Seagate SkyHawk AI exact model · 20TB
ST20000VE004 sits inside the most confusing SkyHawk AI capacity tier because Seagate currently lists several legitimate 20TB revisions. VE004, VE003 and VE002 are all SkyHawk AI 20TB models, while ST20000VE000 is an OEM-channel 20TB record. That makes “SkyHawk AI 20TB” insufficient for an exact purchase. This guide isolates VE004, which the current data sheet lists with 512MB cache and a 240 MB/s sustained-transfer figure, and shows how to keep it separate from neighboring revisions.
Quick answer
Quick answer: what is ST20000VE004?
ST20000VE004 is a 20TB SkyHawk AI retail revision using SATA 6Gb/s, CMR and a helium drive design.
Its current published specifications include 512MB cache, up to 240 MB/s sustained transfer, 550TB/year workload, 2.5-million-hour MTBF class and a five-year limited warranty.
The most important buying rule is revision discipline: a 20TB capacity match does not prove that an offer is VE004.
Start here
A simple way to decide on ST20000VE004
Buying options
ST20000VE004 availability and price
Offers appear here only when the model number matches ST20000VE004. If Amazon temporarily stops returning a price or image, the last successfully verified value is retained and clearly labelled instead of disappearing.
If this model is hard to find
Nearby SkyHawk AI capacity alternatives
These are the closest capacities in the same SkyHawk AI family. Check your recorder's per-bay limit before moving to a larger drive, and compare total usable storage rather than headline capacity alone.
At a glance
ST20000VE004 specifications
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Buying guide
What to check before and after purchase
Use the sections below in order if you are still deciding. Start with model identity and recorder support, then work through performance, power, warranty, value and the final checkout checks.
What matters
The 20TB suffix problem is real
Seagate’s support index shows ST20000VE002, ST20000VE003 and ST20000VE004 as 20TB SkyHawk AI video drives, plus ST20000VE000 as an OEM 20TB record. Retail pages frequently collapse those variants into a single selectable product. If you care about the VE004 specification set, make the seller expose ST20000VE004 before checkout. A capacity filter cannot perform that job, and a stock photo of a SkyHawk label is not enough evidence.
Model identity
VE004 is a 512MB revision with a 240 MB/s rating
The current family data sheet lists ST20000VE004 with 512MB cache and up to 240 MB/s sustained transfer. VE003 is another 512MB 20TB revision but has a different published transfer figure; VE002 is listed with 256MB cache. These differences are exactly why Cloudzat does not merge every 20TB offer into one specification card. The NVR may not care about a benchmark difference, yet the buyer should still receive the revision that was advertised.
VE004 is especially easy to confuse with VE003 because both are current 20TB SkyHawk AI entries and both can appear under generic retailer variation pages. The practical rule is to preserve the suffix all the way from search result to invoice. If a listing is priced as VE004 but the model field changes when a condition or seller is selected, stop and recheck the offer. Marketplace variation behavior is a common source of accidental SKU substitution.
What matters
Do not confuse retail VE004 with OEM VE000
ST20000VE000 appears separately in Seagate support as an OEM 20TB SkyHawk AI model. OEM does not automatically mean counterfeit or defective, but the sales channel, warranty handling and packaging expectations can differ. If a merchant advertises ST20000VE004 and ships VE000, that is not an exact match. Cloudzat’s retail-versus-OEM guide explains the channel distinction; this page simply refuses to treat the codes as interchangeable.
Drive technology
CMR status is straightforward at 20TB
Seagate places SkyHawk AI 20TB in the CMR category. Unlike the 32TB model, the 20TB tier is not the Mozaic HAMR CMR step in the current technology list. That keeps the storage interface conventional from the host’s perspective. Compatibility can still fail for other reasons: the recorder may cap per-bay capacity below 20TB, require a newer firmware build or use a qualified-drive policy that has not been updated for this revision.
Compatibility
20TB can be a practical NVR sweet spot
For many installations, 20TB offers a useful balance between density and recorder support. It provides more retention than 16TB without demanding the same host readiness as 24TB or 32TB. The economic comparison should include how many bays are available, whether replacing the NVR would be necessary for larger disks and whether parity or mirror overhead reduces usable capacity. A slightly higher price per terabyte can still be rational if it avoids a chassis upgrade.
The 240 MB/s published rate for VE004 is lower than the 285 MB/s shown for some neighboring 20TB revisions, but that difference should not be treated as a simple quality ranking. Surveillance disks are purchased for continuous multi-stream duty, compatibility and lifecycle support. If the NVR workload is well within the disk's intended class, a small sequential headline advantage may have no practical effect on recording reliability or retained footage.
Power
Power and cooling should be evaluated with the exact revision
ST20000VE004 is listed around 2.0 A typical startup current on 12V, 8.2 W average read/write power and 6.7 W idle power. Those values are not identical to every 20TB SkyHawk AI revision. In a dense NVR, use the correct number when estimating spin-up load and heat. If the appliance begins dropping drives only when all bays are populated or after a reboot, inspect the power supply and backplane before assuming several disks failed simultaneously.
What matters
A 60°C ceiling should not become an operating goal
The current specification set lists ST20000VE004 for drive-reported operation from 10°C to 60°C. Surveillance recording is continuous enough that airflow problems may appear after hours rather than minutes. Check the warmest bay, especially in rack enclosures where front filters are dusty or rear exhaust is obstructed. Thermal margin helps reliability and also reduces the chance that an NVR throttles or reports intermittent disk-health warnings during heavy playback or export activity.
Compatibility
The workload figures describe the media, not the whole recorder
SkyHawk AI is rated for 550TB/year and the family supports up to 64 HD streams plus 32 AI channels. A recorder can still be the limiting component. CPU decode, network interfaces, RAID behavior, database traffic and simultaneous playback can constrain the system before the drive reaches its published workload. Use the media rating to choose the right class of disk, then size retention from actual stream bitrates rather than from the 20TB number alone.
Twenty terabytes is also a useful threshold for checking older recorder file-system assumptions. Some appliances support the SATA device electrically but have software limits inherited from earlier capacity generations. Before replacing several smaller disks with VE004, confirm per-bay capacity, total array ceiling and whether the recorder can expand an existing pool without reformatting. The safest migration plan includes a rollback path and a separate copy of any footage that must be preserved.
Warranty
Warranty is five years on the current VE004 support record
Seagate’s current support page lists ST20000VE004 with a five-year limited warranty. The family data sheet describes three years of Rescue in eligible regions. Marketplace language can blur manufacturer coverage, seller coverage and Rescue into one phrase, so verify them independently. Save the serial number and invoice, especially when a variation selector can switch between retail, OEM, renewed or third-party fulfilled units without making the change obvious.
Value
A low 20TB price may simply be a different revision or condition
When several 20TB codes exist, the cheapest offer is not automatically the best VE004 deal. Check whether it is VE002, VE003, OEM VE000, renewed stock or a system pull. Price-per-terabyte should be calculated after revision and condition are settled. The buying section only uses listings that clearly identify VE004. If Amazon does not provide a current featured price, the page points you to buying options without inventing one.
Support
Use serial-specific firmware and health support
Firmware should be looked up through Seagate’s serial-number path. That keeps a VE004 owner from installing a package intended for another 20TB revision merely because a forum post says “SkyHawk AI 20TB.” SkyHawk Health Management and SeaTools can help diagnose the disk, but NVR logs remain important. A disappearing drive may reflect power, cabling, backplane or host firmware rather than a media failure.
A proper price comparison should keep VE004 separate from recertified enterprise disks and standard SkyHawk models. Those alternatives can be cheaper per terabyte, but they carry different workload positioning, firmware behavior and support context. Let the shopper choose between categories deliberately. Mixing them into one undifferentiated “20TB hard drive” ranking makes the cheapest result look authoritative when it may solve a different problem.
Before checkout
The VE004 checkout rule
Do not click purchase until ST20000VE004 appears clearly, 20TB is confirmed, the offer is one internal SATA SkyHawk AI drive, condition is known, warranty handling is understandable and the NVR supports 20TB per bay. When the drive arrives, compare the label with the order record before installing it into a production recorder. That single habit prevents most of the revision-mixing problems this page is designed to solve.
Official Seagate references
Specifications and support terms can change. Use the manufacturer references below, and use Seagate's serial-number tools when checking firmware and warranty eligibility.
Questions people ask
ST20000VE004 questions buyers ask
What is the difference between ST20000VE004 and ST20000VE003?
Both are current 20TB SkyHawk AI revisions. The current data sheet lists different sustained-transfer figures even though both have 512MB cache, so they should not be treated as one exact SKU.
How is ST20000VE002 different from VE004?
VE002 is an older 20TB revision listed with 256MB cache, while VE004 is listed with 512MB.
Is ST20000VE000 the same as ST20000VE004?
No. Seagate identifies ST20000VE000 as an OEM 20TB model. VE004 is a separate video-hard-drive revision.
Is ST20000VE004 CMR?
Yes. Seagate lists SkyHawk AI 20TB in the CMR category.
What is the ST20000VE004 transfer rating?
The current data sheet publishes up to 240 MB/s sustained transfer.
What warranty is shown for VE004?
Seagate’s current support index lists five years limited warranty for ST20000VE004.
Will any 20TB-capable NVR accept VE004?
Not necessarily. Per-bay capacity is only one check; firmware, drive qualification and the recorder’s storage implementation also matter.
How much power does VE004 use?
Seagate lists about 8.2 W average read/write and 6.7 W idle, with 2.0 A typical 12V startup current.
Why does Cloudzat reject generic 20TB offers here?
Because a generic title cannot distinguish VE004 from VE003, VE002 or OEM VE000. The full part number is what separates these revisions.
Should I choose 20TB or 24TB SkyHawk AI?
Compare NVR support, usable retention, available bays and current array cost. Twenty terabytes can be the easier fit in hardware that has not been qualified for 24TB.