PartsTable
Technical Data Sheet
Download PDF

512545-B21 — DISK DRIVE UNIT

✓ Government record, cited
HEWLETT-PACKARD COMPANY DBA HP · NIC ADAPTER
PRODUCT OVERVIEW

512545-B21: DISK DRIVE UNIT.

The DISK DRIVE UNIT is a HEWLETT-PACKARD COMPANY DBA HP hard disk drive designed for enterprise environments demanding consistent performance and data integrity. Key specifications include DRIVE SIZE: 2.50, DESIGN TYPE: HARD DISK, UNIT DESIGN: INTERNAL, OVERALL WIDTH: 7.0 INCHES NOMINAL IN, OVERALL HEIGHT: 4.63 INCHES NOMINAL IN, OVERALL LENGTH: 9.0 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 7025-01-601-3699, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
512545-B21
NSN: 7025-01-601-3699
FSC: 7025 — Information Technology Input/output and Storage Devices
CAGE: 28480 — HEWLETT-PACKARD COMPANY DBA HP (USA)
SPECIFICATIONS
DRIVE SIZE2.50
DESIGN TYPEHARD DISK
UNIT DESIGNINTERNAL
OVERALL WIDTH7.0 INCHES NOMINAL IN
DRIVE QUANTITY1
OVERALL HEIGHT4.63 INCHES NOMINAL IN
OVERALL LENGTH9.0 INCHES NOMINAL IN
SPECIAL FEATURES2.5 INCH SERIAL ATTACHED SCSI(SAS) SFF, 6G DUAL PORT HOT-PLUG; 15K HARD DISK DRIVE G
DATA STORAGE CAPACITY72.0 GIGABYTES
UNPACKAGED UNIT WEIGHT1.6 POUNDS LBS
NSN7025-01-601-3699
COMPONENT DIAGRAM
NIC CTRL PHY 0 PHY 1 ROM VRM SFP+ SFP+ LINK ACT PCIe x8 ~167 mm NETWORK ADAPTER | 2-PORT 10GbE | SFP+ | Full Height PCIe x8 | Link/Activity LEDs | PXE boot ROM TITLE NIC ADAPTER PN 512545-B21 MFR HEWLETT-PACKARD COMPANY DBA HP DISK DRIVE UNIT
KEY FEATURES
•
DESIGN TYPE: HARD DISK
•
DRIVE QUANTITY: 1
•
DRIVE SIZE: 2.50
•
UNPACKAGED UNIT WEIGHT: 1.6 POUNDS LBS
TYPICAL APPLICATIONS
  • Enterprise storage arrays and SANs
  • Direct-attached storage (DAS) expansion
  • Database tier storage (OLTP, OLAP)
  • Virtual machine datastore expansion
  • Backup-to-disk and disaster recovery targets
  • Content delivery and media streaming storage
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT4.63 INCHES NOMINAL IN
DESIGN TYPEHARD DISK
DRIVE QUANTITY1
OVERALL LENGTH9.0 INCHES NOMINAL IN
DRIVE SIZE2.50
OVERALL WIDTH7.0 INCHES NOMINAL IN
UNPACKAGED UNIT WEIGHT1.6 POUNDS LBS
SPECIAL FEATURES2.5 INCH SERIAL ATTACHED SCSI(SAS) SFF, 6G DUAL PORT HOT-PLUG; 15K HARD DISK DRIVE G
DATA STORAGE CAPACITY72.0 GIGABYTES
UNIT DESIGNINTERNAL
OTHER ITEMS IN FSC 7025 — Information Technology Input/output and Storage Devices
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
7025-00-001-2681 7025-00-001-5588 7025-00-001-6998 7025-00-001-6999 7025-00-001-7000 7025-00-001-7025 7025-00-001-7026 7025-00-001-7027
SUBSTITUTES & CROSS-REFERENCES 12
512743-001CompatiblePARTNER
HP 72GB SAS 6G 15k SFF St HDD
compatible
418373-003CompatiblePARTNER
HP 72GB SAS 6G 15k SFF St HDD
compatible
507129-007CompatiblePARTNER
HP 72GB SAS 6G 15k SFF St HDD
compatible
507129-008CompatiblePARTNER
HP 72GB SAS 6G 15k SFF St HDD
compatible
512544-001CompatiblePARTNER
HP 72GB SAS 6G 15k SFF St HDD
compatible
512544-003CompatiblePARTNER
HP 72GB SAS 6G 15k SFF St HDD
compatible
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
THIS PART SUBSTITUTES FOR 20
AD379ASUBSTITUTE
HP 72Gb SAS 6G 15K SFF ST HDD
HPE
DH0072BALWLSUBSTITUTE
HP 72Gb SAS 6G 15K SFF ST HDD
HPE
DH0072FAQRDSUBSTITUTE
HP 72Gb SAS 6G 15K SFF ST HDD
HPE
DH072BAAKNSUBSTITUTE
HP 72Gb SAS 6G 15K SFF ST HDD
HPE
DH072BB978SUBSTITUTE
HP 72Gb SAS 6G 15K SFF ST HDD
HPE
EH0072FARUASUBSTITUTE
HP 72Gb SAS 6G 15K SFF ST HDD
HPE
EH0072FARWCSUBSTITUTE
HP 72Gb SAS 6G 15K SFF ST HDD
HPE
EH0072FAWJASUBSTITUTE
HP 72Gb SAS 6G 15K SFF ST HDD
HPE
418371-B21SUBSTITUTE
HP 72Gb SAS 6G 15K SFF ST HDD
HPE
418372-B21SUBSTITUTE
HP 72Gb SAS 6G 15K SFF ST HDD
HPE
418373-003SUBSTITUTE
HP 72Gb SAS 6G 15K SFF ST HDD
HPE
418373-004SUBSTITUTE
HP 72Gb SAS 6G 15K SFF ST HDD
HPE
418398-001SUBSTITUTE
HP 72Gb SAS 6G 15K SFF ST HDD
HPE
430169-002SUBSTITUTE
HP 72Gb SAS 6G 15K SFF ST HDD
HPE
459889-002SUBSTITUTE
HP 72Gb SAS 6G 15K SFF ST HDD
HPE
490878-B21SUBSTITUTE
HP 72Gb SAS 6G 15K SFF ST HDD
HPE
504064-002SUBSTITUTE
HP 72Gb SAS 6G 15K SFF ST HDD
HPE
505609-001SUBSTITUTE
HP 72Gb SAS 6G 15K SFF ST HDD
HPE
507129-007SUBSTITUTE
HP 72Gb SAS 6G 15K SFF ST HDD
HPE
507129-008SUBSTITUTE
HP 72Gb SAS 6G 15K SFF ST HDD
HPE
Ready to buy 512545-B21?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is 512545-B21?
512545-B21 is a DISK DRIVE UNIT manufactured by HEWLETT-PACKARD COMPANY DBA HP.
What parts can replace 512545-B21?
There are 12 known substitutes for 512545-B21: 512743-001, 418373-003, 507129-007 and 9 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 512545-B21?
512545-B21 is cataloged in the U.S. Government catalog under NSN 7025-01-601-3699. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — 512545-B21

✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.