Updated 3 hours ago · Specifications verified September 1, 2026

Choose Between the DS1825neo+ and DS1825+

The same platform, with a factory-memory decision that changes value

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Quick answer

The regular DS1825+ is the safer ready-to-work business configuration because it includes 8GB ECC. The neo+ can be compelling when discounted and upgraded deliberately, but its 4GB non-ECC starter memory understates what many eight-bay buyers will ultimately need. CPU, bays, networking, M.2, expansion, DSM and warranty are otherwise the same.

As of September 12, 2026

Best price per TB

$26.11

Products tracked

Prices updated

3 hours ago

Major differences

Specification	DS1825neo+	DS1825+	Winner
CPU	AMD Ryzen V1500B, 4 cores / 8 threads, 2.2GHz	AMD Ryzen V1500B, 4 cores / 8 threads, 2.2GHz	Tie
Factory memory	4GB non-ECC	8GB DDR4 ECC	DS1825+
Maximum memory	32GB	32GB	Tie
Drive bays	8 (18 expanded)	8 (18 expanded)	Tie
Networking	2 × 2.5GbE; optional 10/25GbE	2 × 2.5GbE; optional 10/25GbE	Tie
M.2	2 × M.2 2280; cache	2 × M.2 2280; cache	Tie
Expansion	2 × DX525; 18 bays total; Gen3 x8 slot (x4 link)	2 × DX525; 18 bays total; Gen3 x8 slot (x4 link)	Tie
Warranty	3 years	3 years	Tie
Verified US sale	Not listed on verified date	Generally available	DS1825+

Winner by use case

Use case	Best choice	Why
Lowest initial cost	DS1825neo+	Only if the regional price saving is real and available.
Business data and VMs	DS1825+	ECC is fitted at the factory; larger models also start with more RAM.
Backups and photos	Cheaper model	CPU, DSM and storage features are identical.
Plex direct play	Tie	Both use the same AMD processor without an iGPU.
Long-term value	Compare total configuration	Add the memory upgrade you actually plan to the neo+ price.

Is paying extra worthwhile?

ECC does not replace backups or checksums, but it is a sensible layer for always-on business storage and memory-heavy services. Home backup users can reasonably accept non-ECC if the neo+ saving is substantial and the unit is officially sold in their region.

New SATA CMR drives for either DS1825 model

Price per

Sort

60 products

Product	Capacity	Price	$ / TB	Type	Prime	Buy
Western Digital Internal Hard Drives 18Tb DC HC550 Surveillance,Wd 3.5 HDD Sata 6Gb/s 7200 PRM NAS 512 mb Cache for Dvr Nvr	18 TB	$469.99	$26.11	Enterprise HDD · SATACMREnterprise	-	Buy on Amazon
HGST Ultrastar He12 \| HUH721212ALE601 \| 0F27454 \| 12TB 7200 RPM 256MB SATA 6.0Gb/s 3.5" Cache \| 512E \| BitLocker Hard Drive Encryption \| Power Disable Function \|	12 TB	$329.99	$27.50	Enterprise HDD · SATACMREnterprise	-	Buy on Amazon
Western Digital HUH721212ALE604 12TB Ultrastar DC HC520 SATA HDD - 7200 RPM Class, SATA 6 Gb/s, 256MB Cache, 3.5"	12 TB	$349.00	$29.08	Enterprise HDD · SATACMREnterprise	-	Buy on Amazon
WD Ultrastar DC HC580 WUH722424ALE6L4 - Hard Drive - 24 TB - Internal - 3.5" (8.9 cm) - SATA 6Gb/s - 7200 RPM - Buffer: 512 MB	24 TB	$749.99	$31.25	Enterprise HDD · SATACMREnterprise	-	Buy on Amazon
Seagate Skyhawk ST6000VX001 6TB 3.5" Internal Hard Drive - SATA	6 TB	$209.94	$34.99	NAS HDD · SATACMR	-	Buy on Amazon
Toshiba N300 PRO 24TB Large-Sized Business NAS (up to 24 Bays) 3.5-Inch Internal Hard Drive - Up to 550 TB/Year Workload Rate CMR SATA 6 Gb/s 7200 RPM 1.0 GB Cache - HDWG82EXZSTB	24 TB	$844.99	$35.21	NAS HDD · SATACMR	-	Buy on Amazon
Toshiba N300 8TB NAS 3.5-Inch Internal Hard Drive - CMR SATA 6 GB/s 7200 RPM 512 MB Cache - HDWG780XZSTA	8 TB	$282.51	$35.31	NAS HDD · SATACMR	-	Buy on Amazon
Seagate IronWolf Pro 24TB Enterprise NAS Internal HDD Hard Drive – CMR 3.5 Inch SATA 6Gb/s 7200 RPM 512MB Cache for RAID Network Attached Storage, Rescue Services (ST24000NT002)	24 TB	$848.86	$35.37	Enterprise HDD · SATACMREnterprise	-	Buy on Amazon
IronWolf ST12000VN0008 Hard Drive	12 TB	$429.99	$35.83	NAS HDD · SATACMR	-	Buy on Amazon
Seagate Skyhawk AI 24TB Video Internal Hard Drive HDD – 3.5 Inch SATA 6Gb/s 512MB Cache for DVR NVR Security Camera System with in-House Rescue Services (ST24000VE002)	24 TB	$859.99	$35.83	NAS HDD · SATACMR	-	Buy on Amazon
Seagate Skyhawk AI 20TB Video Internal Hard Drive HDD – 3.5 Inch SATA 6Gb/s 512MB Cache for DVR NVR Security Camera System with in-House Rescue Services (ST20000VE003)	20 TB	$719.99	$36.00	NAS HDD · SATACMR	-	Buy on Amazon
Seagate IronWolf Pro 14 TB NAS RAID Internal Hard Drive - 7,200 RPM SATA 6 Gb/s 3.5-inch (ST14000NE0008)	14 TB	$509.00	$36.36	NAS HDD · SATACMR	-	Buy on Amazon
Seagate IronWolf Pro 24TB Enterprise NAS Internal HDD Hard Drive – CMR 3.5 Inch SATA 6Gb/s 7200 RPM 512MB Cache for RAID Network Attached Storage, Rescue Services (ST24000NTZ02)	24 TB	$899.97	$37.50	Enterprise HDD · SATACMREnterprise	-	Buy on Amazon
WD Ultrastar DC HC570 0F48155 22 TB Hard Drive - 3.5" Internal - SATA (SATA/600) - Conventional Magnetic Recording (CMR) Method	22 TB	$829.99	$37.73	Enterprise HDD · SATACMREnterprise	-	Buy on Amazon
Toshiba N300 20TB NAS 3.5-Inch Internal Hard Drive - CMR SATA 6 GB/s 7200 RPM 512 MB Cache - HDWG62AXZSTA	20 TB	$759.95	$38.00	NAS HDD · SATACMR	-	Buy on Amazon
Seagate IronWolf 12TB, Interne Harde Schijf, voor NAS RAID, NAS, 3.5", SATA 6 GB/s, 7200 RPM, 265 MB Cache, FFP, Data Rescue Service (ST12000VNZ008)	12 TB	$457.30	$38.11	NAS HDD · SATACMR	-	Buy on Amazon
Seagate Skyhawk AI 16TB Video Internal Hard Drive HDD – 3.5 Inch SATA 6Gb/s 256MB Cache for DVR NVR Security Camera System with Drive Health Management and in-House Rescue Services (ST16000VE000)	16 TB	$615.00	$38.44	NAS HDD · SATACMR	-	Buy on Amazon
Western Digital Ultrastar DC HC550 18 TB Hard Drive - 3.5 Internal - SATA	18 TB	$694.45	$38.58	Enterprise HDD · SATACMREnterprise	-	Buy on Amazon
Western Digital 10TB WD Red Plus NAS Internal Hard Drive HDD - 7200 RPM, SATA 6 GB/s, CMR, 512 MB Cache, 3.5" - WD100EFGX	10 TB	$389.99	$39.00	NAS HDD · SATACMR	Prime	Buy on Amazon
Seagate IronWolf Pro ST14000NE0008 14 TB Hard Drive - 3.5" Internal - SATA (SATA/600)	14 TB	$550.00	$39.29	NAS HDD · SATACMR	-	Buy on Amazon
Seagate IronWolf Pro ST16000NE000 16 TB Hard Drive - 3.5" Internal - SATA (SATA/600), Mechanical Hard Disk	16 TB	$634.75	$39.67	NAS HDD · SATACMR	-	Buy on Amazon
Seagate ST18000NM003D 18TB Exos X20 SATA Hard Drive, 3.5" HDD, SATA 6Gb/s, 7200rpm, 256MB Cache, 512E, 4.16ms, NCQ	18 TB	$715.00	$39.72	Enterprise HDD · SATACMREnterprise	-	Buy on Amazon
HGST WD Ultrastar DC HC510 10TB 7200 RPM SATA 6Gb/s 3.5" Helium Platform Enterprise Hard Disk Drive - HUH721010ALE604 (0F27606)	10 TB	$399.00	$39.90	Enterprise HDD · SATACMREnterprise	-	Buy on Amazon
Toshiba N300 PRO 12TB Large-Sized Business NAS (up to 24 bays) 3.5-Inch Internal Hard Drive - Up to 300 TB/year Workload Rate CMR SATA 6 GB/s 7200 RPM 512 MB Cache - HDWG51CXZSTB	12 TB	$478.99	$39.92	NAS HDD · SATACMR	-	Buy on Amazon
Seagate Technology ST20000NM002H 20TB Exos X24 HDD 3.5 SATA 7200 ISE Bare Hard Drive	20 TB	$799.99	$40.00	Enterprise HDD · SATACMREnterprise	-	Buy on Amazon
Seagate Exos X24 24TB Enterprise Internal Hard Drive HDD - 6GB/s SATA 7200RPM 2.5M MTBF (ST24000NM002H)	24 TB	$959.99	$40.00	Enterprise HDD · SATACMREnterprise	-	Buy on Amazon
Western Digital 18TB WD Red Pro NAS Internal Hard Drive HDD - 7200 RPM, SATA 6 Gb/s, CMR, 512 MB Cache, 3.5" - WD181KFGX	18 TB	$729.99	$40.56	NAS HDD · SATACMR	Prime	Buy on Amazon
Seagate IronWolf 14TB NAS Internal Hard Drive HDD – CMR 3.5 Inch SATA 256MB Cache for RAID Network Attached Storage – Frustration Free Packaging (ST14000VN0008)	14 TB	$569.75	$40.70	NAS HDD · SATACMR	-	Buy on Amazon
Western Digital 20TB WD Red Pro NAS Internal Hard Drive HDD - 7200 RPM, SATA 6 Gb/s, CMR, 512 MB Cache, 3.5" - WD202KFGX	20 TB	$814.99	$40.75	NAS HDD · SATACMR	Prime	Buy on Amazon
Western Digital 24TB WD Red Pro NAS Internal Hard Drive HDD - 7200 RPM, SATA 6 Gb/s, CMR, 512 MB Cache, 3.5" -WD241KFGX	24 TB	$979.99	$40.83	NAS HDD · SATACMR	Prime	Buy on Amazon
Western Digital WD Ultrastar HC570 WUH722222ALE6L4 22TB 7200RPM 3.5'' Desktop HDD 0F48155	22 TB	$899.99	$40.91	Enterprise HDD · SATACMREnterprise	-	Buy on Amazon
Western Digital 16TB WD Red Pro NAS Internal Hard Drive HDD - 7200 RPM, SATA 6 Gb/s, CMR, 512 MB Cache, 3.5" - WD161KFGX	16 TB	$654.99	$40.94	NAS HDD · SATACMR	Prime	Buy on Amazon
for Enterprise Hard Disk ST18000NM000J 18TB Exos X18 7200 RPM	18 TB	$739.68	$41.09	Enterprise HDD · SATACMREnterprise	-	Buy on Amazon
Toshiba N300 10TB NAS 3.5-Inch Internal Hard Drive - CMR SATA 6 Gb/s 7200 RPM 512 MB Cache - HDWG71AXZSTA	10 TB	$414.99	$41.50	NAS HDD · SATACMR	-	Buy on Amazon
Seagate Exos X14 ST12000NM0008 12 TB Hard Drive - 3.5" Internal - SATA (SATA/600)	12 TB	$499.97	$41.66	Enterprise HDD · SATACMREnterprise	-	Buy on Amazon
Seagate IronWolf ST4000VN006 4 TB Hard Drive - 3.5" Internal - SATA (SATA/600) - Conventional Magnetic Recording (CMR) Method	4 TB	$167.49	$41.87	NAS HDD · SATACMR	-	Buy on Amazon
Toshiba MG09ACA18TE 18 TB Hard Drive - 3.5 Internal - SATA [SATA/600]	18 TB	$754.00	$41.89	Enterprise HDD · SATACMREnterprise	-	Buy on Amazon
Seagate Exos X20 ST20000NM007D 20TB 7.2K RPM SATA 6Gb/s 3.5in Hard Drive	20 TB	$839.99	$42.00	Enterprise HDD · SATACMREnterprise	-	Buy on Amazon
Western Digital 3TB WD Red Plus NAS Internal Hard Drive HDD - 5400 RPM, SATA 6 Gb/s, CMR, 256 MB Cache, 3.5" -WD30EFPX	3 TB	$126.22	$42.07	NAS HDD · SATACMR	-	Buy on Amazon
Western Digital Ultrastar WUH722014CLE6L4 14 TB Hard Drive - 3.5" Internal - SATA - Energy-Assisted Magnetic Recording (EAMR) - Server Device Supported - 7200rpm - 512e Format - 512 MB Buffer	14 TB	$589.99	$42.14	Enterprise HDD · SATACMREnterprise	-	Buy on Amazon
Seagate 14TB HDD Exos X14 7200 RPM 512e/4Kn SATA 6Gb/s 256MB Cache 3.5-Inch Enterprise Hard Drive (ST14000NM0018)	14 TB	$592.41	$42.32	Enterprise HDD · SATACMREnterprise	-	Buy on Amazon
Western Digital WD Red Plus Internal Hard Drive 6 TB CMR 3.5 Inch SATA 5400 rpm 256 MB NAS (Amazon.co.jp Limited)	6 TB	$254.50	$42.42	NAS HDD · SATACMR	Prime	Buy on Amazon
Western Digital WUH721414ALE6L4 14TB Ultrastar DC HC530 SATA HDD - 7200 RPM Class, SATA 6 Gb/s, 512MB Cache, 3.5"	14 TB	$594.75	$42.48	Enterprise HDD · SATACMREnterprise	-	Buy on Amazon
Seagate Skyhawk AI 14TB Surveillance Internal Hard Drive HDD–3.5 Inch SATA 6Gb/s 256MB Cache with Drive Health Management + 3-Year Rescue Service (ST14000VE0008)	14 TB	$594.75	$42.48	NAS HDD · SATACMR	-	Buy on Amazon
Seagate IronWolf 4TB NAS Internal Hard Drive CMR 3.5 Inch SATA 6Gb/s 5400 RPM 64MB Cache for RAID Network Attached Storage Rescue Services (ST4000VNZ06/006)	4 TB	$169.99	$42.50	NAS HDD · SATACMR	-	Buy on Amazon
Western Digital 8TB WD Red Plus NAS Internal Hard Drive HDD - 5640 RPM, SATA 6 Gb/s, CMR, 128 MB Cache, 3.5" - WD80EFZZ	8 TB	$339.99	$42.50	NAS HDD · SATACMR	-	Buy on Amazon
Western Digital 8TB WD Red Plus NAS Internal Hard Drive HDD - 5640 RPM, SATA 6 Gb/s, CMR, 256 MB Cache, 3.5" - WD80EFPX	8 TB	$339.99	$42.50	NAS HDD · SATACMR	Prime	Buy on Amazon
Seagate IronWolf ST12000VN0007 12 TB 3.5 Internal Hard Drive - SATA - 7200rpm - 256 MB Buffer	12 TB	$515.00	$42.92	NAS HDD · SATACMR	-	Buy on Amazon
Seagate IronWolf 18TB NAS Internal Hard Drive HDD – CMR 3.5 Inch SATA 6Gb/s 7200 RPM 256MB Cache for RAID Network Attached Storage, Rescue Services – Frustration Free Packaging (ST18000VNZ00)	18 TB	$774.45	$43.03	NAS HDD · SATACMR	-	Buy on Amazon
Seagate IronWolf 16TB NAS Internal Hard Drive HDD – CMR 3.5 Inch SATA 6GB/S 7200 RPM 256MB Cache for Raid Network Attached Storage, with Rescue Service (ST16000VN001)	16 TB	$691.45	$43.22	NAS HDD · SATACMR	-	Buy on Amazon
Western Digital Ultrastar DC HC550 WUH721816ALE6L4 0F38462 16TB 7.2K RPM SATA 6Gb/s 512e 512MB 3.5" SE HDD	16 TB	$694.45	$43.40	Enterprise HDD · SATACMREnterprise	-	Buy on Amazon
Seagate IronWolf Pro 12TB NAS Internal Hard Drive HDD – 3.5 Inch SATA 6Gb/s 7200 RPM 256MB Cache for RAID Network Attached Storage Data Recovery Service – Frustration Free Packaging (ST12000NEZ008)	12 TB	$524.45	$43.70	NAS HDD · SATACMR	-	Buy on Amazon
Seagate IronWolf Pro ST12000NE0008 12 TB Hard Drive - 512E Format - SATA 600-3.5" Drive - Internal - 7200RPM - 256 MB Buffer - Hot Pluggable	12 TB	$524.45	$43.70	NAS HDD · SATACMR	-	Buy on Amazon
Seagate Exos 12TB Internal Hard Drive Enterprise HDD – 3.5 Inch 6Gb/s 128MB Cache for Enterprise, Data Center – Frustration Free Packaging (ST12000NM0007)	12 TB	$525.00	$43.75	Enterprise HDD · SATACMREnterprise	-	Buy on Amazon
Seagate IronWolf Pro 14TB NAS Internal Hard Drive HDD – CMR 3.5 Inch SATA 6Gb/s 256MB Cache for RAID Network Attached Storage, Data Recovery Service – Frustration Free Packaging (ST14000NEZ008)	14 TB	$614.45	$43.89	NAS HDD · SATACMR	-	Buy on Amazon
Seagate IronWolf 10TB NAS Internal Hard Drive HDD – CMR 3.5 Inch SATA 6Gb/s 7200 RPM 256MB Cache for RAID Network Attached Storage, with Rescue Service (ST10000VN0008)	10 TB	$439.99	$44.00	NAS HDD · SATACMR	-	Buy on Amazon
Western Digital 22TB WD Red Pro NAS Internal Hard Drive HDD - 7200 RPM, SATA 6 Gb/s, CMR, 512 MB Cache, 3.5" - WD221KFGX	22 TB	$969.99	$44.09	NAS HDD · SATACMR	Prime	Buy on Amazon
16TB NAS Internal Hard Drive HDD – CMR 3.5 Inch SATA 6GB/S 7200 RPM 256MB Cache for Raid Network Attached Storage, Data Recovery Rescue Service (ST16000NE000)	16 TB	$705.84	$44.12	NAS HDD · SATACMR	-	Buy on Amazon
Western Digital 8TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 256 MB Cache, 3.5" - WD85PURZ	8 TB	$354.99	$44.37	NAS HDD · SATACMR	Prime	Buy on Amazon
Western Digital WD Red Plus Internal Hard Drive 8TB CMR 3.5 inch SATA 5640 RPM 256MB NAS WD80EFPX-AJP Eco Package	8 TB	$355.26	$44.41	NAS HDD · SATACMR	Prime	Buy on Amazon

Frequently asked questions

Is the DS1825neo+ slower than the DS1825+?

No verified CPU, storage or networking difference exists. Performance should be platform-equivalent at the same memory capacity and configuration.

Can a neo+ be upgraded to ECC?

Supported ECC upgrade modules are listed, but ECC and non-ECC modules must not be mixed. Follow the matched-module requirements in Synology's manual.

Which model is the better new purchase?

Choose the DS1825+ when factory ECC or immediate regional availability matters. Choose the DS1825neo+ only when its price saving remains compelling after any planned memory upgrade.

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Last updated: 2026-09-12 06:02:12 UTC. As an Amazon Associate we earn from qualifying purchases. Product prices and availability are accurate as of the date indicated on Amazon.com and are subject to change. Any price displayed at the time of purchase will apply. CERTAIN CONTENT THAT APPEARS ON THIS SITE COMES FROM AMAZON SERVICES LLC. THIS CONTENT IS PROVIDED AS IS AND IS SUBJECT TO CHANGE OR REMOVAL AT ANY TIME.