SkyHawk AI 32TB versus 24TB is the cleanest way to ask whether the top capacity is worth paying for. The 32TB ST32000VE000 adds 8TB per drive over the 24TB ST24000VE002, a 33.3 percent raw-capacity increase before protection overhead.
Both capacities sit in Seagate's current SkyHawk AI surveillance line and share the core workload story: CMR, SATA 6Gb/s, 7200 RPM, 512MB cache, 550TB/year workload, five-year warranty, up to 64 HD cameras and 32 AI channels. The decision is density, live price and recorder support.
Choose SkyHawk AI 32TB when the recorder is bay-limited or the extra 8TB per drive avoids another chassis, controller, rack slot or site visit. Choose SkyHawk AI 24TB when it is meaningfully cheaper per TB, the recorder does not support 32TB, or the retention target already fits comfortably at 24TB per bay.
Use this as the procurement-level screen before looking at live price rows.
| Decision point | SkyHawk AI 32TB | SkyHawk AI 24TB |
|---|---|---|
| Exact model | ST32000VE000 | ST24000VE002 |
| Capacity | 32TB | 24TB |
| Capacity gain | +8TB per drive | Baseline |
| Recording technology | CMR | CMR |
| RPM | 7200 RPM | 7200 RPM |
| Cache | 512MB | 512MB |
| Interface | SATA 6Gb/s | SATA 6Gb/s |
| Maximum sustained transfer | 285MB/s outer diameter | 285MB/s outer diameter |
| Workload rating | 550TB/year | 550TB/year |
| Camera / AI guidance | Up to 64 HD cameras / 32 AI channels | Up to 64 HD cameras / 32 AI channels |
| Warranty / Rescue | 5 years / Rescue may be offered in selected regions | 5 years / Rescue may be offered in selected regions |
| Best use | Bay-limited high-retention systems | High-capacity systems where price discipline matters |
| Main limitation | Top-capacity price premium and recorder max-size limits | Lower retention per bay |
Raw decimal capacity before RAID, filesystem overhead and recorder reservations. The 32TB model adds 8TB per drive, a 33.3 percent gain over 24TB.
| Drive count | 32TB raw | 24TB raw | Raw difference |
|---|---|---|---|
| 4 drives | 128TB | 96TB | 32TB |
| 8 drives | 256TB | 192TB | 64TB |
| 12 drives | 384TB | 288TB | 96TB |
| 16 drives | 512TB | 384TB | 128TB |
| 24 drives | 768TB | 576TB | 192TB |
One exact live row is currently matched for ST32000VE000, but both sides of ST32000VE000 / ST24000VE002 are not simultaneously in exact live stock. Relevant live alternatives are shown below for pricing context.
Live prices · updated every 4-5 hours · last checked 1 hr ago · one side may be unavailable in exact live stock
| Model | Capacity | Recording | RPM | Workload TB/yr | Warranty | $/TB | Price | |
|---|---|---|---|---|---|---|---|---|
| 32TB ST32000VE000 | 32TB | CMR | — | 550 | 5 yr | $36.25 | $1160 | Buy |
| 20TB ST20000VE002REFURB | 20TB | CMR | — | 550 | 5 yr | $25.00 | $500 | Buy |
Workload rating is recorded per part number from Seagate's datasheet for that exact model, not blanketed across the line — two drives of the same capacity can differ because they are different generations. A dash means the figure is not stated for that listing. Recording technology comes from the manufacturer's published CMR/SMR list; a model absent from that list is shown as UNVERIFIED rather than guessed. Rows priced above 3× this line's in-stock median are flagged and excluded from the winner callout and from every median we compute.
This table is computed from live DatacenterDisk rows when an exact in-stock match exists. It is intentionally blank for unavailable models rather than filled with stale prices.
| Live model | Drive price | $/TB | 1 drive | 4 drives | 8 drives |
|---|---|---|---|---|---|
| ST32000VE000 | $1160 | $36.25 | 32TB raw / $1160 | 128TB raw / $4640 | 256TB raw / $9280 |
The capacity gain is large enough to change system design. Four drives move from 96TB raw to 128TB raw. Eight drives move from 192TB to 256TB. Twenty-four drives move from 576TB to 768TB. Those numbers can decide whether a site fits inside the recorder it already owns.
The gain is not automatically worth any premium. A 33.3 percent capacity increase is economically clean only when the 32TB price premium is near or below that capacity gain, or when avoiding chassis expansion is worth the extra spend.
The 32TB case gets stronger when a bay is expensive. A full NVR, a rackmount video server, a new HBA, a second shelf, more rack space and another power path can cost more than the difference between capacities. In those cases, paying for density can reduce the rest of the bill.
The 24TB case gets stronger when bays are open. If the recorder has unused slots or the retention target is modest, buying 24TB at a better live $/TB can be the disciplined choice. Capacity you do not need is not a feature.
Retention scales with usable capacity when all other inputs stay fixed. A 32TB drive gives one-third more raw space than 24TB, so the same camera set and bitrate gets roughly one-third more footage before overhead. RAID parity, reserved recorder space and filesystem behavior reduce the usable number.
The real driver remains bitrate. Continuous 4K H.264, high frame rate, busy scenes and all-day recording raise storage needs sharply. H.265, lower frame rate, motion-triggered recording and quieter scenes reduce them.
Seagate's current SkyHawk AI data sheet lists the 32TB model at 8.2W average read/write and 6.7W idle average, while the 24TB model is listed at 7.8W average read/write and 6.3W idle average. The 32TB drive therefore buys more raw capacity with only a small listed power increase, but that is not a blanket promise of lower total system power.
A chassis still has to cool the actual drives installed. Use the data-sheet power numbers for enclosure budgeting and confirm airflow in the finished recorder, especially if the drives sit in a cabinet or wiring closet.
Buy 24TB when the 32TB row is scarce, priced far above its capacity gain, or unsupported by the recorder. A supported 24TB drive that meets retention is better than an unsupported 32TB drive that looks efficient on paper.
24TB also makes sense for phased upgrades. Replacing every disk at once can create same-age failure risk and a large cash outlay. If the system allows mixed volumes rather than parity striping, smaller purchases over time can be operationally cleaner.
Eight terabytes per drive, which is 33.3 percent more raw decimal capacity before RAID, filesystem overhead and recorder reservations.
Yes. Seagate's current SkyHawk AI data sheet lists ST32000VE000 and ST24000VE002 as CMR.
It is worth it when bays are scarce, when the live price premium is close to the 33.3 percent capacity gain, or when 32TB avoids another recorder, shelf, controller or service visit.
No. The data sheet lists only drive-level power values. Lower power per usable TB may be true in a specific design, but it should be calculated from exact power, capacity and array overhead rather than assumed.
No. Price per TB is the first screen, not the whole decision. Match recording method, interface, bay count, firmware support, warranty position and rebuild risk before accepting the cheapest row.
Specification claims on this page were checked against the pages below on 1 September 2026. Where a widely-repeated figure did not survive that check, we report what the source says now and say so in the text rather than repeating the familiar number.