Prime Big Deal Days NAS Deals, Measured
Live prices updated · 24 in-stock products · tracked since July 1, 2026 · prices in this category are re-checked about once a day on a rolling cycle - the time above is our newest price, not every row's
Ran October 6 - October 7. A measured retrospective will follow the same method as our other event reports.
A discounted NAS is only half a purchase: the drives usually cost more than the box. Today 4 of 24 in-stock items sit at or near their own recorded low. Our NAS tracking began July 1, 2026, after June's Prime Day, so there is no event history to compare against - price the drives first with the fill-basket tool.
We measure every price against that item's OWN recorded history, not against a list price - list prices get raised before a sale, which is documented and cited on this site's event pages. A verdict badge means: AT/NEAR LOW is close to the lowest price we recorded for that item over the days we tracked it in the last 30 - each badge prints that number of days - in a record where its price has actually moved (a price that has not moved is not a low, and reads TYPICAL); TYPICAL is ordinary for it; ELEVATED is above where it usually sits; NEW means we have not tracked it long enough to say. No percentage-off-list figure appears anywhere on this site as a measure of whether a price is actually good.
The evidence for why we do it this way is our own: the June 2026 Prime Day retrospective measured whether the last comparable event moved prices, category by category, before any of these pages were written.
Live nas devices picks, verdict-badged
Today's verdict distribution: 4 of 24 in-stock items are at or near their own recorded low today; 18 are typical for themselves; 1 are elevated above their own usual price, and 1 has too short a record to judge yet. Each count compares an item with its own recorded price; no past price is printed for any listing.
Which drives each Synology model here accepts under DSM 7.3: DS225+ · DS425+ · DS925+ · DS1525+ · DS1825+ - what an unlisted hard drive, 2.5-inch SSD and M.2 SSD can each do, per Synology's own table.
Buying a discounted NAS? Price the drives first
The box is usually the smaller half of the build. The fill-basket tool prices a NAS plus the drives to fill it at live prices, so you can see what a box discount is worth to the total before the event starts. 17 of the in-stock units have four or more bays where our spec table sources the count.
What to watch in NAS devices this event
Most NAS units are sold diskless, and that single fact changes how an event discount should be read. The chassis is the smaller part of the total cost once it is filled; a four-bay unit filled with NAS-rated drives at today's prices usually costs several times the box. A good price on the box does not make the build cheap, and a build can be a poor buy even when the box is at its own recorded low.
Every row in the table above is one unit, as its cheapest in-stock offer, with condition shown and a verdict against that unit's own recorded price. Bay count is listed where our spec table sources it; we do not infer bay counts from model names, because an inference dressed as a specification is the failure our compatibility pages exist to avoid.
Our NAS device tracking began on 1 July 2026 - after June's Prime Day - so this category has no measured event history at all. The June section below says so rather than borrowing another category's result.
Compatibility is the other half. Synology, QNAP, Asustor and TerraMaster each publish drive compatibility lists, and the rules differ: some vendor lists are advisory, some affect support. Our compatibility pages match the exact part number, never a substring, and say plainly where a vendor list is category-level rather than per-machine.
Price the drives before you buy the box
The fill-basket tool prices a complete build: the NAS plus the drives to fill it, at live prices, at the capacity you choose. Run it before the event, not during, and you will know what a box discount is actually worth to your total - often a smaller share than the headline suggests.
Capacity per drive changes the arithmetic more than the box does. Fewer, larger drives can cost more up front and less per terabyte; more, smaller drives spread risk across more spindles. Our NAS drive pages rank NAS-rated drives by cost per terabyte, live.
If you are buying drives and a box together, badge-check both. An event can discount one and not the other, and the part that did not move is usually the expensive one.
What a NAS listing does and does not include
Read the listing for what is in the box. Most units are diskless; some are sold pre-populated with drives, and the drive price is then folded into the total in a way that makes the box look expensive or the drives look cheap, depending on which you compare against. Our table lists the unit as sold, and where a listing includes drives we do not split its price into parts we cannot see.
Memory, network ports and expansion slots vary across a vendor's range more than the bay count suggests, and an event is a poor moment to discover that the unit you bought cannot take the network card or cache drive you planned. Our NAS devices hub carries the sourced specifications we hold per unit and says where a specification is not sourced rather than inferring it.
Plan redundancy before capacity. A four-bay unit with one drive's worth of parity holds three drives' worth of data; the same unit with two drives' worth holds two. That choice, not the box discount, decides how many terabytes you need to buy - and therefore how much the drives, which are usually the expensive part, will cost.
What June's Prime Day measured for this category
Not measurable: our tracking for this category began July 1, 2026, after June's Prime Day ran 2026-06-23 to 2026-06-26. We do not borrow another category's result to fill the gap. The coverage table in the June retrospective lists what could be measured and why the rest could not.
The trap: a cheap box and expensive drives
The event trap for NAS buyers is the discounted diskless unit bought on impulse, followed by the discovery that filling it costs several times as much and the drives were not on sale. The box discount was real; the build was not cheap.
Price the full basket first. If the drives are the expensive part - they usually are - their verdicts matter more than the box's.
An event is not a reason to start a NAS build. If you do not already know what the NAS will hold and how much space it needs, the right purchase this week is none. Buy when you have priced the whole build, and when the parts you are buying are each low for themselves.
The standing nas devices pages
- NAS devices hub - Every tracked unit, live.
- Fill-basket tool - Price the box plus the drives.
- NAS hard drives - NAS-rated drives by cost per TB.
- Drive compatibility - Vendor lists, exact part match.
- Recertified drives - The cheaper way to fill bays.
Frequently asked questions
Did NAS devices get cheaper on June's Prime Day?
We cannot say: our NAS device tracking began July 1, 2026, after the June 23-26 event. The event window has no NAS-device data, and the June retrospective's coverage table states it.
Does a NAS come with drives?
Most do not - they are sold diskless. The drives are usually the larger part of the build cost, so price them before the box; the fill-basket tool does both together.
Is a discounted NAS a good deal?
Only if the full build is. Today 4 of 24 in-stock items sit at or near their own recorded low; check the drives' verdicts too, since an event can discount the box and not the drives.
How many bays do I need?
Enough for the capacity you need plus redundancy, with room to grow. 17 of the units in stock today have four or more bays where our spec table sources the count.
Do NAS vendors restrict which drives I can use?
Some publish compatibility lists that affect support; the rules differ by vendor and sometimes by machine. Our compatibility pages match exact part numbers and say where a list is category-level.
Should I fill a NAS with recertified drives?
In a redundant array, recertified drives are the cheapest honest terabyte - verify SMART on arrival. Our recertified page measures the discount against new, model for model.
Other Prime Big Deal Days categories
Consumer SSD · External hard drives · Portable SSD · microSD · PS5 SSD · Consumer RAM · Enterprise & refurbished · High-capacity HDD (20TB+) · Gaming SSD (Gen4 & Gen5) · UPS & PDU · 10/25/40/100GbE networking · Enterprise flash, tape & JBOD · Surveillance: NVRs & drives · Racks, rails & server PSUs · Mini PCs for home servers & NAS · Local AI hardware: GPUs, RAM & NVMe · Gaming PCs & components · Thunderbolt & USB4 docks · NVMe & M.2 enclosures · Drive caddies, trays & adapters · HBAs, RAID & SATA cards · SAS & SATA cables · Drive docks & duplicators · DAS & RAID enclosures · USB flash drives · CFexpress & SD camera cards · KVM switches & remote access · Raspberry Pi & SBC storage · NAS upgrades: RAM, NICs & cache · DIY NAS cases & boards · 2.5GbE & 10GbE home networking · SATA SSDs · Portable power stations · Jackery · Anker SOLIX · EcoFlow · BLUETTI · Home backup power (2kWh and up) · NAS hard drives · Seagate IronWolf · WD Red Plus & Red Pro · Shuckable external drives · CPUs · Ryzen 7 9800X3D and X3D CPUs · the event hub
A category page exists only while it lists at least 4 in-stock products. Prices and badges are live; this page shows no historical price for any listing.