Technical reference

Synology DS124 specifications

Diskless enclosure; 1 GB fixed RAM. Buy a SATA drive separately.

Complete specifications with requirements, upgrade limits and sources. For our buying judgment, reviews and prices, return to the buying guide.

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Search all 91 specifications, including conditions and limits.

Processor and memory

Read the supplied memory separately from the supported maximum.

Processor and memory specifications
CPU Model	Realtek RTD1619B[1]
CPU Quantity	1[1]
CPU Cores	4[1]
CPU Threads	4[1]
CPU Architecture	64-bit[1]
CPU Frequency	1.7 GHz[1]
Hardware Encryption Engine	Supported[1]
System Memory	1 GB DDR4 non-ECC[1] Fixed onboard memory; no user memory expansion.

Drives, capacity and compatibility

Capacity and drive choices depend on RAID, memory and model-specific compatibility.

Drives, capacity and compatibility specifications
Drive Bays	1 × 3.5" SATA HDD or 2.5" SATA SSD[1] Only one storage drive. A 2.5-inch drive needs the separately purchased Type C holder; it does not add a second drive.
Hot Swappable Drive	Not supported[1] Only one storage drive. A 2.5-inch drive needs the separately purchased Type C holder; it does not add a second drive.
Maximum Single Volume Size	108 TB[1] Software ceiling, not installed or achievable raw capacity. Drive count, RAID, filesystem and metadata determine usable space.
Maximum Internal Volume Number	1[1]
SSD TRIM	Supported[1]
Supported RAID Type	Basic[1]
Internal Drives	Btrfs ext4[1]
External Drives	Btrfs ext4 ext3 FAT32 NTFS HFS+ exFAT[1]
Upgrade limits	No M.2 slots, network upgrade slot or external bay expansion[1] Choose the built-in bay count, memory and network for the life of the enclosure.

Network and connections

A faster port needs a suitable computer and network to improve a transfer.

Network and connections specifications
RJ-45 1GbE LAN Port	1[1] MTU limit 1500. Port count is not a single-file transfer speed.
USB 3.2 Gen 1 Port	2[1]
File Protocol	SMB AFP NFS FTP WebDAV Rsync[1]
Maximum Number of SMB Connections (FSCT-Based)	5[1] FSCT 1.3 HomeFolder test for 600s, all bays populated with Synology SATA HDDs and all onboard network ports; Windows Server 2022 controller, eight Windows 10 clients, directory leasing enabled. Not the number of accounts or an absolute connection block.
Windows Access Control List (ACL) Integration	Supported[1]
NFS Kerberos Authentication	Supported[1]

Backups, photos and other apps

Application guidelines retain their test, memory and licensing conditions.

Backups, photos and other apps specifications
Maximum Local User Accounts	256[1]
Maximum Local Groups	64[1]
Maximum Shared Folder	64[1]
Maximum Shared Folder Sync Tasks	2[1]
Folder and Package Backup	Supported[1]
Syslog Events per Second	400[1]
Supported Protocols	SMB1 (CIFS), SMB2, SMB3, NFSv3, NFSv4, NFSv4.1, NFS Kerberized sessions, iSCSI, HTTP, HTTPs, FTP, SNMP, LDAP, CalDAV[1]
Supported Browsers	Chrome Firefox Edge Safari[1]
Maximum Concurrent Download Tasks	80[1]
Maximum iSCSI Target Number	2[1]
Maximum LUN	4[1]
LUN Clone/Snapshot, Windows ODX	Supported[1]
DLNA Compliance	Supported[1]
Facial Recognition	Supported[1]
Maximum Snapshots per Shared Folder	128[1]
Maximum Snapshots per LUN	32[1]
Maximum Snapshots per System	1,024[1]
Maximum Replication Tasks for Shared Folders	16[1]
Maximum Replication Tasks for LUNs	8[1]
Maximum Replication Tasks per System	16[1]
Default Licenses	2 (Additional cameras require purchase of licenses)[1]
Maximum IP Cameras and Total FPS (H.264)	1080p: 12 channels, 300 FPS 3M: 12 channels, 200 FPS 5M: 12 channels, 140 FPS 4K: 9 channels, 90 FPS[1] Vendor continuous recording test with factory RAM and full drive population. RTSP streaming; all-camera SRTP reduces stated performance to 70%. Simultaneous viewing channels are twice the stated camera count for the same codec/resolution. Additional workloads affect results.
Maximum IP Cameras and Total FPS (H.265)	1080p: 12 channels, 360 FPS 3M: 12 channels, 240 FPS 5M: 12 channels, 200 FPS 4K: 12 channels, 140 FPS[1] Vendor continuous recording test with factory RAM and full drive population. RTSP streaming; all-camera SRTP reduces stated performance to 70%. Simultaneous viewing channels are twice the stated camera count for the same codec/resolution. Additional workloads affect results.
Maximum Number of Users	5[1] Guideline for Drive-indexed/hosted files: 20% users active, 80% idle; single SSD volume, Btrfs and unencrypted shares. Exceeding the guideline can slow responses but does not block operation.
Maximum Number of Hosted Files	100,000[1] Guideline for Drive-indexed/hosted files: 20% users active, 80% idle; single SSD volume, Btrfs and unencrypted shares. Exceeding the guideline can slow responses but does not block operation.
Maximum Number of Users	5[1] Guideline: 20% users act every 30s, 80% view a file; single SSD volume and Intel i3-3220/8 GB client. Client performance also affects editing capacity.
Maximum Connections	2[1]

Size, noise and power

Laboratory ratings depend on installed drives and workload.

Size, noise and power specifications
Size (Height × Width × Depth)	166 mm × 71 mm × 224 mm[1]
Weight	0.7 kg[1]
System Fan	60 mm × 60 mm × 1 pcs[1]
Fan Speed Mode	Full-Speed Mode Cool Mode Quiet Mode Low-power Mode[1]
Brightness Adjustable Front LED Indicators	Supported[1]
Power Recovery	Supported[1]
Noise Level	19.0 dB(A)[1] Manufacturer idle test, fully populated with Synology SATA HDDs. Two GRAS 40AE microphones at 1m front/rear; background 16.49–17.51dB(A), temperature 24.25–25.75°C, RH 58.2–61.8%. Your drives and room change audible noise.
Scheduled Power On / Off	Supported[1]
Wake on LAN / WAN	Supported[1]
Power Supply Unit / Adapter	36 watts[1] Adapter rating, not everyday energy use.
AC Input Power Voltage	100V to 240V AC[1]
Power Frequency	50/60 Hz, Single Phase[1]
Power Consumption	10.69 watts (Access) 3.44 watts (HDD Hibernation)[1] Manufacturer access/drive-hibernation measurements; hibernation is not normal idle. Drive choice and workload affect consumption.
British Thermal Unit	36.50 BTU/hr (Access) 11.75 BTU/hr (HDD Hibernation)[1] Manufacturer access/drive-hibernation measurements; hibernation is not normal idle. Drive choice and workload affect consumption.