QNAP

QTS 5.0.x

QTS LUN Types

QTS supports the following types of LUNs.

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