9ZM278-150: Seagate Constellation ES.3 3TB 7200RPM SAS 3.5-Inch HDD
MPN: 9ZM278-150|By: Seagate

Starting from
$140
Indicative. Final pricing is confirmed with your quote.
In Stockships worldwide
- Condition:
- New (authorized channel)
- Warranty:
- Full manufacturer warranty
Prefer your own inbox? Email us about this part
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
Seagate lists 9ZM278-150 as a Constellation ES.3 3TB 7200RPM SAS 3.5-Inch HDD. Vendor-keyed firmware is the usual reason a mechanically identical drive is rejected by the controller, and a 3TB spare is not worth discovering that on. We check the firmware family against your controller before the drive ships.
Quote requests are answered within 48 business hours, with availability confirmed before you raise a purchase order rather than after.
Specifications
General
- Manufacturer part number
- 9ZM278-150
- Product Type
- Server Hard Drives
- Manufacturer
- Seagate
Technical specifications
- Capacity
- 3TB
- Rotational Speed
- 7200RPM
Interfaces & connectivity
- Drive Interface
- SAS
Physical
- Form Factor
- 3.5-Inch
These are the 6 facts we can state about 9ZM278-150 without inferring anything. Compatibility beyond this is confirmed per platform, on request, before you order.
Where the Seagate 9ZM278-150 is deployed
- Sourcing 9ZM278-150 against a build sheet that names it explicitly
- Growing bulk capacity in an existing disk shelf
- Migrating an archive tier off failing older disks
Who this part is for
- Backup and archive teams growing bulk capacity in an existing shelf
- IT teams swapping a failed drive in a live parity group
- Teams standardising a mixed drive estate onto one firmware family
What you get ordering this from us
Ordered by part number
Quoted and supplied against 9ZM278-150 specifically, so what arrives is what your build sheet asks for.
Compatibility checked
We confirm the part is supported on your platform before it ships, rather than leaving the check to you.
Firmware family matched
A mechanically identical drive with the wrong firmware is rejected by the controller; we check the family, not just the capacity.
Questions buyers ask about this part
Is 9ZM278-150 genuine and is the warranty intact?
Yes, new and sealed, with the Seagate warranty and the firmware update path intact. We do not sell refurbished stock as new, and we do not source grey-market units.
Will 9ZM278-150 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, POs from qualified organisations, net terms on approval, and banded pricing once the quantity is worth banding. Send the number and we will price it properly.
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.
