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Seagate 2.5 inch SAS hard drive bare silver aluminium casing with label showing model ST1800MM0149 1.8 TB 10000 RPM 256 MB buffer

Seagate

Seagate ST1800MM0149 1.8 TB 2.5" SAS 12Gb/s 10000 RPM 256 MB internal hard drive

SKU CH-EVXC-B62FN

A 2.5" 1.8 TB SAS 12Gb/s internal drive spinning at 10000 RPM with a 256 MB buffer for fast server storage

  • Total capacity1.8 TB
  • Interface typeSAS 12Gb/s
  • Form factor2.5 in (6.35 cm)
  • Packaging typeBare Drive
  • Rotational speed10,000 RPM
  • Mean latency12Gb/s
  • 8 TB capacity stores large datasets
  • 10,000 RPM spindle speed accelerates data access
  • SAS 12Gb/s interface enables fast transfers
  • 256 MB buffer smooths burst workloads
  • 5 inch form factor fits dense server bays

Capacity and form factor

The Seagate ST1800MM0149 is a 1.8 TB 2.5" internal hard drive built for servers and storage arrays that need fast, reliable capacity in a compact bay. Its 10000 RPM spindle speed and 256 MB buffer serve workloads where consistent throughput matters more than raw bulk.

1.8 TB at 10000 RPM

The 1.80 TB capacity handles operating systems, databases and active project files with low average latency. The 10000 RPM rotation keeps random I/O responsive, but sequential transfers will saturate well before a modern SSD, so the drive runs out of steam on sustained high-queue workloads.

SAS 12Gb/s interface limits

The SAS 12Gb/s interface caps peak bandwidth at 12 Gb/s, so the drive cannot exceed that ceiling even during burst reads from the 256 MB cache. Controllers or backplanes limited to 6 Gb/s will halve the available headroom, and the physical 2.5" form factor prevents use in 3.5"-only bays without an adapter.

How it compares

Measured against everything we stock in 3.5-Inch Internal Desktop HDDs, at today’s prices. Recalculated every night.

Price $237.99
Pricier than about 75% of the 4,938 comparable items (median $107.99).
Total capacity 1.8 TB
Typical for this category: the median of 2,372 items is 2 TB.
Price per TB $132.22 per TB
Pricier than about 70% of the 2,365 comparable items (median $62.21 per TB).

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Specifications

Product
Brand nameSeagate
Model nameST1800MM0149
Total capacity1.8 TB
Performance
Rotational speed10,000 RPM
Mean latency12Gb/s
Ports & slots
Interface typeSAS 12Gb/s
Size & build
Form factor2.5 in (6.35 cm)

Questions about this item

Will the SAS 12Gb/s interface work with my older 6Gb/s SAS controller?

The drive uses a 12Gb/s SAS interface which is backwards compatible with 6Gb/s SAS controllers, though it will run at the lower 6Gb/s speed.

How can I verify the drive is performing at 10000 RPM after installation?

Check the spindle speed reported in your RAID controller BIOS or SMART monitoring tools; it should show 10000 RPM for this model.

Does the bare-drive packaging include mounting screws or a SAS cable?

The product is supplied as a bare drive only; mounting screws and a SAS data cable must be purchased separately.

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