ST20000NM003D: Seagate Exos x20 20TB 7200RPM SAS SED 3.5" Hard Drive
MPN: ST20000NM003D|By: Seagate

Starting from
$1,345
Indicative. Final pricing is confirmed with your quote.
In Stockships worldwide
- Condition:
- New (authorized channel)
- Warranty:
- Full manufacturer warranty
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Bulk order? Request volume pricing
Authorized & warrantied
Sourced through authorized distribution, with the full manufacturer warranty.
Compatibility checked
Validated against your server platform before dispatch.
Delivery & lead time
Confirmed with your quote, including expedited freight where available.
Business & public sector
POs, net terms and volume pricing for qualified organizations, government and edu.
Product overview
The Seagate Exos x20 20TB 7200RPM SAS SED 3.5" hard Drive is supplied under part number ST20000NM003D. Replacing a failed drive means matching interface, form factor and firmware to the backplane it is going into. This is a SAS unit. Send us the server model and we will confirm the fit rather than leave you to check it.
Ask for the datasheet and firmware notes with the quote; we would rather you check our claim than take it.
Specifications
General
- Manufacturer part number
- ST20000NM003D
- Product Type
- Server Hard Drives
- Manufacturer
- Seagate
Technical specifications
- Capacity
- 20TB
- Rotational Speed
- 7200RPM
Interfaces & connectivity
- Drive Interface
- SAS
Specifications for ST20000NM003D as published by Seagate. Where a value is absent it is because we could not verify it, not because it does not exist. Ask and we will check.
Where the Seagate ST20000NM003D is deployed
- Sourcing ST20000NM003D against a build sheet that names it explicitly
- Rebuilding a parity group after a drive failure
- Holding a firmware-matched cold spare per chassis family
Who this part is for
- IT teams swapping a failed drive in a live parity group
- Procurement replacing drives out of a maintenance contract
- Backup and archive teams growing bulk capacity in an existing shelf
What you get ordering this from us
Ordered by part number
ST20000NM003D is what is quoted and ST20000NM003D is what ships; where an alternate code is genuinely the same part we name it rather than swap it silently.
Volume pricing
The listed price is per unit; tiered pricing applies at quantity and purchase orders are accepted.
Spares held to a fleet standard
Tell us the chassis you run and we will keep the spare consistent with what is already in the shelf.
Questions buyers ask about this part
Is ST20000NM003D genuine and is the warranty intact?
Yes. It ships new in Seagate packaging, which is what keeps the warranty and the firmware entitlement valid. Anything we cannot supply that way we tell you about before you order.
Will ST20000NM003D work in my server?
Send the server model or the shelf it is going into. Vendor-keyed firmware is the usual reason an identical-looking drive is rejected, so we check that alongside interface and form factor.
Do you accept purchase orders and quote at volume?
Yes. Purchase orders are accepted from qualified organisations, net terms are available on approval, and tiered pricing applies at quantity. Tell us how many you need.
Compare other Server Hard Drives we stock
| Model | Brand | Key spec | Availability | From |
|---|---|---|---|---|
| WD Ultrastar DC HC550 16TB 7200RPM SATA 6Gb/s 512e 3.5-inch Data Center Hard Drive | Western Digital | Capacity: 16TB | In Stock | $345 |
| Toshiba MG09 16TB 7200RPM SATA 6Gb/s 512e 3.5-inch Enterprise Hard Drive | Toshiba | Capacity: 16TB | In Stock | $335 |
| Hitachi HGST Ultrastar He10 8TB 7200 RPM 12Gb/s SAS 512e 3.5"-inch Enterprise Hard Drive | Hitachi | Capacity: 8TB | In Stock | $190 |
| Dell 4TB 7200RPM 12Gb/s SAS 512e 3.5-inch Hot-Plug Nearline PowerEdge Hard Drive | Dell Technologies | Capacity: 4TB | In Stock | $155 |
| HPE 4TB 7200RPM 12Gb/s SAS 512e 3.5-inch LFF Smart Carrier Midline ProLiant Hard Drive | HPE | Capacity: 4TB | In Stock | $155 |
| HP 2TB 7200RPM 6Gb/s SAS 512n 3.5-inch LFF Smart Carrier Midline ProLiant Gen8 Hard Drive | HP | Capacity: 2TB | In Stock | $80 |
Browse all Server Hard Drives or everything we stock from Seagate.
Specifying a system, not just the part?
Bulk capacity usually sits behind the flash tier that feeds a training cluster rather than under it.
