- Notes, cautions, and warnings
- Introduction to the DR Series System Documentation
- Understanding
the DR Series System
- About the DR Series System
- DR Series Data Storage Concepts
- Supported File System and Tape Access Protocols
- Rapid NFS and Rapid CIFS
- DR Rapid for the DR Series System
- RDA with OST for the DR Series System
- Supported Virtual Tape Library Access Protocols
- DR Series System Hardware and Data Operations
- Supported Software and Hardware
- DR Series Hardware System — Expansion Shelf Cabling
- Adding a DR Series Hardware System Expansion Shelf
- Setting Up the DR Series System Hardware
- Configuring
the DR Series System Settings
- Configuring Networking Settings
- Managing the DR Series System Password
- Shutting Down the DR Series System
- Rebooting the DR Series System
- Configuring Active Directory Settings
- Configuring Local Workgroup Users Settings
- Configuring Email Alert Settings
- Configuring Administrator Contact Information
- Managing Passwords
- Configuring an Email Relay Host
- Configuring System Date and Time Settings
- Understanding Containers
- Configuring Share-Level Security
- Managing DR Series Storage Operations
- Monitoring the DR Series System
- Using Global View
- Using the DR Series System Support Options
- Configuring
and Using Rapid NFS and Rapid CIFS
- Rapid NFS and Rapid CIFS Benefits
- Best Practices: Rapid NFS
- Best Practices: Rapid CIFS
- Setting Client-Side Optimization
- Installing the Rapid NFS Plug-In
- Installing the Rapid CIFS Plug-In
- Determining If Your System Is Using Rapid NFS or Rapid CIFS
- Viewing the Rapid NFS and Rapid CIFS Logs
- Monitoring Performance
- Uninstalling the Rapid NFS Plug-In
- Uninstalling the Rapid CIFS Plug-In
- Configuring
and Using Rapid Data Access with Dell NetVault Backup and with Dell
vRanger
- Overview
- Guidelines for using RDA with NetVault Backup and with vRanger
- Best Practices: RDA with NetVault Backup and vRanger and the DR Series System
- Setting Client-Side Optimization
- Adding RDS Devices in NetVault Backup
- Removing RDS Devices From NetVault Backup
- Backing Up Data on the RDS Container Using NetVault Backup
- Replicating Data to a RDS Container using NetVault Backup
- Restoring Data From a DR Series System using NetVault Backup
- Supported DR Series System CLI Commands for RDS
- Configuring
and Using RDA with OST
- Understanding RDA with OST
- Guidelines
- Terminology
- Supported RDA with OST Software and Components
- Best Practices: RDA with OST and the DR Series System
- Setting Client-Side Optimization
- Configuring an LSU
- Installing the RDA with OST Plug-In
- Configuring DR Series System Information Using NetBackup
- Backing Up Data From a DR Series System (NetBackup)
- Using Backup Exec With a DR Series System (Windows)
- Understanding the OST CLI Commands
- Understanding RDA with OST Plug-In Diagnostic Logs
- Collecting Diagnostics Using a Linux Utility
- Guidelines for Gathering Media Server Information
- Configuring and Using VTL
- Configuring and Using Encryption at Rest
- Troubleshooting and Maintenance
- Supported Ports in a DR Series System
- Getting Help
Dell DR Series System Administrator Guide
About the DR Series System Maintenance Mode
In general,
the DR Series system enters the
Maintenance mode whenever the
file system has encountered an issue that prevents it from operating
normally.
When in its Maintenance mode, the filesystem is in a read-only state, and the system runs the following maintenance-based operations:
- NOTE: Whenever the DR Series systems enters or exits from the Maintenance mode state, all communication via protocols is lost.
- Runs an internal filesystem check.
- Generates a filesystem status report (if the filesystem check finds no issues, the DR Series system switches back to Operational mode without user intervention).
If the filesystem check finds issues, you can choose to make repairs (using Confirm Repair Filesystem) or ignore the detected issue (using Skip Repair Filesystem), at which point the system switches back to Operational mode.
The
Maintenance mode process displays a number of stages,
indicated on the Maintenance Mode progress bar, which include:
- Preparing for Filesystem Check
- Scan in Progress
- Completed Generating Report
- NOTE: If the Filesystem Check detects any repairable files, it generates a Repair Report that identifies these reported files. The Maintenance Mode progress bar halts at the Completed Generating Repair stage, and remains in Maintenance mode until you click Confirm Repair Filesystem. The DR Series system does not advance to the Switching to Operation Mode stage until the filesystem repair is completed.
- Switching to Operational Mode
- Operational Mode (Normal State)
The
Maintenance Mode page provides the following
information:
- Maintenance Mode Progress bar:
- Displays the five stages of Maintenance mode
- Updates the progress bar as each stage completes
- NOTE: If an alert displays above the Maintenance Mode progress bar, this indicates that the filesystem check has completed, and it has generated a report on the repairable files (which are displayed in the Repair Report pane under the Maintenance Mode progress bar). To repair all of the reported files listed in the Repair Report, you must click Confirm Repair Filesystem.
- Repair Report:
- Displays a list of repairable filesystem files that were detected in the Filesystem Check.
- Identifies the repairable files by Container ID, File/Inode/Directory location, and a brief reason for failure.
- Provides a search capability that allows you to click prev or next to display the previous or next page in the Repair Report, or lets you display a specific page number of the Repair Report by entering this number in the Goto page and click go.
- System Information pane:
- System Name
- Software Version
- Current Date/Time
- iDRAC IP Address
- Support Information
- Service Tag
- Last Diagnostic Run
- BIOS Version
After the DR Series system enters
Maintenance mode, there can only be two possible outcome states:
- Operational mode (Normal State): where the filesystem check was successful, and no system files need to be repaired (Filesystem Check: successful).
- Maintenance mode has halted: where the filesystem check detected one or more repairable files (Filesystem Check: unsuccessful).
Filesystem Check — Successful: when the Maintenance mode successfully completes all of its stages, the DR Series system displays its status as having entered Operational mode (Normal State). Only after the Maintenance mode has successfully completed its internal check can it return to an Operational mode.
To return to the Operational mode, click Go to Dashboard on the Maintenance Mode page options bar. Go to Dashboard is only active when all of the internal system checks have completed and the progress bar indicates that all stages have been completed.
- NOTE: You may encounter issues when using data management agents (DMAs) such as NetBackup with expired backup images when the DR Series system is in its Maintenance mode.
- NOTE: When in Maintenance mode, image expiration fails because the DR Series system is in a read-only state. If this occurs, the DMA assumes that the backup images have expired. However, the DR Series system administrator may be unaware that the backup data images still reside on the DR Series system.
Filesystem Check — Unsuccessful: when the Maintenance mode halts at the Completed Generating Report stage, this indicates that the filesystem check detected some repairable files, and listed them in the Repair Report pane on the Maintenance Mode page.
To return to the Operational mode, click Confirm Repair Filesystem on the Maintenance Mode page options bar to repair the files listed in the Repair Report. Confirm Repair Filesystem is the only active option you can select when the progress bar indicates that some filesystem files are in need of repair.
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