New Synology NAS for First Half of 2025 Revealed – DS925+, DS1825XS+, DS625Slim, DS1525+ and More

After what seems like quite a while for many, we have finally got pretty large confirmation that Synology are refreshing a large number of their Desktop (and a couple of Rackmount systems) devices – as well as launching a few new storage media options. This new information arrives via ChipHell user ‘nineeast‘ in a recent forum post. I am still in the process of identifying the event that the photo below was taken from, but given the preponderance of people taking photos, it won’t be long before this spreads further. This is of course the potential that this is a hoax… but (as you will see later in the article) the chiphell post is not the only source. Nevertheless, it looks like Synology are getting set to refresh a huge number of solutions, launching their DS925+, DS425+, DS225+, DS1525+, DS1825+, DS725+, DS625slim, DS1825xs+ and RS2825RP+ between now and Summer 2025. So, let’s discuss what these refreshed devices bring and whether they deserve your data.

Credit to nineeast on Chiphell forum

Which Synology Solutions were Revealed at the Synology Event?

The big deal here is that it is tremendously rare for Synology to reveal their roadmap of solutions, let alow share it with users in such a detailed fashion. Synology have always been tremendously restrained when it comes to revealing their product refreshes (and new product lines). That said, refreshes of products in their portfolio periodically is pretty normal, and most Synology solutions will see a refresh every 2.5-5years (depending on the product tier, with XS series devices generally having a longer refresh cycle), and many have been wondering about when a refresh to the x22/23 range of devices would arrive, and in what form it would take. The TLDR list of solutions shown were:

DESKTOP SOLUTIONS	RACKMOUNT SOLUTIONS	EXPANSIONS	MEDIA
DS1825+ – AMD V1500B, 2.5GbE ×2 DS1525+ – AMD V1500B, 2.5GbE ×2 DS925+ – AMD V1500B, 2.5GbE ×2 DS725+ – AMD R1600, 2.5GbE ×1 DS625slim – Intel J4125, 2.5GbE ×1 DS425+ – Intel J4125, 2.5GbE ×1 DS225+ – Intel J4125, 2.5GbE ×1 DS1825xs+ – AMD V1500B, 2.5GbE, 10GbE + OOB	RS2825RP+ – AMD V1780B, 10GbE	RX1225RP – Suitable for certain RS series devices DX525 – Suitable for certain DS series devices	SNV5420 Series – M.2 2280 NVMe SAT5221 Series – 2.5” SATA SSD HAT5310-12T/16T – 3.5” SATA HDD HAT5310-4T/8T – 3.5” SATA HDD HAT3320-8T – 3.5” SATA HDD

The biggest takeaway in these shared images seems to be that the bulk of the solutions in this 2025 year refresh are going to remain largely the same, but with two main changes across the board.

Credit to nineeast on Chiphell forum

Thise changes are 1GbE network interfaces will be upgraded to 2.5GbE interfaces universally, and expansion devices that would have previously used eSATA as a means of connectivity will now be USB-C (as well as a reshuffle of the CPUs in the product tiers/families around), but we will get onto that latter point in a moment. Further information and images have also been shared by user ‘ERROR204‘ on imnks, another storage *& network related forum, as well as bringing further information on the expansion devices. The DS1525+, DS925+ and DS725+ will serve as refreshes of the DS923+, DS723+ and DS1522+ NAS. It’s unclear whether they will be using that mini PCIe upgrade card like the existing series (the E10G20-T1-MINI) as the slide below indicates that they will not, but the DS925+ and DS1525+ will see the R1600 Dual Core / 4 Thread Ryzen processor in their predecessor replaced with the v1500B 4 Core / 8 Thread CPU (previously used in the 6/8/12 Bay desktop NAS devices. The DS725+ however will remain as the R1600, but will see the 1GbE NICs upgraded to 2.5GbE.

Credit to ERROR204 on imnks.com

Interestingly, the default memory on the DS725+ will increase to 4GB of ECC Memory (as opposed to the 2GB in the DS723+ predecessor). However the slide below also indicates that it will no longer support the mini PCIe 10GbE adapter. So it’s a mixed bag in the DS725+ refresh really. This slide also indicates that the USB-C connected expansion will seemingly remain at 6Gb/s transfer speeds – which is a little odd, given USB 3.2 Gen 1 is 5Gb/s and USB 3.2 Gen 2 is 10Gb/s – something to ponder.

Credit to ERROR204 on imnks.com

Next is the ‘media’ series of devices and also a return of the Synology SLIM series. The DS625slim arrives (refreshing the DS620slim from 2020) and the DS425+ and DS225+ arrive as refreshes for the comparatively (for Synology’s MO) new DS224+ and DS423+ NAS. These will be continuing to use the existing Intel J4125 Quad Core Celeron CPU from 2019/2020 (something I know will not please everyone), but will also see upgrades to 2.5GbE from the 1GbE on their predecessors. Additioanlly, I think we can assume the DS425+ will have the 2x M.2 NVMe slots of it’s predecessor.

Credit to ERROR204 on imnks.com

Now the DS925+ (a refresh of the DS923+) has the upgrade from the R1600 CPU to the V1500B CPU we mentioned earlier, alongside the new USB-C expansion support (the DX525) and 2.5GbE NICs, so I think we can assume the DS1525+ will be similarly reprofiled from the DS1522+, but I am unsure if it will have 2x USB-C ports instead of 2x eSATA (almost certainly, but not 100%). I think many user are going to have mixed feelings once again about the CPU choices present here in the bulk of these new refreshes.

Credit to ERROR204 on imnks.com

Now onto those two 8 Bay devices, the DS1825+ and DS1825xs+ (serving as refreshes of the DS1821+ and DS1823xs+ respectively). As covered in my video in 2024 about previously leaked information on the DS1825+, it seems that both of these devices will have the same CPU as their predecessor devices, but will see upgrades from their 1GbE ports towards 2.5GbE (with the DS1825xs+ maintaining it’s 10GbE copper connection). All other specifications (M.2 slots, expandability, memory, etc) will all seemingly remain the same – though I think we can once again assume that expansion ports will be USB-C in line with the DX525 box.

For many, it will be a little disappointing that we did not see a 6-Bay model arrive and in fact there has not actually been a 6-Bay Synology NAS since 2020 (when the DS1621+ and DS1621xs+ were launched), increasing fears that Synology are eliminating that tier of their portfolio. However, there is ZERO confirmation on this and the 6 Bay option in the Synology store is still present for the DS1621+ and DS620slim, though the DS1621xs+ has disappeared (likely replaced internally with the 8 bay XS option).

 

Finally, there is the storage media that was listed. Some drives we already knew about. For example, the SAT5221 Series of SATA SSDs already appeared on vietcorp (HERE), but the HAT3320 is seemingly a refresh/new line in the Synology Plus series of hard drives – and there have been rumours circling for a while that these would be Seagate Ironwolf drives, but currently unconfirmed.

Finally, there is the Synology SNV5420 series – a new M.2 NVMe media drive range, but it is currently unclear if this is a complete refresh of the SNV3400/SNV3410, or as the naming convention seems to indicate, a higher performance/class of M.2 NVMe SSDs. This is something that has been LONG DEMANDED as Synology still have a solid insistence on their systems/add-on cards with M.2 NVMe Support HAVE TO be their own media drives if you want to use the slots of Storage pools, yet the SNV3400 range and it’s variations are comparatively low speed and high priced vs the rest of the M.2 NVMe SSD market as a whole.

So, that’s everything we know so far. Let’s now discuss what we think together in the comments!

The New Synology 2025 Product Line Up – What I Like and What I Don’t!

I have mixed feelings about the entire Synology refreshed line up – on the one hand I DO think there is a meaningful refresh here on the DS925+ and DS1525+ NAS. No one was expecting Synology to completely change this product family, as they have already made it pretty clear that these two system profiles are designed now more for the SMB user, small business, container deployer and those with file processing needs – i.e not multimedia as the focus. So, them upgrading this from the R1000 CPU in the x23 series to a V1000 CPU (doubling the cores and threads) will be tremendously welcome – as will 2.5GbE out the box (though I would like more clarification on the E10G22-T1-MINI 10GbE upgrade card support – as it looks like this is now not supported and that would be a real shame). Also, as much as its a bummer to see the V1500B CPU that Synology have already had on their products in 2020 in these 4 and 5 Bay solutions, they ARE good follow up CPUs over the R1600 in profile, and still have a length support time with AMD backing them up. All that said, the DS725+ seems pretty hard done by here, in fact the DS425+, DS225+ and DS725+ all seem to essentially be the same NAS, but with the 1GbE NICs swapped out with 2.5GbE. I mean, if the price remains exactly the same as the DS423+, DS224+ and DS723+ (and no other hardware surprises arrive in the form of no NVMe slots, etc), then these are…technically…refreshes. But more like a DS224+II, than a whole new DS225+.

Regarding the Intel Celeron devices, I am a little puzzled more than anything else. 2.5GbE on these is good (even if we overlook the fact that 2.5GbE has been fairly standard on ALL NAS systems in place of 1GbE since 2020 from everyone else), but the J4125 CPU is a CPU that has long since retired by Intel (indeed, Intel Celeron naming itself is long gone in favour of the Alder Lake and Twin Lake N processors). So unlike the strong support afforded to the AMD processors I mentioned above, the J4125 seems a remarkably dated choice right now. Still, better some kind of graphical capable CPU in the line up than none at all. Still, odd choice. As there are a lot of holes in these specifications, it’s tough to make a full list of what is good and bad, plus we have to acknowledge that things CAN change during development. So, I’ll hold off for now with anything concrete on my own thoughts, but again, I would love to chat in the comments here or on YouTube for your own thoughts.

Things we still need confirmation on!

As I just mentioned, there are still a lot of gaps in these specs and till we have the full picture, we can’t judge anything! So, here are the questions I still have about these new refreshes that remain unanswered for now:

• HDD and SSD Compatibility, will it be largely the same as the existing 22/23/24 series devices (i.e largely Synology drives, but a few Seagate/WD/Toshiba drives), or will these new series be the first to arrive with strict Synology-only drive media and/or pre-population?
• How is the USB-C 6Gb/s? Is it an adapter, or a USB-C Port on the old lane internally?
• Where is the 6-Bay?
• Ambiguity at best, complete removal at worst, of the 10GbE upgradability of the 2/4/5 Bay V1500B option NAS’. Is this for real?
• Is the SNV5420 a new high performance M.2 NVMe?
• Why refresh all of these at the same time? Some solutions like the DS1823xs+ or DS224+ are very early in their expected run, so a refresh so soon seems unnecessary. So why now?

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