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3.5 inch enterprise hard drive in silver metal casing with server tray installed

Western Digital

Western Digital P37677-001 18TB 3.5" 7200 RPM SATA internal hard drive

SKU CH-8PBY-E94EM MPN P37677-001

An 18 TB 3.5" enterprise hard drive with a 7200 RPM spindle, 512 MB cache, CMR recording and a sustained transfer rate up to 269 MB/s

  • Total capacity18 TB
  • Interface typeSATA 6.0Gb/s
  • Form factor3.5 in (8.89 cm)
  • Recording methodCMR
  • Rotational speed7,200 RPM
  • Cache memory512 MB
  • Massive 18TB capacity stores vast enterprise datasets
  • 7200 RPM spindle delivers sustained 269 MB/s transfer speeds
  • Helium-sealed design reduces friction for reliable high-capacity operation
  • 512MB cache accelerates frequent read and write workloads
  • Fits Gen8 and Gen9 ProLiant servers with included 3.5" tray

18 TB Enterprise SATA Drive

The Western Digital P37677-001 is an 18 TB 3.5-inch hard drive built for enterprise servers, storage arrays and workstation computers. It runs at 7200 RPM on a SATA 6.0 Gb/s interface with a 512 MB cache and CMR recording technology. The helium-sealed design supports sustained high-throughput workloads in compatible Gen8 and Gen9 ProLiant systems.

Suited For Bulk Storage Arrays

This drive suits administrators expanding Gen8 ProLiant DL, ML, BL or SL servers and HPE D3600 or D3700 storage arrays. It is not for builders who need a second card or buyers who want more storage in a laptop form factor. The 3.5-inch tray limits installation to bays that accept that specific chassis.

Sustained Transfer Up To 269 MB/s

Under continuous load the drive delivers a sustained data transfer rate up to 269 MB/s thanks to its 7.2K RPM spindle and helium platform. CMR technology keeps write performance consistent during long backup or analytics jobs. Power Disable on Pin 3 allows host-controlled power cycling without removing the tray.

How it compares

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

Price $381.99
Pricier than about 89% of the 4,938 comparable items (median $107.99).
Total capacity 18 TB
Higher than about 93% of the 2,372 comparable items (median 2 TB).
Price per TB $21.22 per TB
Cheaper than about 92% of the 2,365 comparable items (median $62.21 per TB).

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Specifications

Product
Brand nameWestern Digital/HP
Product lineGeneration 8
Model nameMB018000GXLAV
Part numberP37677-001
Total capacity18 TB
Performance
Rotational speed7,200 RPM
Storage
Recording methodCMR
Cache memory512 MB
Ports & slots
Interface typeSATA 6.0Gb/s
Size & build
Form factor3.5 in (8.89 cm)

Questions about this item

What SATA host controller or backplane do I need to run this 3.5" 18 TB drive at 6.0 Gb/s?

Any standard SATA 6.0 Gb/s controller or backplane with a 3.5" bay and SATA power connector will run the drive at full speed.

Will this helium-sealed 7200 RPM CMR drive work in my older Gen8 ProLiant DL380p or ML350e alongside existing 3.5" SATA drives?

Yes — it fits the same Gen8 3.5" tray, uses the same SATA 6.0 Gb/s interface and 512e format, so it mixes with earlier SATA drives in those servers.

How can I verify the drive is delivering its rated 269 MB/s sustained transfer rate after installation?

Run a sequential read/write benchmark (for example CrystalDiskMark or fio) on the raw device; sustained throughput should approach 269 MB/s on a 6.0 Gb/s link.

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