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ST34520LW — Seagate Medalist Pro 4.55GB PATA internal hard drive 7200 RPM 3.5" Parallel ATA

✓ Government record, cited
Seagate · MRO · MRO_GENERAL
PRODUCT OVERVIEW

ST34520LW: Seagate Medalist Pro 4.55GB PATA internal hard drive 7200 RPM 3.5" Parallel ATA.

- Integrated SCSI controller - Single-ended and multimode single-ended/low voltage differential SCSI drivers and receivers - 8 bit and 16 bit I/O data bus models available - Asynchronous and synchronous data transfer protocol - Firmware downloadable via SCSI interface - Sector size 512 bytes/sector - Programmable drive capacity - Flawed sector reallocation at format time - Programmable auto write and read reallocation - Reallocation of defects on command (Post format) - 256-bit Reed-Solomon error correcting code - Sealed head and disc assembly - No preventative maintenance or adjustment required - Dedicated laser textured head landing zone - Embedded servo data rather than a separate servo data surface - Self diagnostics performed when power is applied to the drive - 1:1 Interleave - Zoned bit recording (ZBR) - Vertical, horizontal, or top down mounting - Dynamic spindle brake - Active IC terminators enabled by jumpers (“N” an This part is cataloged in the U.S. Government catalog under NSN 7025-01-508-3267, indicating validated use in U.S. government and defense logistics supply chains.

WHERE IT FITS
MRO→ MRO_GENERAL→ LFF BAY→ ST34520LW
NSN: 7025-01-508-3267
FSC: 7025 — Information Technology Input/output and Storage Devices
CAGE: 0Z903 — CONSOLIDATED COMPUTER SERVICES INCORPORATED DBA CONSOLIDATED COMPUTER SERVICES (USA)
SPECIFICATIONS
drive_size3.50
design_typeHARD DISK
unit_designINTERNAL
power_sourceEXTERNAL
overall_width4.000 INCHES NOMINAL IN
drive_quantity1
interface_typeSCSI
overall_height1.007 INCHES NOMINAL IN
overall_length5.754 INCHES NOMINAL IN
tracks_per_inch9570.0
special_features68 PIN I/O CABLE CONNECTION MALE, ULTRA2 SCSI WIDE
data_storage_capacity4.55 GIGABYTES
NSN7025-01-508-3267
COMPONENT DIAGRAM
RELEASE LATCH 4.55GB NL-SAS 7.2K ST34520LW Seagate NL-SAS INTERFACE INTERPOSER SAS drive in SATA tray? Check board compatibility 3.5" (101.6 x 146mm) LFF 3.5" DRIVE | 4.55GB | 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 ST34520LW MFR Seagate
KEY FEATURES
•
LFF Form Factor
•
4.55GB Capacity
•
ACCESS TIME IN MILLISECONDS: 9.5
•
TRACKS PER INCH: 9570.0
•
VOLTAGE IN VOLTS AND CURRENT TYPE: 12.0 DC
•
INTERFACE TYPE: SCSI
•
DESIGN TYPE: HARD DISK
•
TRANSFER RATE IN MEGABYTES PER SECOND: 14.0
•
POWER SOURCE: EXTERNAL
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
ACCESS TIME IN MILLISECONDS9.5
OVERALL HEIGHT1.007 INCHES NOMINAL IN
TRACKS PER INCH9570.0
VOLTAGE IN VOLTS AND CURRENT TYPE12.0 DC
INTERFACE TYPESCSI
DESIGN TYPEHARD DISK
TRANSFER RATE IN MEGABYTES PER SECOND14.0
POWER SOURCEEXTERNAL
DRIVE QUANTITY1
OVERALL LENGTH5.754 INCHES NOMINAL IN
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 1
0205008G2Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is ST34520LW?
ST34520LW is a Seagate Medalist Pro 4.55GB PATA internal hard drive 7200 RPM 3.5" Parallel ATA manufactured by Seagate. It is classified as a MRO (MRO_GENERAL).
What parts can replace ST34520LW?
There is 1 known substitute for ST34520LW: 0205008G2. Substitute compatibility should be verified for your specific system.
What is the NSN for ST34520LW?
ST34520LW is cataloged in the U.S. Government catalog under NSN 7025-01-508-3267. This indicates validated use in U.S. government and defense supply chains.
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✓ 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.