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QuTS hero 5.0.x

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Shared Folder Management

To manage a shared folder, go to Storage & Snapshots > Storage > Storage/Snapshots, select a shared folder, and then click Manage.




QuTS hero compresses the data in the shared folder to reduce the size of stored data. Enabling compression also reduces the total number of blocks that QuTS hero needs to read and write, increasing read and write speeds.


Compression does not impact read/write and processor performance on ZFS filesystems. Only disable this setting when necessary.


QuTS hero reduces the amount of storage needed by eliminating duplicate copies of repeated data.


To enable deduplication your NAS must have at least 16 GB of memory.

SSD cache

QuTS hero adds data from this folder to the SSD cache to improve read performance.


Shared folders and LUNs created in an all-SSD storage pool cannot use the SSD cache.

Fast clone

Fast Clone enables QuTS hero to create copies of files faster. It also saves storage space by modifying file metadata, allowing original and copied files to share the same data blocks.

  • To enable this setting, Thin provision must be selected.

  • Fast Clone only works when the copied file is created in the shared folder containing the original file.

  • Fast Clone does not improve the speed of snapshot restoration operations such as restoring files from a snapshot, snapshot revert, and snapshot clone.

Synchronous I/O

Select the ZFS Intent Log I/O mode to improve data consistency or performance. There are three modes:

  • All:

    All I/O transactions are treated as synchronous and are always written and flushed to a non-volatile storage (such as a SSD or HDD). This option gives the best data consistency, but might have a small impact on performance.

  • Auto:

    QuTS hero uses synchronous I/O or asynchronous I/O based on the application and the type of I/O request.

  • None:

    All I/O transactions are treated as asynchronous. This option gives the highest performance, but has a higher risk of data loss in the event of a power outage. Ensure that a UPS (uninterrupted power supply) is installed when using this option.


Delete the shared folder.

Resize Shared Folder

Change the storage capacity of a shared folder.

For details, see:


Configure the settings of the shared folder.

For details, see Shared Folder Actions.

View data reduction information

View statistics related to compression and deduplication.

For details, see Data Reduction.