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861748-B21 — Storage Datasheet

HPE · DRIVE LFF
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

HP 861748B21 internal hard drive 4 TB 7200 RPM 3.5" SAS. The unit ships in a LFF form factor suitable for standard rack-mount installations. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
LFF BAY→ 861748-B21
SPECIFICATIONS
Part Number861748-B21
ManufacturerHPE
Form FactorLFF
Capacity4TB
BROWSE HPE MACHINES
ProLiant DL360 Gen10 ProLiant DL380 Gen10 ProLiant BL460c Gen10 ProLiant DL380 Gen9 ProLiant DL360 Gen9 3PAR StoreServ 8450 ProLiant BL685c G7 3PAR StoreServ 8400 3PAR StoreServ 8440 3PAR StoreServ 8200 MSA 2052 SAN Storage ProLiant BL460c Gen9
All HPE machines and parts
COMPONENT DIAGRAM
RELEASE LATCH 4TB NL-SAS 7.2K 861748-B21 HPE NL-SAS INTERFACE INTERPOSER SAS drive in SATA tray? Check board compatibility 3.5" (101.6 x 146mm) LFF 3.5" DRIVE | 4TB | 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 861748-B21 MFR HPE
KEY FEATURES
•
LFF Form Factor
•
4TB Capacity
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
SUBSTITUTES & CROSS-REFERENCES 10
862137-001CompatiblePARTNER
HP 4Tb SAS 12G 7.2K 512e Digitally Signed MDL LFF LP HDD
compatible
867269-B21CompatiblePARTNER
HP 4Tb SAS 12G 7.2K 512e Digitally Signed MDL LFF LP HDD FIO
compatible
791150-001CompatiblePARTNER
HP 4Tb SAS 12G 7.2K 512e Performance MDL LFF HDD - Bare Drive
compatible
793674-002CompatiblePARTNER
HP 4Tb SAS 12G 7.2K 512e Performance MDL LFF HDD - Bare Drive
compatible
793677-001CompatiblePARTNER
HP 4Tb SAS 12G 7.2K 512e Performance MDL LFF SC HDD
compatible
803634-001CompatiblePARTNER
HP 4Tb SAS 12G 7.2K 512e Performance MDL LFF HDD - Bare Drive
compatible
LIFECYCLE

No lifecycle data available.

THIS PART SUBSTITUTES FOR 2
862137-001SUBSTITUTE
HP 4Tb SAS 12G 7.2K 512e Digitally Signed MDL LFF LP HDD
HPE
867269-B21SUBSTITUTE
HP 4Tb SAS 12G 7.2K 512e Digitally Signed MDL LFF LP HDD
HPE
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FREQUENTLY ASKED QUESTIONS
What is 861748-B21?
861748-B21 is a HP 861748B21 internal hard drive 4 TB 7200 RPM 3.5" SAS manufactured by HPE.
What parts can replace 861748-B21?
There are 10 known substitutes for 861748-B21: 862137-001, 867269-B21, 791150-001 and 7 more. Substitute compatibility should be verified for your specific system.
Is 861748-B21 still available?
861748-B21 is currently Unknown.
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PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.