Synology M2D20 Full Description
Product Overview
The Synology M2D20 is a dual-slot M.2 NVMe SSD adapter card designed to supercharge NAS I/O performance by dramatically reducing random I/O latency. It connects via a PCIe 3.0 x8 interface and is optimized for latency-sensitive applications such as photo indexing, file search, and virtualization deployments.
Key Features
- Dual M.2 2280/22110 NVMe SSD slots for flexible cache acceleration
- Multi-queue NVMe capability to boost random I/O performance
- Attachable full-height and low-profile brackets for broad chassis compatibility
- Ideal pairing with Synology SNV3000 series enterprise-grade NVMe SSDs
- Cache acceleration frees primary drive bays for bulk storage
- Warranty period starts from the purchase date as stated on your receipt
Technical Specifications
| Specification | Details |
|---|---|
| Interface | PCIe 3.0 x8 |
| M.2 Slots | 2 × M-Key (supports NVMe 2280/22110) |
| Supported SSD Type | NVMe |
| Bracket Options | Full-height and low-profile |
| Compatible NAS Models | RS4021xs+, RS3621xs+, RS3621RPxs, RS2821RP+, RS2421RP+, RS2421+, RS1221RP+, RS1221+ |
| RS3618xs, RS2818RP+, RS2418RP+, RS2418+, DS3018xs, DS1618+ | |
| DSM Requirement | 6.2.3-25426 or later (some models require DSM 7.0.1 or later) |
| Operating Temperature | 0 °C to 40 °C |
| Storage Temperature | –20 °C to 60 °C |
| Relative Humidity | 5 % to 95 % (non-condensing) |
| Dimensions (H × W × D) | 71.75 × 181.9 × 15.8 mm |
| Weight | 0.19 lb (3.04 oz) |
| Country of Origin | Taiwan |
Model specifications are subject to change without prior notice. Figures based on Synology internal testing; actual performance may vary.
Performance & Thermal Management
The M2D20 accelerates random I/O with dual NVMe lanes that leverage multi-queue commands, significantly improving response times for database queries, virtualization, and metadata-intensive tasks. Although it lacks a built-in heatsink, its low-profile design maintains thermal headroom in well-ventilated NAS chassis. Pairing with Synology’s SNV3000 SSDs provides enterprise-grade endurance and consistent write performance under sustained workloads.
Compatibility
- Supported on Synology RackStation and DiskStation models across the 21, 18, and 17 series
- Requires DSM 6.2.3-25426 or later for most models; select models need DSM 7.0.1 or newer
- Automatic SSD detection, cache pool configuration, and health monitoring managed through DSM
Use Cases
- Accelerating file search and media indexing in large-scale photo or video libraries
- Improving virtual machine responsiveness in virtualization-optimized NAS setups
- Reducing backup and snapshot latency in SMB and enterprise environments
- Enhancing database and analytics performance on networked storage systems
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