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872475-B21: HPE 300GB SAS 12G Enterprise 10K SFF SC Digitally Signed Firmware HDD

HPE 872475-B21 Hard drive300 GBSAS 12Gb/s10K rpmSFF 2.5in
HPEHard drivesSAS 12Gb/s

Also listed as: 872735-001, 872474-001, ST300MM0009, EG000300JWSNP · made by Seagate

The HPE 872475-B21 is a 300GB 10,000 RPM 2.5-inch SFF SAS 12Gb/s enterprise hard drive housed in an HPE SmartCarrier (SC). Operating with dual-port SAS connectivity and digitally signed firmware, it was the baseline storage drive deployed across millions of HPE ProLiant Gen8, Gen9, and Gen10 servers for operating system installation and boot arrays. Secondary market buyers should verify SmartCarrier mechanical latches and check SMART health logs.

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Specifications

Part number872475-B21
BrandHPE
Made bySeagate
TypeHard drives
Other numbers872735-001, 872474-001, ST300MM0009, EG000300JWSNP
Statusend of sale
Capacity (GB)300
InterfaceSAS 12Gb/s
Form factorSFF 2.5in
Speed10K rpm
CarrierSmartCarrier (SC)
Carrier typeSC
Vendor modelST300MM0009
Generation fitGen8 / Gen9 / Gen10

About the 872475-B21

The HPE 872475-B21 served as the entry-capacity tier in HPE's 10,000 RPM 2.5-inch Small Form Factor enterprise drive lineup. Delivering 300GB of storage on a 12Gb/s SAS interface, it balanced fast access times and moderate power consumption with enterprise-grade component reliability. It was historically deployed in RAID 1 pairs to support host hypervisor or OS installations across general-purpose enterprise infrastructure.

Compatibility

Compatible with standard 2.5-inch hot-plug drive slots across HPE ProLiant Gen8, Gen9, and Gen10 platforms (including DL380, DL360, DL560, and ML350) equipped with SmartCarrier backplanes. It does not fit directly into Gen10 Plus or Gen11 servers using Basic Carrier (BC) trays unless the drive is transferred into a BC frame. Requires a 12G SAS RAID controller or HBA.

How to identify a genuine unit

Genuine drives feature an HPE label marked with Option Part Number 872475-B21, Spare Part Number 872735-001, and Assembly Part Number EG000300JWSNP. The drive mechanism inside is a Seagate Enterprise Performance 10K drive (ST300MM0009). HPE iLO and Smart Storage Administrator recognize the unit with authentic HPE digitally signed firmware revisions.

Buying used

When evaluating second-hand 872475-B21 drives, check that the drive spins up quietly without head-cycling clicks. Inspect the drive's SMART attributes for Reallocated Sector Count, Reported Uncorrectable Errors, and overall Power-On Hours. Confirm that the SmartCarrier caddy ejector mechanism is unbroken and that the drive status LED diffuser lights up blue upon activation.

Reference prices (last 14 days, updated 2026-10-27)

Refurbished: USD 42 (1 sighting, Oct 2026)

Used: USD 24 (1 sighting, Oct 2026)

All sightings
SellerConditionPriceNoteSeen
serversupply.comrefurbishedUSD 42Refurbished drive tested clean SMART2026-10-27
ebay.comusedUSD 24Clean working pull, tested 100% health2026-10-27

Prices seen on public listings on the dates shown, before tax and shipping. Not an offer.

Fits these models

Check compatibility with HPE

Before you buy, confirm the exact configuration against the vendor's own lists: firmware levels, operating systems, adapters and optics that HPE has tested with the HPE 872475-B21.

Equivalent part numbers

FAQ

What is the rotational speed of 872475-B21?

It spins at 10,000 RPM, offering a middle ground in latency between 7,200 RPM bulk drives and 15,000 RPM high-speed spindles.

Can 872475-B21 be used with Gen10 servers?

Yes, it is fully certified for standard ProLiant Gen10 servers with 2.5-inch SmartCarrier backplanes.

Buying or selling 872475-B21?

New, refurbished or used. Tell us the quantity and condition and we connect you with a vetted reseller in your region, usually within one working day.

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