Synology DiskStation DS1522+ 5-Bay NAS Server

Specifications

CPU

CPU Model: AMD Ryzen R1600

CPU Quantity: 1

CPU Architecture: 64-bit

CPU Frequency: 2-core 2.6 (base) / 3.1 (turbo) GHz

Hardware Encryption Engine (AES-NI): Yes

Memory

System Memory: 8 GB DDR4 ECC SODIMM

Memory Module Pre-installed 

8 GB (8 GB x 1)

Total Memory Slots: 2

Maximum Memory Capacity: 32 GB (16 GB x 2)

Notes 

- Synology reserves the right to replace memory modules with the same or higher frequency based on supplier's product life cycle status. Rest assured that the compatibility and stability have been strictly verified with the same benchmark to ensure identical performance.
- Please select Synology memory modules for optimum compatibility and reliability. Synology will not provide complete product warranty or technical support if non-Synology memory modules are used for memory expansion.
For more information about the recommended memory configurations, please check the Hardware Installation Guide of your Synology product.

Storage

Drive Bays: 5

Maximum Drive Bays with Expansion Unit: 15 (DX517 x 2)

M.2 Drive Slots: 2 (NVMe)

Compatible Drive Type* (See all supported drives) 

3.5" SATA HDD
2.5" SATA SSD
M.2 2280 NVMe SSD

Hot Swappable Drive: Yes

Notes 

"Compatible drive type" indicates drives that have been tested to be compatible with Synology products. This term does not indicate the maximum connection speed of each drive bay.

External Ports

RJ-45 1GbE LAN Port*: 4 (with Link Aggregation / Failover support)

USB 3.2 Gen 1 Port*: 2

eSATA Port: 2

Notes 

This device's 1GbE LAN ports have a maximum transmission unit (MTU) size of 1,500 bytes.
The USB 3.0 standard was renamed to USB 3.2 Gen 1 by the USB Implementers Forum (USB-IF) in 201

PCIe

PCIe Expansion: 1 x Gen3 x2 network upgrade slot

File System

Internal Drives 

Btrfs
EXT4

External Drives 

Btrfs
EXT4
EXT3
FAT
NTFS
HFS+
exFAT

Appearance

Size (Height x Width x Depth): 166 mm x 230 mm x 223 mm

Weight: 2.7 kg

Others

System Fan: 92 mm x 92 mm x 2 pcs

Fan Speed Mode 

Full-Speed Mode
Cool Mode
Quiet Mode

Brightness Adjustable Front LED Indicators: Yes

Power Recovery: Yes

Noise Level*: 22.90 dB(A)

Scheduled Power On / Off: Yes

Wake on LAN / WAN: Yes

Power Supply Unit / Adapter: 120 W

AC Input Power Voltage: 100V to 240V AC

Power Frequency: 50/60 Hz, Single Phase

Power Consumption* 

52.06 W (Access)
16.71 W (HDD Hibernation)

British Thermal Unit 

177.64 BTU/hr (Access)
57.02 BTU/hr (HDD Hibernation)

Notes 

For more information on how power consumption is measured, refer to this article.
Noise testing was conducted with the Synology system fully installed with Synology SATA HDDs and in an idle state. Two GRAS 40AE microphones are placed at a 1 m distance from the front and rear of the device. Background noise: 16.49-17.51 dB(A); Temperature: 24.25-25.75°C; Humidity: 58.2-61.8%

Temperature

Operating Temperature: 0°C to 40°C (32°F to 104°F)

Storage Temperature: -20°C to 60°C (-5°F to 140°F)

Relative Humidity: 5% to 95% RH

Certification

Certification

FCC
CE
BSMI
VCCI
RCM
UKCA
EAC
CCC
KC

Environment

Environment

RoHS Compliant

Packaging Content

Contains

Main Unit X 1
Accessory Pack X 1
AC Power Adapter X 1
AC Power Cord X 1
RJ-45 LAN Cable X 2
Quick Installation Guide X 1

Software

Storage Management

Maximum Single Volume Size*: 108 TB

Maximum Internal Volume Number: 64

SSD Read / Write Cache (White Paper): Yes

SSD TRIM: Yes

Supported RAID Type 

Synology Hybrid RAID
Basic
JBOD
RAID 0
RAID 1
RAID 5
RAID 6
RAID 10

RAID Migration 

Basic to RAID 1
Basic to RAID 5
RAID 1 to RAID 5
RAID 5 to RAID 6

Volume Expansion with Larger HDDs 

Synology Hybrid RAID
RAID 1
RAID 5
RAID 6
RAID 10

Volume Expansion by Adding a HDD 

Synology Hybrid RAID
JBOD
RAID 5
RAID 6

Global Hot Spare Supported RAID Type 

Synology Hybrid RAID
RAID 1
RAID 5
RAID 6
RAID 10

Notes 

Usable capacity for each volume will be lower than the maximum volume size and is dependent on the filesystem and the amount of system metadata stored.
Each internal volume (may consist of multiple drives) is expandable up to 108TB.

File Services

File Protocol 

SMB/AFP/NFS/FTP/WebDAV

Maximum Concurrent SMB/AFP/FTP Connections: 2,000

Maximum Concurrent SMB/AFP/FTP Connections (with RAM expansion): 2,000

Windows Access Control List (ACL) Integration: Yes

NFS Kerberos Authentication: Yes

Notes 

Regarding data concerning tests with RAM expansion, all memory slots are installed with the maximum capacity of supported RAM.
The testing standard was based on the maximum number of concurrent connections supported by this model. During the testing, 25% of the connections were used to transfer files concurrently. The transfer process guaranteed that the connections were not interrupted; the minimum transfer speed was not guaranteed.

Account & Shared Folder

Maximum Local User Accounts: 2,048

Maximum Local Groups: 256

Maximum Shared Folder: 512

Maximum Shared Folder Sync Tasks: 32

Hybrid Share

Hybrid Share Folder Number: 10

Notes 

For more supported details, please check this article.

High Availability

Synology High Availability: Yes

Log Center

Syslog Events per Second 

800

Virtualization

VMware vSphere with VAAI: Yes

Windows Server 2016: Yes

Windows Server 2019: Yes

Citrix Ready: Yes

OpenStack: Yes

General 

Networking Protocols 

SMB1 (CIFS), SMB2, SMB3, NFSv3, NFSv4, NFSv4.1, NFS Kerberized sessions, iSCSI, HTTP, HTTPs, FTP, SNMP, LDAP, CalDAV

Supported Browsers 

Google Chrome
Firefox
Microsoft Edge
Safari

Supported Language 

English, Deutsch, Français, Italiano, Español, Dansk, Norsk, Svenska, Nederlands, ???????, Polski, Magyar, Português do Brasil, Português Europeu, Türkçe, Ceský, ???????, ???, ???, ????, ????

Notes 

For an updated list of supported browser versions, check the DSM Technical Specifications.