Veritas NetBackup™ Appliance Troubleshooting Guide
- About using the Troubleshooting Guide
- Best practices
- About troubleshooting tools
- Working with log files
- Disaster recovery
- Disaster recovery scenarios
- Appliance sustained power interruption
- Appliance hardware failure
- Complete loss of appliance with recoverable attached storage disks
- NetBackup Appliance database corruption
- NetBackup Appliance catalog corruption
- NetBackup Appliance error messages
Setting a NetBackup 5330 storage shelf component to the Service Allowed mode
Before service or replacement can be performed on a Primary Storage Shelf or an Expansion Storage Shelf, the specific component of the unit must be set to the Service Allowed mode.
Typically, a failure automatically sets the component of the affected unit to the Service Allowed mode. When a warning of an impending failure occurs, the component is not automatically set to the Service Allowed mode. For this situation, you must set the component to the Service Allowed mode manually, by using the NetBackup Appliance Shell Menu.
In the Main_Menu > Support view, two main commands are available:
ServiceAllowed Set PrimaryShelf
This command is used with options to set the appropriate Primary Storage Shelf component to the Service Allowed mode.
ServiceAllowed Set ExpansionShelf
This command is used with options to set the appropriate Expansion Storage Shelf component to the Service Allowed mode.
The following describes the available command options for setting a Primary Storage Shelf component or an Expansion Storage Shelf component to the Service Allowed mode.
Table: Service Allowed command options
Storage unit | Command options |
---|---|
Primary Storage Shelf |
|
Expansion Storage Shelf |
|
Veritas requires that you perform this procedure only with assistance from Veritas Technical Support. It is important to understand that certain situations can adversely affect system operation. Care must be taken when you run the Service Allowed command options.
To keep your system at peak performance, fix each problem as it occurs and do not let problems accumulate. Multiple problems can degrade system performance and make servicing the system more difficult. Multiple problems can also increase the potential for a situation that may cause data loss.
The following describes how the Service Allowed mode may affect the system:
Degraded performance
In some situations, setting a component to the Service Allowed mode can cause degraded performance. A message appears to alert you of this possibility before you proceed. For example, when you use the Controller option for the Primary Shelf, the following message appears:
Support> ServiceAllowed Set PrimaryShelf Controller A on Service allowed flag is used for component replacement. Setting this flag may cause performance degradation due to write cache being turned off. >> Do you want to continue? (yes, no):
RAID volume status in Degraded state
When you use the HDD option to set a hard disk drive to the Service Allowed mode, the following message appears:
Support> ServiceAllowed Set PrimaryShelf HDD 1 2 on Service allowed flag is used for component replacement. Before you set this flag, run the 'Monitor->Hardware ShowHealth PrimaryShelf RAID' command to make sure that this Hard Disk Drive (HDD) is in a RAID volume with a status of Optimal. If the RAID volume status is not Optimal, executing this command creates a RISK OF POTENTIAL DATA LOSS. >> Do you want to continue? (yes, no): no
In this situation, the best practice is to enter no. Then you must resolve the current RAID volume issue to return it to Optimal status. Only then can you proceed with setting the affected hard disk drive to the Service Allowed mode.
Veritas recommends that before you attempt to set any hard disk drive to the Service Allowed mode, first run the Monitor > Hardware ShowHealth PrimaryShelf RAID command. Check to make sure that the hard disk drive that you want to set to the Service Allowed mode is in a RAID volume with Optimal status.
Warning:
Make sure that you contact and work with Veritas Technical Support for guidance to avoid any situation that may cause the potential for data loss.
The following procedure describes how to set a Primary Storage Shelf or an Expansion Storage Shelf component to the Service Allowed mode.
To set a Primary Storage Shelf or an Expansion Storage Shelf component to the Service Allowed mode
- Contact Veritas Technical Support and inform the representative that you need to set a storage shelf component to the Service Allowed mode.
Allow the representative to assist you with the remaining steps that follow.
- Log in to the NetBackup Appliance Shell Menu.
- Enter Main_Menu > Support.
- From the list of commands in Table: Service Allowed command options, enter the appropriate command.
Note:
Before you attempt to set a hard disk drive to the Service Allowed mode, first run the Monitor > Hardware ShowHealth PrimaryShelf RAID command. Refer to the "Precautions and guidelines" section for more information.
- Verify that the component is in the Service Allowed mode by checking that the blue Service Action Allowed LED on the affected storage shelf is on.
- Perform the necessary work on the affected unit.
After the work has been completed and the unit has been restored to normal operation, the Service Allowed mode is cleared automatically.