Dell PowerVault 725N (Rackmount NAS Appliance) - Manual (Page 116)

Back to Contents Page
Recovering and Restoring the System
Dell™ PowerVault™ 725N NAS Systems Administrator's Guide
Introduction to Software-RAID NAS System Recovery and Restoration Procedures
Introduction to Hardware-RAID NAS System Recovery and Restoration Procedures
Reinstalling the Operating System
Restoring System-State Data After Reinstallation
Restoring Initial System Setup
This section provides instructions on how to recover and restore a software-RAID NAS system and a hardware-RAID NAS system. The recovery and restoration
procedures are different for each system type. If your NAS system uses software RAID, see "
Introduction to Software-RAID NAS System Recovery and
Restoration Procedures s" in this section of the guide. If your NAS system uses hardware-RAID, see " Introduction to Hardware-RAID NAS System Recovery and
Restoration Procedures " in this section of the guide.
For instructions on how to determine if you have a software-RAID or a hardware-RAID NAS system, see " Determining if a NAS System Uses Software RAID or
Hardware RAID " in the "NAS Manager" section of this guide.
Introduction to Software-RAID NAS System Recovery and Restoration Procedures
This subsection provides instructions on how to recover the software-RAID NAS system if the operating system or a hard drive fails. Additionally, this section
provides information for possible solutions that do not require restoring the operating system or hard drives.
Because your NAS system is designed to have redundancy, it can recover from certain hardware and software failures. In some situations, it can recover
automatically, and in others, you must have administrator privileges and manually intervene to recover the NAS system.
Use the following methods in the order listed to restore your software-RAID NAS system:
1. Check all of the items in " Troubleshooting Software-RAID NAS Systems " in this section of the guide.
2. Follow the procedures described in " Booting From the Software-RAID NAS System Recovery Operating System Mirror Hard Drives " in this section of the
guide.
3. Reinstall the operating system as described in " Recovering From a Software-RAID Operating System Failure " in this section of the guide.
Troubleshooting Software-RAID NAS Systems
This section provides checks and solutions to try before you reinstall your operating system or replace a hard drive. Some of the checks require you to observe
the LEDs on the front and back of the NAS system. For more information about the LEDs, see your Installation and Troubleshooting Guide.
l Does the power LED show that the NAS system is turned on?
Ensure that the power cable connected to the NAS system and a power source and that the NAS system is turned on.
l Are the link LEDs on the back of the NAS system and any network switches to which it may be connected illuminated?
Ensure that the Ethernet cable is securely connected to the NAS system and a functioning Ethernet jack.
l Are you using a standard Ethernet cable to connect to the network?
NOTICE: Ensure that you use the correct recovery and restoration procedures for your NAS system RAID type.
NOTICE: If your NAS system uses hardware RAID, see " Introduction to Hardware-RAID NAS System Recovery and Restoration Procedures " in this
section of the guide. Do not use the following procedures to recover and restore a hardware-RAID NAS system. For instructions on how to determine if
you have a software-RAID or a hardware-RAID NAS system, see "
Determining if a NAS System Uses Software RAID or Hardware RAID " in the "NAS
Manager" section of this guide.