Synology FlashStation FS3410 review

The FS3410 is a 2U, 24-bay FlashStation for business environments that want all-flash storage and DSM file, block and virtualization services. It is not a smaller sibling of every other 24-bay Synology model: its native positions are documented for 2.5-inch SATA SSDs, while its built-in network layout and older PCIe generation differ from the FS3420. The chassis is sold without the SSDs needed to create a storage pool.

All-flash capacity requires a separate drive plan

Synology specifies 24 hot-swappable SATA SSD bays and recommends checking the exact model compatibility list. Its manufacturer package list describes the main unit, accessories and power cords, not an installed SSD set. The FS3410 also lists Btrfs and RAID F1, Basic, JBOD, RAID 0, RAID 1, RAID 5, RAID 6 and RAID 10. RAID 1 can satisfy a two-drive mirror plan, but a mirror is not a second copy against deletion, ransomware, theft or loss of the whole rack. Size the usable storage after deciding on a RAID layout and reserve a separate backup target.

Synology reports a 1 PB single-volume option for RAID 6 with at least 64 GB of memory and a 200 TB option requiring 32 GB, alongside a 108 TB limit. The FS3410 ships with 16 GB, and its listed maximum is 128 GB; reaching a higher volume ceiling therefore involves a memory and configuration decision, not just filling bays. The data sheet’s performance claims are similarly conditional: over 129,000 4K random-write IOPS and over 356,500 read IOPS are manufacturer test results, not an independent benchmark or a forecast of file-transfer speed.

Network flexibility from the factory

There are two built-in 10GbE RJ-45 ports and four built-in 1GbE RJ-45 data ports. A separate 1GbE out-of-band management connection is shown in the hardware specifications and should not be mistaken for another file-service port. Optional network cards can add 10/25/40GbE interfaces through two PCIe 3.0 slots, but those are not built-in and must be selected from the current supported accessory list. A fast NIC cannot overcome a slower switch, client, cable, drive set or workload.

The 16 GB installed DDR4 ECC RDIMM memory can be expanded to a listed 128 GB with four slots. This differs from the FS3420’s 32 GB baseline, 192 GB listed ceiling and PCIe Gen4 slots. If the FS3410 is being considered because its four Gigabit ports are useful for segmentation or a particular network design, that real topology is a better reason to compare it than an old performance slogan.

Rack and room checks

At 88 × 482 × 724 mm and 15 kg, the FS3410 is a deep 2U chassis for a four-post 19-inch rack. The RKS-02 rail kit is a separate purchase. Synology lists dual redundant power supplies and hot-swappable fans, but those features still need an appropriate pair of power feeds, airflow, rack depth and maintenance process. The manufacturer’s 46.1 dB(A) idle-noise figure and 113.84-watt access figure are measurement results from its specified installed configuration; neither predicts every deployment’s sound or energy use. The current US support table lists the FS3410 as generally available with full DSM updates, full technical support and a five-year warranty.

Who it fits—and who should compare elsewhere

A small or midsize business may shortlist the FS3410 when 24 native SATA-SSD positions, 10GbE networking and a 2U rack format fit a defined service plan. Synology documents SMB/NFS file services as well as iSCSI and other business functions, so this is NAS-capable storage rather than a block-only device. It is less suitable for a desk-side home setup, a buyer who wants included disks, a design based on SAS HDDs, or a plan that assumes expansion shelves without a listed path for this model.

Compare the FS3420 if more installed and maximum memory or newer PCIe slots matter; compare the FS3600 if the documented 2.5-inch SAS HDD/SSD choices and listed external expansion options are important. In every case, verify the full SSD model, memory module recommendation, rack and rail kit, the end-to-end network, warranty terms from the seller and a separate backup/restore procedure. No single bay count or IOPS figure settles those checks.