Synology RS1619xs13 RackStation iSCSI NAS Server

Name: Synology RS1619xs13 RackStation iSCSI NAS Server
Brand: Synology
SKU: RS1619xs13

Overview

The Synology RS1619xs+ is a 1U rackmount NAS built around the Intel Xeon D-1527, a quad-core 2.2GHz processor from Intel's embedded server line. Unlike consumer NAS chips, the D-1527 supports ECC DDR4 memory — in this configuration up to 64GB — meaning single-bit RAM errors are silently corrected rather than propagated into stored data or running VMs. The platform presents four 3.5" SATA bays plus two M.2 slots (for SSD cache or additional storage), four 1GbE RJ-45 ports with LACP aggregation and failover, redundant hot-swap power supplies, and a single PCIe expansion port. Running Synology DSM, it can operate simultaneously as an iSCSI target, SMB/NFS file server, Active Backup destination, Docker host, and domain controller — workloads that would saturate a consumer NAS in minutes.

The RS1619xs+ is designed for SMB IT environments, MSP-managed infrastructure, and production VMware or Hyper-V clusters where the NAS doubles as primary or secondary datastore. The Btrfs file system enables instant LUN snapshots and space-efficient clones — a capability that matters when you're protecting 20+ VMs and need recovery point objectives measured in minutes rather than hours. The M.2 cache slots allow tiering of NVMe SSDs to absorb random write bursts before committing to spinning HDDs, which is particularly effective for SQL Server backup landing zones and VDI profiles. This unit fits best where you need Xeon-class compute reliability in a compact 1U footprint without stepping up to full-rack enterprise SAN pricing.

Key Features

Synology RackStation RS1619xs+, made for a variety of server roles such as iSCSI targets backup, virtualization, file storage, email servers, and domain controllers!

Intel Xeon D-1527 Quad-Core 2.2GHz 6MB CPU; 16GB DDR4 PC4-17000 2133MHz Memory; 1TB (2 x 500GB) SATA III M.2 Solid State Drives for Ultra Fast Storage; 8TB (4 x 2TB) 7.2K 6Gb/s SATA 3.5" HDDs for High Capacity Storage; 4 x RJ-45 1GbE LAN Port (with Link Aggregation / Failover support); 2 x USB 3.0 Port; 1 x Expansion Port, Btrf File System for Advanced LUN iSCSI Service

Operating System: Synology DSM Software

Synology NAS chassis comes in a sealed box.

Hard drives and memory upgrades included separately NOT installed, installation required.

Specifications

Form Factor

1U Rack Mountable

Processor

Intel Xeon D-1527 Quad-Core 2.2GHz, 6MB Cache

Memory

Up to 64GB DDR4 PC4-17000 2133MHz (ECC)

Drive Bays

4 × 3.5" SATA

M.2 Slots

2 × SATA III M.2 (SSD cache or storage)

Network Ports

4 × RJ-45 1GbE (Link Aggregation / Failover)

USB Ports

2 × USB 3.0

Expansion Port

1 × Expansion Port

File System

EXT4, Btrfs

Power Supply

Redundant

Operating System

Synology DSM

Included Accessories

Synology Sliding Rail Kit

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Pros & Cons

👍 Pros

Intel Xeon D-1527 with ECC DDR4 support provides memory error correction that commodity NAS platforms lack, critical for database and VM workloads.
Redundant power supply in a 1U form factor eliminates single-point-of-failure risk without requiring a second unit.
Btrfs file system enables native LUN snapshots, clone operations, and self-healing checksums across the iSCSI target layer.
4× 1GbE with LACP link aggregation delivers up to 4Gbps aggregate read throughput to multiple simultaneous clients.
M.2 SSD slots allow dedicated SSD cache tiers without consuming 3.5" bay capacity, preserving full HDD storage density.

👎 Cons

No onboard 10GbE — the 1GbE ports become a throughput bottleneck for high-IOPS VMware clusters pushing past ~4Gbps aggregate, requiring an add-in PCIe card.
4-bay capacity is modest for a 1U Xeon-class unit; competing platforms at similar price points offer 8–12 bays in the same rack height.
Drives ship uninstalled, adding initial setup time in a deployment scenario — not a plug-and-play appliance out of the box.
DSM licensing fees apply for some enterprise features (Active Directory server, Surveillance Station beyond base channels), adding to total cost of ownership.

Frequently Asked Questions

What CPU and memory does the RS1619xs+ ship with, and what does that mean for concurrent workloads?

The RS1619xs+ runs an Intel Xeon D-1527 quad-core at 2.2GHz with up to 64GB DDR4-2133. That Xeon D-series chip is purpose-built for NAS and edge server duty — it carries ECC memory support, meaning bit-flip errors in RAM are detected and corrected before they corrupt data. For environments running simultaneous iSCSI targets, virtual machine datastores, and active backup jobs, the ECC support alone justifies the platform.

Does this unit support 10GbE, or am I limited to the four 1GbE ports?

The base configuration ships with 4× RJ-45 1GbE ports with link aggregation (LACP) and failover support. There is no built-in 10GbE — to reach 10G throughput you would need to add a compatible PCIe NIC via the expansion slot. For most SMB iSCSI targets, bonded 1GbE delivers sufficient bandwidth, but high-density VMware or Hyper-V environments will feel that ceiling quickly.

How many drive bays does the RS1619xs+ have, and what's the raw capacity ceiling?

The RS1619xs+ is a 4-bay 1U unit. With current 20TB SATA 3.5" drives and additional M.2 NVMe cache SSDs, you can reach roughly 80TB raw in the main chassis. The single expansion port supports Synology DX517 or similar expansion units to add up to 5 more drives per unit, significantly extending total capacity.

Is the RS1619xs+ compatible with VMware vSphere or Microsoft Hyper-V as an iSCSI target?

Yes. The RS1619xs+ supports iSCSI LUN presentation via Synology DSM, which is certified compatible with VMware vSphere (including VAAI primitives) and Microsoft Hyper-V. Btrfs volumes enable LUN thin provisioning and snapshot acceleration. VAAI offload reduces CPU overhead on the ESXi host side during large block operations.

Does this ship with drives and memory installed?

No — per the listing, hard drives and memory upgrades are included in the box but not pre-installed. You will need to seat the drives and DIMMs before first boot. This is straightforward: Synology's tool-less tray system handles 3.5" HDDs, and the M.2 slots are accessible after removing the top panel.