QNAP TVS-472XT 4-Bay NAS Enclosure - Manual (Page 372)

QTS LUN Types
QTS supports the following types of LUN.
Tip
Block-based LUNs support more features and have faster read/write speeds. QNAP
recommends using block-based LUNs over file-based LUNs if possible.
Feature Block-based LUN File-based LUN VJBOD Cloud LUN
Parent storage space Storage pool Thick volume Cloud space
VAAI Full Copy Supported Supported Supported
VAAI Block Zeroing Supported Supported Supported
VAAI Hardware-Assisted
Locking
Supported Supported Supported
VAAI Thin Provisioning
and Space Reclaim
Supported Not supported Supported
Thin provisioning Supported Supported Not supported
QTS space reclamation Supported (when using
VAAI or the host is
Windows Server 2012,
Windows 8 or later)
Not supported Supported (when using
VAAI or the host is
Windows Server 2012,
Windows 8 or later)
Microsoft ODX Supported Not supported Supported
LUN export Supported Supported Supported
LUN snapshots Supported Partially supported (You
can take a snapshot
of the LUN's parent
volume.)
Supported
Read/write speeds High Medium to low High when using caching
(stored space)
Low when not using
caching
Creating a Block-Based LUN
1. Go to one of the following screens.
• iSCSI & Fibre Channel > iSCSI > iSCSI Storage
• iSCSI & Fibre Channel > Fibre Channel > FC Storage
2. Click Create, and then select New Block-Based LUN.
The Block-Based LUN Creation Wizard opens.
3. Select the storage pool that this LUN will be created in.
4. Select a LUN allocation method.
Allocation Description
Thick instant allocation QTS allocates storage pool space when creating the
LUN. This space is guaranteed to be available later.
QTS 4.4.x User Guide
iSCSI & Fibre Channel 371