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White rectangular desktop NAS enclosure with five front drive bays and matte finish

Synology Inc.

Synology Inc. DS1525+ 5-Bay NAS 8GB DDR4

SKU CH-TT54-R11C1 MPN DS1525+

Five-bay desktop NAS with 8 GB DDR4 ECC memory, dual 2.5GbE ports and M.2 NVMe slots, delivering up to 1,181/1,180 MB/s sequential throughput

  • Form factor5-Bay;8 GB DDR4
  • Power draw52.06 W (Access) 16.71 W (HDD Hibernation)
  • USB ports2 x USB 3.2 Gen 1
  • Port esata2 x eSATA
  • Drive interface5 x SATA (5 x Bay)
  • Installed RAM8 GB DDR4 ECC SODIMM

Model DS1525+

  • Up to 1,181/1,180 MB/s sequential throughput for fast data transfers
  • Two built-in 2.5GbE ports enable high-speed networking out of the box
  • 8 GB DDR4 ECC SODIMM installed with an extra slot for memory expansion
  • Five drive bays plus two M.2 2280 slots support mixed SATA and NVMe storage
  • Scales up to 15 drives with expansion units for growing capacity

5-bay desktop NAS with 8 GB DDR4 ECC

The Synology DS1525+ is a diskless desktop NAS with five drive bays and 8 GB of DDR4 ECC SODIMM installed. It provides two built-in 2.5GbE ports and supports sequential read and write throughput up to 1,181/1,180 MB/s. The unit includes two USB 3.2 Gen 1 ports and two eSATA ports for external expansion.

Suits small-business and home-lab users needing

This NAS suits administrators who want a compact, multi-bay platform with ECC memory and 2.5GbE networking out of the box. It also fits media enthusiasts planning to add M.2 NVMe caching later. Buyers who require 10GbE ports already integrated or who need more than five internal bays without expansion units should consider other models.

8 GB DDR4 ECC SODIMM installed in two slots

The system ships with 8 GB of DDR4 ECC SODIMM across two slots, allowing memory upgrades within the DDR4 platform. This ECC configuration helps protect data integrity during continuous operation. Users needing larger memory capacities for virtualization or heavy databases must purchase compatible DDR4 ECC modules separately.

How it compares

Measured against everything we stock in Multi-Bay Desktop NAS, at today’s prices. Recalculated every night.

Price $922.99
Pricier than about 65% of the 230 comparable items (median $562.49).

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Specifications

Product
Brand nameSynology
Product lineDiskStation
Model nameDS1525+
Product typeDesktop NAS
Recommended useBackup & stream media through personal cloud
Memory
Installed RAM8 GB DDR4 ECC SODIMM
RAM slots2 x DDR4 SODIMM
Storage
Drive interface5 x SATA (5 x Bay)
Drives includedDiskless System
Supported RAID modesSynology Hybrid RAID, Basic, JBOD, RAID 0, RAID 1, RAID 5, RAID6, RAID 10
Connectivity
Protocol supportSMB1 (CIFS), SMB2, SMB3, NFSv3, NFSv4, NFSv4.1, NFS
Kerberized sessions, iSCSI, HTTP, HTTPs, FTP, SNMP, LDAP,
CalDAV
Ports & slots
USB ports2 x USB 3.2 Gen 1
Port esata2 x eSATA
Power
Power draw52.06 W (Access)
16.71 W (HDD Hibernation)
Power details100-240 VAC 50/60 Hz
Size & build
Form factor5-Bay;8 GB DDR4
Product dimensions11.61 in × 10.43 in × 10.43 in
Product weight9.39 lb (4.26 kg)
Shipping weight4.67 kg
Package size305 × 292 × 286 mm
Compatibility
Compatible drives5 × 3.5 in or 2.5 in SATA HDD/SSD (drives not included)
2 x M.2 2280 NVMe SSD (drives not included)
In the box
In the boxMain Unit X 1
Accessory Pack X 1
AC Power Adapter X 1
AC Power Cord X 1
RJ-45 LAN Cable X 2
Environment & compliance
Temperature rangeOperating Temperature : 0 °C to 40 °C (32 °F to 104 °F)
Storage Temperature : -20 °C to 60 °C (-5 °F to 140 °F)
Humidity range5% to 95% RH

Other versions of this model

5 more in the same range

Questions about this item

How much power does the DS1525+ draw when its drives are active versus hibernating?

The unit consumes 52.06 W during access and drops to 16.71 W when the drives are hibernating.

Which drives must I supply to populate the five bays and the two M.2 slots?

You need five 3.5" or 2.5" SATA HDDs or SSDs for the main bays and up to two M.2 2280 NVMe SSDs for the cache slots; none are included.

Can I keep using my existing 1 GbE switch with the built-in 2.5GbE ports?

Yes, the two 2.5GbE ports auto-negotiate down to 1 GbE so your current switch works without changes.

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