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Synology DS620slim — Review & Specs | Pricepect | Pricepect

Home Cloud Storage DevicesSynology DS620slim

Synology DS620slim — image 1

Synology

Synology DS620slim

Expert Review Analysis

The Synology DS620slim is a compact 6‑bay 2.5" NAS offering up to 30 TB raw capacity, dual Gigabit Ethernet with link aggregation, and strong performance with up to 226 MB/s read speeds, all in a lightweight 1.4 kg chassis.

✓ Best for: Ideal for space‑limited home users, small offices, or apartments that need a quiet, compact NAS with up to 30 TB of fast SSD storage, media streaming with 4K transcoding, surveillance handling up to 20 4K cameras, and robust snapshot‑based backup.✗ Not ideal for: Not suited for users requiring massive storage beyond 30 TB, heavy virtualization, intensive 4K transcoding workloads, or high‑speed networking such as 10 GbE, nor for those who need expandability via external units or eSATA.

Pros

✓Compact, lightweight design (121x151x175 mm, 1.4 kg) ideal for space-constrained environments.
✓Whisper-quiet operation with idle noise level of 20.5 dB(A) makes it suitable for home or office use.
✓

Best Seller Rank History

Now#29Best#14Worst#188 +27

Lower = better sales rank

Specifications

Design

Height121 mm mm

Width151 mm mm

Depth175 mm mm

Weight1.4 kg g

System Fan Size80 x 80 x 20 mm

Features

System-wide SnapshotsUp to 65,000

Folder SnapshotsUp to 1,024 per shared folder

4K Video TranscodingDual-channel H.264/H.265

Surveillance SupportUp to 25 x 5MP @ 250 FPS or 20 x 4K @ 200 FPS

General

BrandSynology

ModelDS620slim

ColorWhite

Release Date2019-07-25

Warranty2 Years

Network

Ethernet Ports2 x 1GbE (link aggregation/failover)

USB Ports2 x USB 3.2 Gen 1

Performance

CPUIntel Celeron J3355 (2 cores, 64-bit)

CPU Base Clock2.0 GHz GHz

CPU Turbo Clock2.5 GHz GHz

Memory2 GB DDR3 non-ECC SODIMM GB

Maximum Memory6 GB DDR3 non-ECC SODIMM GB

Power

Power Supply65 W external adapter (100-240 V AC, 50/60 Hz) W

Power Consumption (Access)34.88 W W

Power Consumption (HDD Hibernation)7.59 W W

Power RecoveryYes

Scheduled On/OffYes

Storage

Drive Bays6 x 2.5" SATA HDD/SSD (hot-swappable)

Maximum Internal Raw Capacity30 TB TB

Maximum Single Volume Size108 TB TB

Maximum Internal Volumes64

Supported RAIDSynology Hybrid RAID, Basic, JBOD, RAID 0, 1, 5, 6, 10

Security

Hardware Encryption EngineAES‑NI support for on‑board encryption

File System

Btrfs Snapshot CapacityUp to 65,000 system‑wide snapshots and 1,024 per shared folder

Research Sources

global.download.synology.com

storagereview.com

global.download.synology.com

bhphotovideo.com

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User Reviews

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4.4

(123 reviews)

$549.99

DS620slimwhite6-bay; 2GB DDR3L 2 Years

Cloud Storage Devices

Strong sequential performance up to ~226 MB/s read and ~198 MB/s write, rivaling larger NAS models.

✓Flexible storage with six 2.5" hot‑swappable bays supporting up to 30 TB raw capacity and optional SSD caching.

✓Robust data protection via Btrfs file system offering up to 65,000 system‑wide snapshots and hardware AES‑NI encryption.

✓Dual Gigabit Ethernet ports with link aggregation and failover improve network reliability and throughput.

✓Energy‑efficient operation consuming only 7.59 W in HDD hibernation and featuring power recovery scheduling.

Cons

✗Maximum RAM is limited to 6 GB, which can bottleneck virtualization or heavy multitasking workloads.
✗The Intel Celeron J3355 CPU is modest and may struggle with intensive 4K transcoding under load.
✗No expansion unit or eSATA ports are provided, limiting future scalability beyond the internal bays.
✗Only two 1 GbE ports are available, lacking native 10 GbE or higher‑speed networking options.
✗Maximum internal raw capacity is capped at 30 TB, restricting large storage deployments without external solutions.

From Expert Reviews

Praised by Experts

✓Dong Knows Tech praised its powerful CPU, up to 6 GB RAM, six bays and performance that rivals full‑size NAS while remaining ultra‑compact and quiet.
✓StorageReview highlighted the solid 226 MB/s read and 198 MB/s write speeds, dual USB 3.0 and 1 GbE ports, and support for 108 TB single volume.
✓B&H Photo emphasized its energy efficiency, whisper‑quiet 20.5 dB(A) operation, flexible RAID options and SSD cache for modern workplace performance.
✓Professional reviewers noted the hardware encryption engine (AES‑NI) and Btrfs snapshot capabilities as strong data‑protection features.

Criticized by Experts

✗Reviewers pointed out the RAM ceiling of 6 GB, which falls short of the 8 GB some early claims suggested.
✗The lack of an expansion unit or eSATA ports was criticized for limiting scalability beyond the six internal bays.
✗The Celeron J3355 processor was described as dated and less capable for heavy workloads or demanding 4K transcoding.
✗Maximum raw capacity of 30 TB was seen as a limitation for users needing larger storage pools.

From User Reviews

Users Love

✓Everyday users love the small footprint that fits easily into apartments or cramped office spaces.
✓Customers frequently mention the whisper‑quiet operation at 20.5 dB(A), making it unobtrusive in living areas.
✓Users appreciate the ease of installing 2.5" SSDs for fast, silent storage without needing adapters.
✓The Synology DSM software is praised for its reliability, intuitive interface and robust media streaming capabilities.
✓Surveillance enthusiasts note solid performance handling up to 20 4K camera streams with smooth playback.

Users Complain About

✗Users report that the 6 GB RAM limit creates bottlenecks when running multiple virtual machines or heavy multitasking.
✗Many customers find the modest Celeron CPU insufficient for sustained 4K transcoding under heavy load.
✗The absence of a PCIe slot for 10 GbE upgrades is a common complaint among power users seeking faster networking.
✗Some users are disappointed by the inability to expand storage beyond the internal six bays, lacking external expansion options.

Expert Opinion

Professional reviewers commend the DS620slim for delivering full‑size NAS performance in an ultra‑compact chassis, highlighting its strong sequential speeds, dual Ethernet with aggregation, and robust data‑protection features like Btrfs snapshots and hardware encryption. However, they note limitations such as the modest 6 GB RAM ceiling, lack of expansion options, and a dated Celeron processor that may hinder heavy workloads.

What Users Say

Everyday users appreciate the tiny footprint, whisper‑quiet operation, and ease of using 2.5" SSDs, praising the reliable DSM software and solid media streaming and surveillance capabilities. Recurring frustrations focus on the limited RAM, modest CPU for demanding transcoding, and the inability to add external storage or upgrade to faster networking.

Common Complaints

Common issues include the 6 GB RAM ceiling causing performance bottlenecks, the modest Celeron CPU limiting heavy transcoding, lack of expansion ports or PCIe for future upgrades, and the 30 TB raw capacity ceiling restricting large‑scale storage deployments.

How It Compares

vs. Synology DS620

Advantages

✓Offers larger mixed‑bay configuration (3.5" and 2.5") for higher raw capacity.
✓Includes an expansion unit slot (DX517) for future scalability.
✓Provides a single 1 GbE port but can be expanded with optional network cards.

Disadvantages

✗Physically larger and heavier (~5 kg), making it less suitable for tight spaces.
✗Lacks the ultra‑compact 2.5"‑only design and the same low noise level of the DS620slim.
✗Higher power consumption due to larger drives and chassis.

Choose the DS620slim for ultra‑compact, quiet SSD‑centric deployments; choose the DS620 when you need higher capacity, mixed drive sizes, and expansion flexibility.

Rating Trend

Rating4.4/ 5Reviews125+54 reviews -0.10

Cooling

System Fan1 × 80 × 80 × 20 mm hot‑swappable with Full‑Speed, Cool, Quiet modes

Dimensions & Weight

Height4.76 inches

Width5.94 Inches

Depth6.89 inches

Weight3.086471668 pounds