In order to implement backup, it is required that the following NAS backup configurations have been implemented.
Preferences | Configuration Requirements |
|---|---|
NAS Backup Volume |
|
NAS Copy Group |
|
NAS Copy Pair |
|
When NAS backup configurations have not been implemented, or when the above configuration requirements of the NAS backup configurations have not been satisfied, implement the configurations of a NAS backup. Refer to "Set NAS Backup" in the Web Console Guide for information on the procedures for configuring the NAS backup.
Execute backup of the NAS volume with QuickOPC from Web Console.
Refer to "Backup of NAS Volume" in the Web Console Guide for information on the procedures for executing backup.
Information
If a NAS backup volume is mounted, setup values (shared status, access settings, etc.) in the shared folder within the NAS backup volume are setup values for the NAS volume at the time of execution of the backup.
Note
When backup is executed, even if the shared folder is set up so as to be accessible using FTP, information of the FTP settings information is not backed up.
Execute restoration of the NAS volume from Web Console.
Refer to "Restore to NAS Volume" in the Web Console Guide for information on the procedures for executing restoration.
Information
When executing a restore of the NAS volume, a completed backup is required. Confirm whether a backup has already been completed by referring to "Display Shared Folder" or "Display Backup Information" in the Web Console Guide.
Note
The shared folder and quota settings for the NAS volume that is to be restored are reconfigured as a part of the restore in accordance with the configuration information at the time of the backup. Perform operations regarding the shared folder and quota settings after confirming that the restore operation has completed.
While restoring data to a NAS volume, if you perform operations on the shared folder and quota settings in that NAS volume, an error may occur. In that case, after confirming the error message, try the operation again.
If the restore fails, data corruption may be occurring in the NAS volume. Remove the cause of the failure and re-execute the restore.
The shared folder name must be unique within the ETERNUS Disk storage system.
If the shared folder name is duplicated as a result of the restore operation, a "$" is appended to the head of the shared folder name and restore is executed. If the shared folder name is still duplicated despite the appended "$", a "$" is appended once more to the head of the shared folder name and restore is executed.
Also, for "homes" that is the shared folder for home directory, special care is required. If "$" is appended to the head of "homes" by restore, the restored shared folder "$homes" is handled as a shared folder to share files, not as a shared folder for home directory.
To access the past home directory under "$homes", enter the following format to the address bar or to the network drive mapping window:
When Active Directory is configured as an authentication server
\\nasInterfaceIpAddress\$homes\domainName@\userName\
When no authentication server is configured
\\nasInterfaceIpAddress\$homes\userName\
The restored shared folder "$homes" is accessible with the user set in Owner and Group.
The block size of NAS file system after a restore is set to the value specified for the NAS volume when executing a backup.
When backup is executed, even if the shared folder is set up so as to be accessible using FTP, information of the FTP settings information is not backed up. The FTP settings after restore are the values set before restore. If necessary, reset up the shared folder accessible using FTP. Refer to the ETERNUS Disk storage system manuals for FTP settings.
Only when all CMs and NAS Engines in the ETERNUS Disk storage system are in normal condition, a NAS volume can be backed up.
Confirming Status of Backup / Restoration
The status of the backup and restoration of the NAS volume can be confirmed from Web Console.
Refer to "Add/Display/Delete Copy Pair" in the Web Console Guide for information on the procedures for confirming the status.
Information
Confirm the copy group belonging to the copy pair by referring to "Display Shared Folder" or "Display Backup Information" in the Web Console Guide.
Note
There may be cases when the copy status that can be confirmed with Web Console does not match the success or failure of the backup / restoration of the NAS volume. Determine the success or failure of the backup from the operation history of backup / restoration. Refer to "Display Operation History" in the Web Console Guide for the display method of the operation history of backup/restoration.
Suspending Backup / Restoration
Suspend backup / restoration of the NAS volume from Web Console.
Refer to "Cancel Copy Session of Copy Pair" in the Web Console Guide for information on the procedures for suspension.
Information
Confirm the copy group belonging to the copy pair by referring to "Display Shared Folder" or "Display Backup Information" in the Web Console Guide.
Note
Suspension of the copying from the NAS volume to the NAS backup volume is implemented by the procedures for performing a secondary backup of the NAS volume.
When copying is suspended while physical copying is taking place, even if the backup is a success, the backed up data cannot be guaranteed.
Delete the NAS volume backup settings from Web Console.
Refer to "Delete NAS Backup Settings" in the Web Console Guide for information on how to delete the NAS backup settings.
When performing this operation, the copy session between the NAS volume and the NAS backup volume is forcefully stopped and the following settings are deleted:
Copy groups
Copy pairs
NAS backup volumes
In addition, with problems such as RAID failure, when recreating a NAS volume and restoring the NAS volume with a restore from the NAS backup volume, you can also select to keep the NAS backup volume.
Note
Copy sessions that exist between the NAS volume and the NAS backup volume are forcefully stopped. When keeping the NAS backup volume, perform this operation if there are no physical copy sessions or copy sessions in an error state.
When using the secondary backup of the NAS volume or inter-box backup/restore, stop the copy session in advance.
Do not delete the NAS backup settings related to this NAS volume while restoring the NAS volume. When deleting, the NAS volume data is not guaranteed.
