•
Statistics
•
Total Data Written: Total amount of data written using the drive.
•
Total Data Read: Total amount of data read using the drive.
•
Total Write Errors: Total number of write errors reported.
•
Total Read Errors: Total number of read errors reported.
•
Time Writing: Time taken for writing operation.
•
Time Reading: Time taken for reading operation.
4
Click OK to close the Details dialog box.
5
The slot status dialog box includes the information under the following tabs:
•
Slot
•
Library Info
•
Name: Library name.
•
Physical slot position: Physical position of the slot.
•
Logical slot position: Logical position of the slot.
•
Locked by: This option is displayed if a media is present in the slot or the slot is reserved.
•
Media: This section is similar to the Media section for the drives described earlier in this section.
6
Click OK to close the Details dialog box.

Configuring physical tape drives

To configure options for a tape drive:
1
In the Navigation pane, click Manage Devices.
2
In the list of devices, locate and click the drive to configure.
3
Click Configure.
4
In the Edit Drive dialog box, configure the settings in the following tabs:
•
NDMP Configuration: The NDMP parameters are available here. The default settings for any parameter on this tab must not be changed unless otherwise advised by Quest Support. For more information about these settings, see NDMP settings.
•
Configuration: Set the required parameters here.The default settings for any parameter on this tab must not be changed unless otherwise advised by Quest Support. For more information about these settings, see General settings for tape drives.
•
Performance: For more information about these settings, see Drive performance settings.
•
Statistics: For more information about these settings, see Statistics collection settings.
•
SCSI Configuration: The default timeout value for the different types of SCSI commands is set to zero, which correspond to the following intervals:
•
Fast SCSI Commands – 300 seconds
•
Slow SCSI Commands – 900 seconds
•
Very Slow SCSI Commands – 3 hours
An error is logged if a command execution does not complete within the specified interval. You should not change the default timeout for any of the SCSI commands unless otherwise advised by Quest Support.
•
Generic Cleaning: To configure generic cleaning settings for a tape drive, select this option. For more information about these settings, see Generic cleaning settings.
 
5
Click OK to save the settings and close the dialog box.

Optimal transfer buffer size

The following table provides examples of the optimal values that can be used for some drive types.

 
Table 101. Optimal transfer buffer size of different drive types
Drive type
Optimal transfer buffer size (in KiB)

Fast Modern Tape Drives

For example, LTO series, SDLT, and SAIT

65537 (64MiB + 1KiB)

Medium Speed Tape Drives

For example, DLT8000, DLT7000, and AIT-3

32769 (32MiB + 1KiB)

Older Professional Tape Drives

For example, DLT2000, DLT4000, and AIT-2

16385 (16MiB + 1KiB)

Older Low Capacity Low-end Drives

For example, EXB-8505, AIT-1, and DAT

8193 (8MiB + 1KiB)

Checking the status of a tape drive

To check the status of an offline tape drive:
1
In the Navigation pane, click Manage Devices.
2
In the list of devices, locate and click the drive.
3
Click Check, and then in the confirmation dialog box, click OK.
If the device is operational, its status is changed to “Available.”
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