Restore Data - NetApp NAS NDMP iDataAgent - Full System Restore

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Overview

Using the Same NAS Filer - Rebuild a Filer Using the Original Configuration Options

Using a New NAS Filer - Restoring Your Data to a Different Filer in a Three-Way Restore

Overview

NAS Disaster Recovery is the process of restoring a NetApp filer. There are two ways to accomplish this. Using the Same NetApp Filer - Rebuilding a Filer Using the Original Configuration Options Using a New NetApp Filer - Restoring Your Data to a Different Filer in a Three-Way Restore The restore process is performed at the backup set level. If the client has two or more backup sets, be prepared to identify the backup set whose data you want restored during the restore process. (In general, all backup sets of a given client encompass the entire file system; however, backup filters, which can be unique, can introduce differences.) Restoring a NAS filer may require re-installing the NAS operating system. The flowchart below illustrates the workflow for restoring a NetApp NAS NDMP iDataAgent.

Using the Same NAS Filer - Rebuild a Filer Using the Original Configuration Options

The following procedure describes the pre-requisites and procedure to recover data for NetApp NAS NDMP file server after it has crashed:

Before You Begin

Ensure the following before restoring a NetApp NAS NDMP filer.

• The target computer has the same fully qualified network name as the original.
• You have the same login and password for your NDMP account.
• Try to match the general hardware configuration of the original filer model and disk shelf configuration.
• If your filer is connected to a library, make sure that you can match the original physical connections between the filer and the library.
• If you have a tape drive connected to the filer, make sure that you have the same type of tape drive to that of the original (i.e., DLT 7000, EXB 8900).
• Match the local volume configuration and number of volumes to that of the original.
• Match the number and type (i.e., Unix, ntfs, mixed) of qtrees to that of the original.
• Your volumes have the same storage capacity as that of the original (or greater).

To rebuild a NetApp NAS NDMP filer using the original configuration options:

1. If your filer is connected to a library, set up the new physical connections of your filer to match the original.
2. Ensure that your current hardware configuration matches that of the original. If your filer was connected to a tape drive or library, ensure that your tape drive or library has the same settings as the original. If it does not, do the following:
   • Select Library and Drive Configuration.
   • Right click the appropriate tape drive (or library).
   • Select the correct drive type and type the correct access path.
3. Load the same version of the operating system Data ONTAP to your filer.
4. Run the sysconfig -t command to ensure that the names of your tape drives match the access paths of your originals.
5. Configure your filer using the Setup command.

   You must have the same host name, login name, and password as your original filer.

6. If you want to reconfigure a filer to masquerade as the original one with the same host name, change the login and password. To do this:
   • Enter a CommCell console.
   • Click the filer client you are restoring.
   • Right click the NetApp iDataAgent icon, and then click Properties.
   • Click Change Account.
   • Change the password and login information to match those of the original filer.
   • Click OK.
7. Use the volume commands to configure your RAID arrays. Your volumes must be of the same number and size as the originals to accommodate the restored data.
8. Use the Qtree command to recreate your original qtrees.
9. Make sure that NDMP is enabled on the filer. This can be done in the following two ways:
   • From a filer command line, run the ndmpd on command. You must then edit the /etc/re file on the filer and add the command to the end of the file. This ensures that NDMP will be enabled each time the filer is rebooted.
   • From a standard web browser, enter the URL: http://filername/na_admin. Login using your login and password. Select NDMP. Click Enable NDMP. NDMP is now enabled and will start automatically each time the filer is rebooted. Configure CIFS shares and NFS exports.
10. Start restoring your volumes and qtrees.

    Do not restore data to the /, /vol/vol0/ or /etc directories. Doing so will overwrite your configuration data. If /vol/vol0 contained user data that must be restored, restore the qtrees or subdirectories individually.

You have now completed your full system restore job.

Using a New NAS Filer - Restoring Your Data to a Different Filer in a Three-Way Restore

The following procedure describes the pre-requisites and procedure to recover data for NetApp NAS NDMP file server after a NAS computer crash:

Before You Begin

Please ensure the following before restoring your data to another NetApp NAS NDMP filer.

• The target computer has the same fully qualified network name as the original.
• You have the same login and password for your NDMP account.
• Try to match the general hardware configuration of the original filer model and disk shelf configuration.
• If your filer is connected to a library, make sure that you can match the original physical connections between the filer and the library.
• If you have a tape drive connected to the filer, make sure that you have the same type of tape drive to that of the original (i.e., DLT 7000, EXB 8900).
• Match the local volume configuration and number of volumes to that of the original.
• Match the number and type (i.e., Unix, ntfs, mixed) of qtrees to that of the original.
• Your volumes have the same storage capacity as that of the original (or greater).

To restore your data to another filer by performing a three-way restore:

1. If the destination filer is not already a client of the CommCell, set up a new client using NAS Client Configuration.

   The act of configuring a new client consumes a license. You may want to delete the old filer to free up a license. However, do not delete the old client until its files have been restored. You may want to keep the old client in the CommCell until you are sure that its backup archives will no longer be needed. For example, if your site policy requires a six month retention of backups, then you must keep the old client configuration for six months.

2. Right click the default backup set from the original filer name, click All Tasks, and then click Browse Backup Data.
3. From the Browse Options dialog box, select the browse options that you want to use and click OK.
4. In the Browse window, use the File System tree to open the structure of the NetApp NAS NDMP File System and select the data you want to restore.

   Do not restore data to the /, /vol/vol0/ or /etc directories. Doing so will overwrite your configuration data. If /vol/vol0 contained user data that must be restored, restore the qtrees or subdirectories individually.

5. Click Recover All Selected.
6. From the Restore Options for All Selected Items dialog box, select Restore to Same Paths if you would like to restore the data with the same path in which it was backed up. If you would like to restore data to a different path, type the new path in the Destination Folder field.
7. Select the name of the destination filer from the Destination Computer list.
8. Click OK.

The system begins restoring your data. You can track the restore progress in the Job Controller.