User Guide

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Object Description Details

Disk Physical device that stores

and retrieves data

QNAP NAS devices support the following disk sizes and

types:

Size.

• 3.5-inch, 2.5-inch

• Specific models: M.2

Type:

• SATA, SSD

• Specific models: SAS, NL-SAS, NVMe PCIe SSD, NVMe

M.2 PCIe SSD

Note

All of the above disk types can be used to

create storage pools and static volumes. Only

SSDs, NVMe PCIe SSDs, and NVMe M.2

SSDs can be used in the SSD cache.

RAID group Logical disk that consists of

one or more disks. RAID

groups usually contain disks

that are of the same type and

capacity.

Data is distributed across the disks in a RAID group. Each

RAID type offers a different combination of reliability,

performance, and capacity. For details, see RAID.

Storage

pool

Pool of storage space that

consists of RAID groups

Storage pools can aggregate RAID groups that consist of

disks of different types and capacities. Storage pools enable

easier storage space management and features such as

snapshots.

Volume Portion of storage space that

is used to divide and manage

storage capacity

You can create volumes by dividing storage pool space, or

using the space of a RAID group. QTS offers three different

volume types, with different combinations of performance and

flexibility. At least one volume must be created before the

NAS can start storing data.

iSCSI LUN

(logical unit

number)

Portion of storage space that

can be used by other NAS

devices through the iSCSI

protocol

QTS offers two LUN types.

• Block-based LUN: Created from a storage pool. It is

similar to a volume, except that it has no file system and

must be linked to an iSCSI host.

• File-based LUN: Created on a volume. It is similar to an

ISO image file.

Shared

folder

Folder that is used for storing

and sharing files

Shared folders are created on volumes. QTS automatically

creates default shared folders for multimedia, public

documents, and downloads. You can create more shared

folders and configure permissions for each.

Storage Creation

QTS 4.3.4 Getting Started Guide

Storage & Snapshots 22