Synology DiskStation DS725+ 2-Bay Desktop NAS Enclosure

DS725+

Condition: NEW

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Dhs. 2,185.00(exc. Vat)
Regular price
(exc. Vat)
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Dhs. 2,185.00(exc. Vat)
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Synology DiskStation DS725+ 2-Bay Desktop NAS Enclosure atomoffice
Synology DiskStation DS725+ 2-Bay Desktop NAS Enclosure atomoffice
Synology DiskStation DS725+ 2-Bay Desktop NAS Enclosure atomoffice
Synology DiskStation DS725+ 2-Bay Desktop NAS Enclosure atomoffice

Synology Network Attached Storage

Synology DiskStation DS725+ 2-Bay Desktop NAS Enclosure

A two-bay that is not an entry-level box. AMD Ryzen R1600 turboing to 3.1 GHz, 4 GB of ECC memory expandable to 32 GB, two M.2 NVMe cache slots, and a DX525 port that takes it to seven bays later. Quietest in the range at 17.9 dB(A). Supplied without drives — you choose and budget for those separately.

Drive bays
2 x SATA + 2 x M.2 NVMe, to 7 with a DX525
Processor
AMD Ryzen R1600, 2 cores / 4 threads
Memory
4 GB DDR4 ECC, up to 32 GB
Network
2.5GbE + Gigabit
Form factor
Desktop tower

Ryzen R1600 and ECC memory in a two-bay

Two cores and four threads turboing to 3.1 GHz, with ECC memory that corrects single-bit errors in flight and room for 32 GB. That combination normally starts at four bays — here it is in a box 106 mm wide.

Two bays now, seven later

Two M.2 NVMe cache slots sit alongside the SATA bays rather than consuming one, and a DX525 expansion unit takes the total to seven bays — so a two-bay purchase is not a dead end when the data grows.

17.9 dB(A) and about 20 W

One 92 mm fan with a quiet mode, measured by Synology at 17.9 dB(A) — the quietest figure in the current DiskStation range — drawing 20.41 W in use and 7.87 W with the drives asleep.

ProcessorAMD Ryzen R1600, 2 cores / 4 threads, 2.6 GHz base and 3.1 GHz turbo
CPU Architecture64-bit
System Memory4 GB DDR4 ECC SODIMM (one 4 GB module fitted)
Maximum Memory32 GB (2 x 16 GB)
Memory Slots2 — one occupied. Synology requires all modules to be identical and share the same model number
Encryption EngineYes — hardware encryption engine
Drives IncludedNo — supplied as a diskless enclosure. Drives are ordered separately.
Drive Bays2 x 3.5-inch SATA HDD or 2.5-inch SATA SSD
M.2 Slots2 x M.2 2280 NVMe SSD
Maximum Bays with Expansion7, using one DX525 expansion unit (sold separately)
Hot-SwappableYes on the two SATA bays. Synology states hot-swap is not supported on the M.2 slots
Drive CompatibilitySynology guarantees full functionality and support only for drives on its compatibility list
SSD CacheSupported with compatible SSDs, using the two M.2 slots rather than a drive bay
RAID LevelsWith the two internal bays: Basic, JBOD, RAID 0, RAID 1 and SHR. Adding a DX525 brings the drive count to seven, at which point RAID 5, 6, 10 and SHR-2 become available
Maximum Volume Size200 TiB maximum single volume (a DSM limit)
Network Ports1 x 2.5GbE RJ45 and 1 x Gigabit RJ45 — two ports, two different speeds
Link Aggregation / VLANThe two ports run at different speeds, so link aggregation cannot combine them into one faster link. Use the second port for separate traffic or failover
Jumbo FrameSupported on the 2.5GbE port. Synology limits the Gigabit port to a 1,500-byte MTU, so no jumbo frames there
Wake on LANWake on LAN and Wake on WAN supported
USB Ports1 x USB 3.2 Gen 1
Expansion Port1 x USB Type-C, for the DX525 expansion unit
Operating SystemDSM 7.2 (DiskStation Manager)
Client Operating SystemsWindows, macOS and Linux
File ProtocolsSMB, AFP, NFS, FTP, WebDAV and rsync
Internal File SystemBtrfs and ext4
SnapshotsBtrfs snapshots through Snapshot Replication, with replication to a second Synology
Form FactorDesktop tower
Dimensions (H x W x D)166 x 106 x 223 mm
Weight1.51 kg
Operating Temperature0 °C to 40 °C (32 °F to 104 °F)
Storage Temperature−20 °C to 60 °C (−5 °F to 140 °F)
Relative Humidity8% to 80% RH operating, 5% to 95% RH in storage
Power Supply65 W external adapter, 100–240 V AC
Power Consumption20.41 W in access, 7.87 W with drives hibernating
Cooling1 x 92 mm fan, with full-speed, cool and quiet modes
Noise Level17.9 dB(A), measured by Synology with hard drives fitted
Warranty3 years, extendable to 5 with EW201 (the extension sold in this region)

Specifications are provided by the manufacturer and may be updated or changed without prior notice. AtomOffice is not responsible for any discrepancies between the information shown here and the manufacturer's official documentation.

  • The DS725+ ships as a bare enclosure. Budget for two SATA drives on top, and check them against Synology's compatibility list before ordering — Synology only guarantees full functionality and support for drives on that list.
  • Two bays reach RAID 1 or SHR, which survives one failed drive. Two-drive redundancy needs more disks, which on this model means adding a DX525 expansion unit rather than a bigger chassis.
  • This model takes ECC memory. Both slots must hold identical modules sharing the same model number, so reaching 32 GB means a matched pair of 16 GB modules rather than adding one alongside the fitted 4 GB.
  • The two network ports are different speeds — one 2.5GbE and one Gigabit — so they will not combine into a single faster link, and Synology caps the Gigabit port at a 1,500-byte MTU. There is also only one USB 3.2 Gen 1 port on this model.
  • The warranty is 3 years and can be extended to 5, but the extension SKU is regional: in the UAE that is EW201. 'Extended Warranty Plus' is sold only in Europe and North America, so do not budget for it here.
  • ECC memory and a Ryzen processor in a two-bay footprint, which normally starts a tier higher.
  • NVMe caching without giving up either of the two drive bays.
  • 17.9 dB(A) means it can sit on a desk in an occupied room rather than needing a cupboard.
  • Btrfs snapshots roll a share back to a point in time, which is what actually saves you after ransomware.
A small office that wants server-grade memory
Backing up every PC and Mac in the business
A quiet NAS for a studio or consulting room
Virtual machines on a small footprint

DX525

Five-bay expansion unit over USB Type-C, taking the DS725+ from two bays to seven — and with it, access to RAID 5, RAID 6 and SHR-2.

D4ES03-8G / D4ES03-16G

Synology ECC DDR4 SODIMMs. Fit as an identical matched pair — Synology requires both modules to share the same model number — to reach 16 GB or the 32 GB ceiling.

SNV3400 / SNV5400 Series

Synology Enterprise M.2 2280 NVMe SSDs for the two cache slots, validated for this enclosure and leaving both SATA bays free for capacity.

HAT3300 / HAT5300 Series

Synology Plus and Enterprise 3.5-inch SATA drives, validated for this enclosure. The Enterprise series is the one to price for continuous multi-user workloads.

Don't see the accessory you need? Email info@atomoffice.com — we carry a range of Synology storage accessories and can help you find the right fit.

No. It is sold as a diskless enclosure, so you choose the drives to suit the capacity and budget you need. It takes two 3.5-inch SATA hard drives or 2.5-inch SATA SSDs, plus up to two M.2 NVMe SSDs for caching. Synology only guarantees full functionality and support for drives on its compatibility list, so check there first — we are happy to quote validated Synology drives alongside the unit.

Class of hardware. The DS725+ has an AMD Ryzen R1600 instead of a Celeron, ECC memory instead of non-ECC, two memory slots reaching 32 GB instead of a 6 GB ceiling, two M.2 NVMe cache slots the DS225+ does not have, and a DX525 expansion port. Both are two-bay boxes; only one of them is built to be grown.

Against one drive failing, yes — RAID 1 or SHR mirrors the two drives, so either can fail without data loss. Surviving a second failure needs more disks than two bays hold, which on this model means adding a DX525 expansion unit to reach seven drives, where RAID 6 and SHR-2 become available. Note that RAID is not a backup: it protects against hardware failure, not deletion or ransomware, which is what the Btrfs snapshots are for.

Not into one faster link. The DS725+ has one 2.5GbE port and one Gigabit port rather than a matched pair, so link aggregation cannot usefully bond them. The second port is still worth having for separating traffic, keeping a management path open, or failover. Synology also caps the Gigabit port at a 1,500-byte MTU, so jumbo frames apply only to the 2.5GbE port.

Not Sure How Many Bays or Which Drives?

Tell our UAE team what you are storing, how fast it needs to be and how much you can afford to lose, and we will size the NAS, the drives and the RAID level with you — including when a smaller unit is the right answer.