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Six-bay NAS tower, matte black finish, front drive bays visible

Synology Inc.

Synology DiskStation DS1621xs+ NAS Xeon D-1527 2.2GHz 32GB 12TB SSD 10GbE

SKU CH-6X8K-2JWMD

A six-bay desktop NAS with a Xeon D-1527 2.2 GHz processor, 32 GB DDR4 ECC memory, twelve terabytes of SATA SSD storage and a 10 GbE port for virtualisation, surveillance and high-speed file sharing

  • Form Factor6-Bay
  • ProcessorIntel Xeon
  • Installed Memory32GB
  • Included HDD Capacity12TB (6 x 2TB)

Included HDD Capacity 12TB (6 x 2TB)

  • Xeon D-1527 4-core CPU at 2.2GHz turbo to 2.7GHz powers intensive multi-user workloads
  • 32GB DDR4 ECC SODIMM memory ensures data integrity for virtualisation and container storage
  • 12TB across six 2.5-inch SATA SSDs delivers ultra-fast file sharing and video editing throughput
  • Single 10GbE RJ-45 port with link aggregation and failover enables lightning-fast network connectivity
  • Btrfs file system with advanced LUN iSCSI service supports VM storage, backup and surveillance roles

Six-bay NAS for multi-user workloads

The Synology DiskStation DS1621xs+ is a 6-bay desktop NAS built around an Intel Xeon D-1527 4-core processor running at 2.2 GHz with a 2.7 GHz turbo. It ships with 32 GB of DDR4 ECC SODIMM memory and twelve terabytes of raw capacity provided by six 2.5-inch SATA SSDs. The unit runs Synology DSM and targets small to medium businesses needing iSCSI targets, file storage, email servers, domain controllers, VM and container storage, or a network video recorder for surveillance.

Single power supply with 10GbE and link aggregation

The chassis uses a single power supply and provides two 1 GbE RJ-45 ports plus one 10 GbE RJ-45 port with link aggregation and failover support. Three USB 3.2 ports and two eSATA ports handle external expansion. The Btrfs file system enables advanced LUN iSCSI service. No fan diameter, noise rating or power-draw figure is supplied in the data.

Drives and memory require installation

The six SATA SSDs and the memory modules are included separately in a sealed box and must be installed before use. DSM bundles storage management, file syncing, surveillance and backup software for immediate configuration. The platform also includes a 1 TB M.2 NVMe SSD for caching. Buyers who want drives pre-installed or a redundant power supply will need a different solution.

Highlights

  • Xeon D-1527 4-core CPU at 2.2GHz turbo to 2.7GHz powers intensive multi-user workloads
  • 32GB DDR4 ECC SODIMM memory ensures data integrity for virtualisation and container storage
  • 12TB across six 2.5-inch SATA SSDs delivers ultra-fast file sharing and video editing throughput
  • Single 10GbE RJ-45 port with link aggregation and failover enables lightning-fast network connectivity
  • Btrfs file system with advanced LUN iSCSI service supports VM storage, backup and surveillance roles

Specifications

Form Factor6-Bay
ProcessorIntel Xeon
Installed Memory32GB
Included HDD Capacity12TB (6 x 2TB)

Other versions of this model

1 more in the same range

Same family, different memory, cooler or clock — compare before you commit.

Questions about this item

How do I install the six 2.5-inch SATA SSDs and the 32 GB DDR4 ECC SODIMM modules, and what step is often missed?

Slide each SSD into a bay until it clicks, then seat the SODIMM firmly until the latches lock; the step often missed is enabling the Btrfs volume in DSM before writing data.

What maintenance or replacement will the Xeon D-1527 system need over time?

The single power supply is the only field-replaceable part; SSDs and memory are non-mechanical, so plan for a spare PSU and run SMART checks quarterly.

Which limit appears first during sustained 10 GbE transfers or heavy VM workloads?

The single 10 GbE port caps throughput at 10 Gbps, so network bandwidth saturates before the Xeon D-1527 CPU or the 32 GB DDR4 ECC memory.

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