One interface caps every drive on the shelf at the same ceiling · review
Gigastone Home Server SSD 1 TB × 4, power loss protection and ECC named review
Four 1 TB drives for a NAS array, and the only listing on this shelf that names power loss protection — with the word TBW on the page and no figure behind it.
Amazon.com listed it on October 26, 2026, but no current offer passed our price check, so no price is quoted. The Amazon.com page exists, but nobody was selling the unit; a listing in that state is often a third-party import.
Models on this shelf that Amazon.com did sell on that date:
This is the only multipack on this shelf: four 1 TB 2.5-inch SATA drives sold as a set for a NAS array. On October 26, 2026 Amazon.com listed it with no seller, so the comparison that usually starts a multipack page — divide the price by four — cannot be made today.
What the pack offers is published in the first and third bullets, and some of it the two single drives here do not offer at all.
Power loss protection, named in the first bullet alongside ECC, data protection, easy integration and silent operation. Neither WD listing on this shelf mentions it — the arrangement that lets a drive finish what it was writing when the supply stops, which is exactly the failure a NAS array suffers. It is named rather than quantified: no capacitor count and no hold-up time.
The third bullet names Synology, QNAP and Asustor as compatible brands, which is checkable against an enclosure already owned. Some enclosures accept only drives from their maker’s own compatibility list, so a drive that names the brand is answering a real question, and the enclosure’s own list is the one that settles it.
What is missing is the number behind the claim. The first bullet says “24/7 superior NAS Cache with reliable TBW” — it names the quantity and omits the figure. The WD Blue 3D NAND on this shelf publishes up to 600 TB with the JEDEC method behind it. This page publishes the word TBW and no total at all, on a drive sold for continuous operation, which is where the written total matters most.
The first bullet also opens with a ranking: “No.1 NAS SSD choice in heavy workloads NAS systems”. Nothing on the page makes that readable, and it is recorded here as the maker’s claim rather than as a fact.
The speed is up to 550 MB/s sequential, below the 560 of both WD drives here, with no direction named and no writing figure. The fourth bullet gives TLC 3D NAND with an SLC cache — a flash arrangement, not a DRAM cache, and the distinction matters because an SLC cache is fast until it fills and then is not. No controller is named.
The fifth bullet gives a three-year replacement warranty and lifetime free technical support. Neither WD drive on this shelf publishes a term at all, so on the pack the obligation is the one thing it has that they lack.
Where it holds up, and where it stops
Strengths
The only listing on this shelf that names power loss protection, which is the failure a continuously running array actually suffers
Names ECC and silent operation alongside it, and names Synology, QNAP and Asustor as compatible enclosure brands
A three-year replacement term with lifetime technical support, where both WD drives on this shelf publish no term at all
Publishes the 7 mm (0.28 in) height, which matters in a dense enclosure as much as in a laptop
Four matched drives in one purchase, which is what a RAID array wants rather than four separate orders
Compromises
No Amazon.com offer on October 26, 2026: the pack was listed with no seller
Names TBW and publishes no figure, on a drive sold specifically for round-the-clock operation
No MTBF, no MTTF and no writing figure, behind a first bullet entirely about reliability
The "No.1 NAS SSD choice" ranking in the first bullet is not readable from anything on the page
The 550 MB/s is given as a transfer speed without a direction, and no controller is named
Specifications
Capacity
1 TB each, four drives, four terabytes in total — stated in the title as a 4-Pack
Form factor
2.5-inch — stated in the title and in the fourth bullet, which gives the drives as 2.5-inch SATA III units for NAS, business server, console, laptop and desktop use
Height
7 mm (0.28 in) — stated in the fourth bullet in parentheses, which is the figure a laptop bay or a dense enclosure depends on
Stated sequential read figure
Up to 550 MB/s — stated in the title and at the end of the first bullet as a sequential transfer speed, without a direction. Both WD Blue drives on this shelf publish 560
Stated sequential write figure
Not published on the listing — the 550 MB/s figure is given as a sequential transfer speed without naming a direction, and no separate writing rate appears anywhere
Stated random IOPS
Not published on the listing — no figure in IOPS appears in the title or in any of the five bullets, and neither WD listing on this shelf publishes one
TBW rating
Named without a figure — the first bullet offers "reliable TBW" and gives no total in terabytes written. The WD Blue 3D NAND on this shelf publishes 600 TB with its method
Stated MTBF
Not published on the listing — no figure in hours appears, in either the MTBF or the MTTF form, on a page whose first bullet is about reliability under heavy workloads
DRAM cache presence
Not published on the listing — the fourth bullet names TLC 3D NAND flash with an SLC cache, which is an arrangement within the flash rather than memory on the drive. An SLC cache is fast until it fills; a DRAM cache is a different thing and is not claimed
Controller family
Not published on the listing — no controller is named anywhere on the page, as on both WD listings here
Warranty length
Three years, as a replacement warranty, with lifetime free technical support — stated in the fifth bullet. Neither WD listing on this shelf publishes a term
Amazon reference
B0D4K2CT6K
EAN
0804272770285
On Amazon.com
Amazon.com listed it on October 26, 2026, but no current offer passed our price check, so no price is quoted.
The questions that come up before an order
What is power loss protection?
The arrangement that lets a drive finish the write it was performing when the supply stops, rather than leaving it half done. The first bullet names it and gives no capacitor count or hold-up time. Neither WD listing on this shelf mentions it.
What is the TBW rating?
The page does not say. The first bullet uses the phrase "reliable TBW" and publishes no total. The WD Blue 3D NAND on this shelf publishes 600 TB and the JEDEC method behind it.
Will they work in my NAS?
The third bullet names Synology, QNAP and Asustor as compatible brands. Some enclosures require drives from their maker’s own compatibility list, which is a question for that enclosure’s page rather than this one.
The buyer this one serves, among network and storage gear
Filling a four-bay enclosure in one order with drives that name power loss protection and a three-year term — once the pack is back in stock.
What this one costs among network and storage gear
Details checked on October 26, 2026.
Sources
Specifications: the manufacturer sheet for network and storage gear and the matching Amazon product page. Prices and availability: Keepa. Every figure on this page names its source.
1 TB · 2.5-inch · up to 540 MB/s read · dynamic write acceleration named · 256-bit hardware encryption to three named standards · three-year limited warranty · no write figure, no TBW, no MTBF
A one-terabyte drive that publishes a term, a named write acceleration mechanism and three encryption standards by name, and that never quantifies writing or endurance.
Best for: A machine where encryption to a named standard is a requirement and the drive will be read from far more than it is written to.
2 TB · 2.5-inch · SATA III · up to 540 MB/s read · up to 500 MB/s write · three-year warranty ending at a written total the page never states · no MTBF · no controller named
A two-terabyte drive whose warranty is explicitly limited by a written total, and whose page never says what that total is.
Best for: A desktop machine or a laptop needing two terabytes on this interface, bought by someone who will ask for the written total before relying on the term.
1 TB · 2.5-inch · SATA III at 6 Gbps · up to 550 MB/s read · up to 500 MB/s write · TBW rating of up to 480 TB · 2 million hours MTBF · shock resistance to 1500 G · no warranty term
A one-terabyte drive that publishes both sequential figures, a written total, a population statistic and a shock figure with its duration, and that names no warranty term at all.
Best for: A notebook or a desktop machine that is knocked about, where a shock rating and a written total matter and the term will be checked with the seller.
