QNAP Systems Ts 253 User Guide

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LUN Backup 
 
The NAS supports backing up iSCSI LUNs to different storage locations (Windows, Linux, or 
local shared folders), restoring the LUNs to the NAS, or creating a LUN snapshot and mapping 
it to an iSCSI target. 
 
In this chapter, these topics are covered: 
Backing up iSCSI LUNs 
Restoring iSCSI LUNs 
Creating iSCSI LUN Snapshots 
Managing LUN Backup/Restore/Snapshot by Command Line 
 
Note: This function or its content is only applicable on some models. To check for...

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6. Specify the backup schedule, choose the backup period (Now, Hourly, Daily, Weekly, or 
Monthly) and click Next.  
7. The settings will be shown. Enter a name for the job or use the one generated by the 
NAS. Click Next. 
8. Click Finish to exit. 
9. The backup job is shown on the list. 
 
Refer to the table below for actions (the Action button) available to manage the backup 
jobs. 
Action Description 
Edit Edit the job settings. 
Delete Delete the job. 
Start Start the job immediately. 
Stop...

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Action Description 
Edit Edit the job settings. 
Delete Delete the job. 
Start Start the job immediately. 
Stop Stop the running job. 
View Logs View the job status and logs. 
 
Note: For Step 5 above:  
Overwrite existing LUN: Restore the iSCSI LUN and overwrite the existing LUN on the 
NAS. All the data on the original LUN will be overwritten. 
Create a new LUN: Restore the iSCSI LUN to the NAS as a new LUN. Enter the name 
and select the location of the new LUN. Make sure you have created...

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9. Go to Storage Manager > iSCSI Storage, and the snapshot LUN will be shown in the 
iSCSI Target List. Use iSCSI initiator software to connect to the iSCSI target and access 
the point-in-time data on the snapshot LUN.  
 
Note: The source LUN and snapshot LUN cannot be mounted on the same NAS or certain 
operating systems such as Windows 7 and Windows 2008 R2. In this case, mount the LUN 
snapshot to a different NAS or server. 
 
Managing LUN Backup/Restore/Snapshot by Command Line 
 
QNAP NAS...

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Virtual Disk 
 
You can use this function to add iSCSI targets of other NAS or storage servers to the NAS as virtual 
disks for storage capacity expansion. The NAS supports up to 8 virtual disks. 
 
Supported file systems: 
Format: Ext3, Ext4, FAT, NTFS, and HFS+. 
Mount: Ext3, Ext4, FAT, NTFS, and HFS+. 
 
Note: 
The NAS supports a virtual disk with a maximum size of 16TB. 
When a virtual disk (iSCSI target) is disconnected, the virtual disk will disappear from the 
interface and the...

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Action Description 
Edit Click this button to edit a virtual disk name or the authentication 
information of an iSCSI target. 
Connect Click this button to connect to an iSCSI target. 
Disconnect Click this button to disconnect an iSCSI target. 
Format Click this button to format a virtual disk as EXT3, EXT 4, FAT 32, NTFS, or 
HFS+ file system.  
Delete Click this button to delete a virtual disk or an iSCSI target. 
 
External Device 
You can use an external device as a virtual disk. Check the...

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Security 
 
Go to Control Panel > System > Security to configure relevant security settings for your 
NAS.  
 
 
Security Level 
 
Specify the IP address or network domain from which connections to the NAS are allowed or 
denied. When the connection of a host server is denied, all the protocols of that server are 
not allowed to connect to the NAS. After changing the settings, click Apply to save the 
changes. Network services will be restarted and current connections to the NAS will be...

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interface of the NAS by SSL and there will not be any alert or error message. The NAS only 
supports X.509 certificates and private keys. 
Replace Certificate: Upload a new certificate from a trusted provider, create a self-signed 
certificate, or get one from the open certificate authority “Let’s Encrypt”. 
Download Certificate: Download the secure certificate which is currently in use. 
Download Private Key: Download the private key which is currently in use. 
Restore Default Certificate...

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Hardware 
 
Go to Control Panel > System Settings > Hardware to configure the NAS hardware 
functions. 
 
 
In this chapter, the following topics are covered: 
General Settings (General) 
Audio Alert 
Smart Fan 
 
General Settings (General) 
 
Enable configuration reset switch: When this is enabled, you can press the reset 
button for 3 seconds to reset the administrator password and the system settings to 
default (NAS data will be retained) or 10 seconds for advanced system reset....

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System port: 8080 (system service port.) 
Security level: Low (Allows all connections.) 
LCD panel password: (blank); this feature is only for NAS models with LCD panels. 
VLAN will be disabled. 
Service binding: All NAS services will be run on all available network interfaces. 
o Advanced system reset: You will hear two beeps after continuously pressing the 
reset button. The NAS will reset all system settings to default (similar to the system 
reset in Administration > Restore to...