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42D0639 ✓ Verified by PartsTable
Lenovo · STORAGE_HDD · 3.5_SATA_HDD
WHAT YOU NEED TO KNOW
SAS backplane supports SATA, not vice versa NL-SAS = SAS protocol at nearline (7.2K) speed — NOT SATA
Gen8 LFF tray ≠ Gen10 tray — different screw holes
PRODUCT OVERVIEW

The DISK DRIVE UNIT is a Lenovo 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, data_storage_capacity: 300.0 MEGABYTES, part_name_assigned_by_controlling_agency: SFF HARD DRIVE. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 7025-01-625-1346, 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
STORAGE_HDD→ 3.5_SATA_HDD→ 42D0639
NSN: 7025-01-625-1346
FSC: 7025
CAGE: 30874 — INTERNATIONAL BUSINESS MACHINES CORPORATION DBA IBM (USA)
SPECIFICATIONS
drive_size2.50
design_typeHARD DISK
unit_designINTERNAL
drive_quantity1
data_storage_capacity300.0 MEGABYTES
part_name_assigned_by_controlling_agencySFF HARD DRIVE
NSN7025-01-625-1346
COMPONENT DIAGRAM
RELEASE LATCH — NL-SAS 7.2K 42D0639 Lenovo NL-SAS INTERFACE INTERPOSER SAS drive in SATA tray? Check board compatibility 3.5" (101.6 x 146mm) LFF 3.5" DRIVE | — | NL-SAS 7.2K NL-SAS uses SAS protocol at 7.2K RPM | SAS backplane supports SATA, not reverse Tray generation matters | Gen8 LFF tray differs from Gen10 TITLE LFF 3.5" DRIVE PN 42D0639 MFR Lenovo
KEY FEATURES
•
DRIVE SIZE: 2.50
•
DATA STORAGE CAPACITY: 300.0 MEGABYTES
•
UNIT DESIGN: INTERNAL
•
DRIVE QUANTITY: 1
•
DESIGN TYPE: HARD DISK
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 (FLIS)
DRIVE SIZE2.50
DATA STORAGE CAPACITY300.0 MEGABYTES
PART NAME ASSIGNED BY CONTROLLING AGENCYSFF HARD DRIVE
UNIT DESIGNINTERNAL
DRIVE QUANTITY1
DESIGN TYPEHARD DISK
DRIVE SIZE2.50
DATA STORAGE CAPACITY300.0 MEGABYTES
PART NAME ASSIGNED BY CONTROLLING AGENCYSFF HARD DRIVE
UNIT DESIGNINTERNAL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 12
42D0637Compatible
IBM 300Gb SAS 6G 10K SFF Slim-HS HDD - Option
compatible
41Y8444Compatible
IBM 300GB SAS 6G 10k SFF Slim-HS HDD - P/n
compatible
41Y8473Compatible
IBM 300GB SAS 6G 10k SFF Slim-HS HDD - P/n
compatible
41Y8491Compatible
IBM 300GB SAS 6G 10k SFF Slim-HS HDD - P/n
compatible
42D0638Compatible
IBM 300GB SAS 6G 10k SFF Slim-HS HDD - Fru
compatible
42D0640Compatible
IBM 300GB SAS 6G 10k SFF Slim-HS HDD - P/n
compatible
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99ESD SensitiveNot HAZMAT
THIS PART SUBSTITUTES FOR 12
41Y8444SUBSTITUTE
IBM 300Gb SAS 6G 10K SFF Slim-HS HDD - SBB
IBM
41Y8473SUBSTITUTE
IBM 300Gb SAS 6G 10K SFF Slim-HS HDD - SBB
IBM
41Y8491SUBSTITUTE
IBM 300Gb SAS 6G 10K SFF Slim-HS HDD - SBB
IBM
42D0612SUBSTITUTE
IBM 300Gb SAS 6G 10K SFF Slim-HS HDD - SBB
IBM
42D0613SUBSTITUTE
IBM 300Gb SAS 6G 10K SFF Slim-HS HDD - SBB
IBM
42D0614SUBSTITUTE
IBM 300Gb SAS 6G 10K SFF Slim-HS HDD - SBB
IBM
42D0616SUBSTITUTE
IBM 300Gb SAS 6G 10K SFF Slim-HS HDD - SBB
IBM
42D0637SUBSTITUTE
IBM 300Gb SAS 6G 10K SFF Slim-HS HDD - SBB
IBM
42D0638SUBSTITUTE
IBM 300Gb SAS 6G 10K SFF Slim-HS HDD - SBB
IBM
42D0640SUBSTITUTE
IBM 300Gb SAS 6G 10K SFF Slim-HS HDD - SBB
IBM
42D0641SUBSTITUTE
IBM 300Gb SAS 6G 10K SFF Slim-HS HDD - SBB
IBM
44W2193SUBSTITUTE
IBM 300Gb SAS 6G 10K SFF Slim-HS HDD - SBB
IBM
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FREQUENTLY ASKED QUESTIONS
What is 42D0639?
42D0639 is a DISK DRIVE UNIT manufactured by Lenovo. It is classified as a STORAGE_HDD (3.5_SATA_HDD).
What parts can replace 42D0639?
There are 12 known substitutes for 42D0639: 42D0637, 41Y8444, 41Y8473 and 9 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 42D0639?
42D0639 is cataloged in the Federal Logistics Information System (FLIS) under NSN 7025-01-625-1346. This indicates validated use in U.S. government and defense supply chains.
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Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
Last verified: July 2026