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Technical Data Sheet
PartsTable / STORAGE_HDD / 747991-001
747991-001 ✓ Verified by PartsTable
DELL · 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

Do you need more performance from your HP?<br><br>HP hard drive deliver exceptional performance and endurance.<br><br>HP hard drives are designed for reliability and mass storage demanded by today's server and storage environments. 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→ 747991-001
SPECIFICATIONS
TypeHDD
HDD size3.5"
HDD speed7200 RPM
InterfaceSerial ATA
HDD capacity500 GB
Operating voltage5 / 12 V
COMPONENT DIAGRAM
RELEASE LATCH 500GB NL-SAS 7.2K 747991-001 DELL NL-SAS INTERFACE INTERPOSER SAS drive in SATA tray? Check board compatibility 3.5" (101.6 x 146mm) LFF 3.5" DRIVE | 500GB | 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 747991-001 MFR DELL
KEY FEATURES
•
500GB 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
VERIFIED SUBSTITUTES & CROSS-REFERENCES

No verified substitutes available.

LIFECYCLE
StatusUNKNOWN
Availability—
RoHS CompliantEAR99ESD SensitiveNot HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 747991-001?
747991-001 is a 500GB SATA II HDD manufactured by DELL. It is classified as a STORAGE_HDD (3.5_SATA_HDD).
Is 747991-001 still available?
747991-001 is currently Unknown.
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Last verified: July 2026