3.5-inch SATA surveillance hard drive, Seagate and WD, 1 to 16 TB, new and used

Seagate & WDSkyHawk · Purple · 3.5″ SATA

Surveillance & Enterprise Hard Drives · 1–16 TB

Surveillance HDD · Seagate & WD

3.5-inch SATA surveillance and enterprise drives, built for the duty cycle NVRs actually run — every channel, 7×24. We supply Seagate SkyHawk and WD Purple surveillance series plus enterprise-class models, from 1 to 16 TB, brand-new or used (tested).

1–16 TB · nine capacitiesSATA 3.5″ · internal interfaceSkyHawk · Purple · Seagate & WD linesNew & Used · used drives tested7×24 · NVR recording duty

CAPACITY & CONDITION

Capacity

Condition

Exact brand, model and price follow daily stock — send the capacity and condition you need on WhatsApp and we'll reply with today's available list. Every used drive is power-on tested and ships with its health report.

Get Best Price on WhatsApp Need the PDF datasheet? Get it on WhatsApp →

In-stock models: 3 days to your designated warehouse after payment · Out-of-stock or insufficient stock: 7–15 working days

Sample quantities are welcome — testing one or two units first is the normal way to start.

Every drive — new or used — is powered on and health-checked before it ships; used drives include a SMART health report.

1–16 TBnine capacity options

SATA 3.5″fits any NVR bay

2brands — Seagate & WD

7×24continuous duty design

This page covers the 3.5-inch SATA hard drives we supply for video surveillance projects: Seagate SkyHawk and WD Purple surveillance series, plus enterprise-class models from both brands for storage servers and archive pools. Nine capacities from 1 to 16 TB, available brand-new (factory sealed) or used (power-on tested, with health report). We don't publish a fixed model table, because the mix on the shelf changes with daily stock — tell us the capacity and condition you need, and we'll reply with what's available today.

Is this the right drive for you?

Plain-language guide — based only on what we actually supply.

NVR recording poolDrops into any 3.5-inch SATA bay — from single-bay shop NVRs to 8-bay rack recorders. Surveillance series like SkyHawk and Purple carry firmware tuned for many cameras writing at once.

Brand-new or used?Brand-new for front-line recording pools that must run for years; used (tested) stretches the budget for lab setups, spare bays and short-retention projects. Every used drive ships with its health report — you see the power-on hours before you pay.

Free capacity planningRecordable days = channels × bitrate × schedule. Send us your camera count and streams — we'll calculate the storage for you, free, before you buy a single drive.

Not the right pick if you need…

Portable or USB-powered backup — these are internal 3.5-inch drives
A tiny two-camera kit where recording stays on the camera's microSD — a Red Card MT covers that for less
A single copy of critical data on a used drive — for sole-copy archives choose brand-new, or add redundancy

Why a surveillance-rated drive for a video recorder?

An NVR writes every channel around the clock — a duty cycle far beyond what desktop drives are rated for. Seagate's SkyHawk and WD's Purple lines exist exactly for this: firmware and workload ratings built around continuous multi-stream video writes. For storage servers and archive pools we also supply enterprise-class models from both brands. Whichever you pick, the drive is matched to the job — not whatever happens to be lying around.

Seagate SkyHawk · WD PurpleEnterprise models availableUsed drives tested + report

Using your own freight forwarder? No problem.

For small and mid-size orders, we deliver directly to your designated forwarder's warehouse in China (EXW / FOB Guangzhou). From hand-over onward, international shipping and destination-side arrangements are handled by your forwarder — the way you already work.

EXW / FOB GuangzhouDelivery to your forwarder's warehouseNo minimum order

Note: no forwarder yet? For small orders we can also arrange door-to-door courier.

How to get a better price

Volume DiscountBulk quantities of a single capacity

Mix & Match DiscountMix any categories & models storewide in one order — no quantity limit

BETTER

End-User Project PriceEnd user with a real project? Send your requirements / BOQ — best price, plus professional system design & planning advice

BEST

All discounts are quoted personally — message me on WhatsApp ↑

Key Features

What you actually get — no invented numbers.

Seagate SkyHawk & WD Purple surveillance series — firmware built for 7×24 multi-camera recording

Enterprise-class models from both brands for storage servers and archive pools

Nine capacities: 1 / 2 / 4 / 6 / 8 / 10 / 12 / 14 / 16 TB

3.5-inch SATA — fits any standard NVR or server drive bay

Brand-new factory-sealed, or used power-on tested — used drives ship with a SMART health report

Free storage sizing — send camera count and bitrates, we calculate your recordable days

What we supply

No invented spec tables — just the honest version of what you'll actually receive.

SEAGATE · WD

Surveillance & enterprise series, 1–16 TB

Seagate SkyHawk and WD Purple surveillance drives, plus enterprise-class models from both brands. Brand-new factory-sealed, or used (power-on tested, health report included). The exact model list follows daily stock — message us the capacity and condition, and we reply with today's options.

STORAGE SIZING

How many days will it record?

Actual recordable days depend on channel count and bitrate — as a rough guide, 16 cameras at 4 Mbps fill 8 TB in about 11–12 days. Tell us your camera count and stream settings on WhatsApp and we'll size the storage for you, free.

Surveillance Hard Drive FAQ — Seagate & WD 1–16 TB

What is the difference between a surveillance hard drive and a regular desktop drive?

Seagate SkyHawk and WD Purple are surveillance-series drives engineered for 7×24 continuous NVR recording — the disk writes video around the clock, not the short bursts a desktop drive is designed for. We supply these plus enterprise-class models from both brands, all in the standard 3.5-inch SATA format NVRs use.

How many days of footage will an 8 TB drive hold?

As a rough guide, 16 cameras streaming at 4 Mbps fill 8 TB in about 11–12 days. Fewer cameras or lower bitrates stretch that — 8 cameras at 4 Mbps roughly doubles it to 22–24 days. Send us your channel count and bitrate and we will size the right capacity for your retention target.

What capacities are available?

Nine capacities from 1 TB to 16 TB, all 3.5-inch SATA. The range covers Seagate SkyHawk and WD Purple surveillance series plus enterprise-class drives from both brands, so you can match each NVR's bay count and retention requirement in a single order.

Do you sell new or used drives?

Both. New drives come factory-sealed. Used drives are power-on tested before shipping and each ships with a health report, so you know the condition of every unit before it goes into a customer's NVR. Specify new, used or a mix when requesting your quotation.

Will these drives fit my NVR?

They are standard 3.5-inch SATA drives — the format NVR hard-drive bays take. Check the maximum capacity per bay your recorder supports, then choose from the 1–16 TB range. Send us your NVR model and channel count and we will confirm a suitable capacity before you order.

How do you ship export orders?

For small and mid-size orders we deliver directly to your designated freight forwarder's warehouse in China, on EXW or FOB Guangzhou terms. From hand-over onward the international leg runs under your forwarder's control, so the shipment follows your own consolidation plan and routing.