QNAP Systems Ts 253 User Guide

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LUN Usage Light blue: Allocated 
Red line: Alert threshold 
 
For details on Storage Pools, Volumes, and RAID Groups, refer to the following links:  
Storage Pools 
Volumes 
RAID Groups  

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Storage Pools 
 
A storage pool is designed to aggregate physical hard disk drives into a large storage space and to 
provide enhanced RAID protection for it. You can perform the following actions to manage storage 
pools:  
Creating New Storage Pools 
Removing Storage Pools 
Safely Detaching Storage Pools 
Expanding Storage Pools 
Setting a Threshold 
Setting Snapshot Reservation 
Creating New Volumes for Storage Pools 
Creating New iSCSI LUNs for Storage Pools 
 
Note:...

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The selected storage pool will be removed. 
 
Note: Before you remove a storage pool, be sure to remove all volumes and LUNs on that 
storage pool. 
 
Safely Detaching Storage Pools 
 
Follow these steps to safely detach a storage pool: 
1. Go to Storage Manager > STORAGE > Storage Space.  
2. Double click a storage pool to be removed to bring up the Storage Pool Management page. 
3. Click Remove > Safely Detach Pool. 
4. Click Apply. 
5. The selected storage pool will be removed. 
 
Note: After...

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2. Double click a storage pool to be expanded to bring up the Storage Pool Management page. 
3. Click Expand Pool, select Create and add a new RAID group and click Next. 
4. Select the enclosure unit, hard disk drive(s), RAID type and hot spare disk and click Next. 
5. Please note that if the type of the newly-created RAID group is different from that of the existing 
RAID group(s), the performance of the entire storage pool may be affected. To continue, click 
OK. 
6. Click Expand. 
7. Please note...

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Setting a Threshold 
  
The system will generate a warning message in system logs when the storage pool used size hits the 
threshold. To set a threshold value for a storage pool, follow these steps: 
1. Go to Storage Manager > STORAGE > Storage Space.  
2. Double click a storage pool to set a threshold to bring up the Storage Pool Management page. 
3. Click Actions > Set Threshold.  
4. Enter a value for alert threshold and click Apply. 
  
Setting Snapshot Reservation 
 
You can set snapshot...

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1. Go to Storage Manager > STORAGE > Storage Space.  
2. Double click a storage pool. 
3. Click Create> New Volume. Follow the onscreen instructions to finish the creation process. For 
more details, please refer to the Volumes section. 
  
Creating New iSCSI LUNs for Storage Pools 
  
To create a new iSCSI LUN for a storage pool, follow these steps: 
1. Go to Storage Manager > STORAGE > Storage Space.  
2. Double click a storage pool. 
3. Click Create> New iSCSI LUN. Follow the onscreen...

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Volumes 
 
A volume is formatted by the file system to store share folders and files. Users can manage, monitor, 
create, or delete a logical volume on this page. The following topics are covered in this chapter: 
Creating New Volumes 
Removing Volumes 
Expanding Volumes 
Available Volume operations 
Configuring Alert Threshold 
Check File System 
Creating New Shared Folders 
Snapshot 
Managing Previous Versions in Windows 
Encryption 
Setting Thin Provisioning Space...

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Bytes 
per 
Inode 
Max. Size of Volume Max. Number of Files/Folders 
) 
32768 127.99 TB 
65536 250 TB 
 
6. Confirm your settings and click Finish. 
7. Please note that all data on the selected hard drive(s) will be erased. Click OK if you are certain 
about this. 
8. The new volume will be created. 
  
Note: The hot spare disk feature is only available for RAID 1, RAID 5, RAID 6 and RAID 
10. For other RAID types, the hot spare disk field will be grayed out. 
 
Follow these steps to create a new,...

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provisioning, volume space is fully utilized. 
A thick volume is usually more efficient for high frequency read/write activities. 
Because the space has been allocated for the volume, the predicament of insufficient 
physical space can be avoided, but the use of space is relatively inefficient. 
NAS models that do not support Storage Pools can only create Static Single Volumes. 
Please refer to the QNAP website, product information, and software specifications for 
more details.  
 
Removing...

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Configuring Alert Threshold 
 
The alert threshold is used to remind users when the capacity of a chosen volume is used up to the 
specified threshold level. A warning message will pop up when the specified threshold is reached. 
To set an alert threshold, select a volume in Storage Space to bring up the Volume Management 
page, click Actions > Set Threshold, enter the threshold level and click Apply. The alert 
threshold is set. 
 
Check File System 
 
If you receive the error message File...