PartsTable
Technical Data Sheet
P17958-B21 ✓ Verified by PartsTable
· 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 the manufacturer hard disk drive designed for enterprise environments demanding consistent performance and data integrity. Key specifications include drive_size: 3.50, design_type: SOLID STATE AND HARD DISK, power_source: EXTERNAL, overall_width: 75.7 MILLIMETERS NOMINAL MM, interface_type: SERIAL ADVANCED TECHNOLOGY ATTACHMENT, overall_height: 15.6 MILLIMETERS NOMINAL MM. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 7025-01-718-4602, 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 P17958-B21
NSN: 7025-01-718-4602
FSC: 7025
CAGE: 1MVG3 — HPE GOVERNMENT, LLC (USA)
SPECIFICATIONS
drive_size3.50
design_typeSOLID STATE AND HARD DISK
power_sourceEXTERNAL
overall_width75.7 MILLIMETERS NOMINAL MM
interface_typeSERIAL ADVANCED TECHNOLOGY ATTACHMENT
overall_height15.6 MILLIMETERS NOMINAL MM
overall_length118.7 MILLIMETERS NOMINAL MM
data_storage_capacity4.0 TERABYTES
unpackaged_unit_weight0.5 KILOGRAMS KG
transfer_rate_in_megabytes_per_second600.0
part_name_assigned_by_controlling_agencySERVER HARDDISK
NSN7025-01-718-4602
COMPONENT DIAGRAM
RELEASE LATCH NL-SAS 7.2K P17958-B21 OEM 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 P17958-B21 MFR OEM
KEY FEATURES
UNPACKAGED UNIT WEIGHT: 0.5 KILOGRAMS KG
DRIVE SIZE: 3.50
POWER SOURCE: EXTERNAL
DESIGN TYPE: SOLID STATE AND 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)
UNPACKAGED UNIT WEIGHT0.5 KILOGRAMS KG
OVERALL LENGTH118.7 MILLIMETERS NOMINAL MM
DRIVE SIZE3.50
OVERALL WIDTH75.7 MILLIMETERS NOMINAL MM
POWER SOURCEEXTERNAL
DESIGN TYPESOLID STATE AND HARD DISK
OVERALL HEIGHT15.6 MILLIMETERS NOMINAL MM
PART NAME ASSIGNED BY CONTROLLING AGENCYSERVER HARDDISK
INTERFACE TYPESERIAL ADVANCED TECHNOLOGY ATTACHMENT
DATA STORAGE CAPACITY4.0 TERABYTES
VERIFIED SUBSTITUTES & CROSS-REFERENCES 12
872487-B21Compatible
HP 4Tb SAS 12G 7.2K 512n Digitally Signed MDL LFF SC HDD
compatible
872745-001Compatible
HP 4Tb SAS 12G 7.2K 512n Digitally Signed MDL LFF SC HDD
compatible
818369-007Compatible
HP 4Tb SAS 12G 7.2K 512n Digitally Signed MDL LFF HDD - Bare Drive
compatible
818369-008Compatible
HP 4Tb SAS 12G 7.2K 512n Digitally Signed MDL LFF HDD - Bare Drive
compatible
820409-002Compatible
HP 4Tb SAS 12G 7.2K 512n Digitally Signed MDL LFF HDD - Bare Drive
compatible
846523-004Compatible
HP 4Tb SAS 12G 7.2K 512n Digitally Signed MDL LFF HDD - Bare Drive
compatible
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99ESD SensitiveNot HAZMAT
THIS PART SUBSTITUTES FOR 20
C8R31ASUBSTITUTE
HP 4Tb SAS 12G 7.2K 512n Digitally Signed MDL LFF SC HDD for DX Servers
HPE
H6Z58ASUBSTITUTE
HP 4Tb SAS 12G 7.2K 512n Digitally Signed MDL LFF SC HDD for DX Servers
HPE
MB004000JWFVHSUBSTITUTE
HP 4Tb SAS 12G 7.2K 512n Digitally Signed MDL LFF SC HDD for DX Servers
HPE
MB004000JWFVPSUBSTITUTE
HP 4Tb SAS 12G 7.2K 512n Digitally Signed MDL LFF SC HDD for DX Servers
HPE
MB004000JWKGUSUBSTITUTE
HP 4Tb SAS 12G 7.2K 512n Digitally Signed MDL LFF SC HDD for DX Servers
HPE
MB004000JWWQBSUBSTITUTE
HP 4Tb SAS 12G 7.2K 512n Digitally Signed MDL LFF SC HDD for DX Servers
HPE
MB004000JWZVUSUBSTITUTE
HP 4Tb SAS 12G 7.2K 512n Digitally Signed MDL LFF SC HDD for DX Servers
HPE
MB004000JYDPBSUBSTITUTE
HP 4Tb SAS 12G 7.2K 512n Digitally Signed MDL LFF SC HDD for DX Servers
HPE
MB4000FCVCBSUBSTITUTE
HP 4Tb SAS 12G 7.2K 512n Digitally Signed MDL LFF SC HDD for DX Servers
HPE
MB4000FCWDKSUBSTITUTE
HP 4Tb SAS 12G 7.2K 512n Digitally Signed MDL LFF SC HDD for DX Servers
HPE
MB4000FCZGLSUBSTITUTE
HP 4Tb SAS 12G 7.2K 512n Digitally Signed MDL LFF SC HDD for DX Servers
HPE
MB4000JFDSNSUBSTITUTE
HP 4Tb SAS 12G 7.2K 512n Digitally Signed MDL LFF SC HDD for DX Servers
HPE
MB4000JFEMNSUBSTITUTE
HP 4Tb SAS 12G 7.2K 512n Digitally Signed MDL LFF SC HDD for DX Servers
HPE
MB4000JFEPBSUBSTITUTE
HP 4Tb SAS 12G 7.2K 512n Digitally Signed MDL LFF SC HDD for DX Servers
HPE
MB4000JVYZQSUBSTITUTE
HP 4Tb SAS 12G 7.2K 512n Digitally Signed MDL LFF SC HDD for DX Servers
HPE
P17963-B21SUBSTITUTE
HP 4Tb SAS 12G 7.2K 512n Digitally Signed MDL LFF SC HDD for DX Servers
HPE
P28495-B21SUBSTITUTE
HP 4Tb SAS 12G 7.2K 512n Digitally Signed MDL LFF SC HDD for DX Servers
HPE
P28495-K21SUBSTITUTE
HP 4Tb SAS 12G 7.2K 512n Digitally Signed MDL LFF SC HDD for DX Servers
HPE
P28499-001SUBSTITUTE
HP 4Tb SAS 12G 7.2K 512n Digitally Signed MDL LFF SC HDD for DX Servers
HPE
879480-001SUBSTITUTE
HP 4Tb SAS 12G 7.2K 512n Digitally Signed MDL LFF SC HDD for DX Servers
HPE
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FREQUENTLY ASKED QUESTIONS
What is P17958-B21?
P17958-B21 is a DISK DRIVE UNIT. It is classified as a STORAGE_HDD (3.5_SATA_HDD).
What parts can replace P17958-B21?
There are 12 known substitutes for P17958-B21: 872487-B21, 872745-001, 818369-007 and 9 more. Substitute compatibility should be verified for your specific system.
What is the NSN for P17958-B21?
P17958-B21 is cataloged in the Federal Logistics Information System (FLIS) under NSN 7025-01-718-4602. This indicates validated use in U.S. government and defense supply chains.
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