Seagate ST318436LW 18.4GB Ultra160 SCSI front view Seagate ST318436LW 18.4GB Ultra160 SCSI front view
Seagate ST318436LW 18.4GB Ultra160 SCSI front view Seagate ST318436LW 18.4GB Ultra160 SCSI front view
Seagate ST318436LW top view Seagate ST318436LW top view
Seagate ST318436LW angled view Seagate ST318436LW angled view
Seagate ST318436LW 18.4GB Ultra160 SCSI front view
Seagate ST318436LW 18.4GB Ultra160 SCSI front view
Seagate ST318436LW top view
Seagate ST318436LW angled view

Seagate

Seagate ST318436LW – 18.4GB Ultra160 SCSI | 68-Pin | 7200 RPM | 3.5" | Legacy HDD

$225.00

Brand New, Factory Sealed | In Stock | Bulk Orders Available

The ST318436LW is an 18.4GB Ultra160 SCSI hard drive featuring 7200 RPM, 2MB cache, and 5.8ms seek time in a 3.5" form factor. Built for late-1990s and early-2000s workstations and server systems, it is ideal for legacy system restoration, SCSI subsystem integration, and vintage computing applications. Compatible with Ultra160 SCSI controllers, Sun workstations, HP servers, and various industrial systems with 68-pin SCSI interfaces. This sixth-generation Barracuda family drive features GMR heads and PRML technology for reliable continuous-duty operation in enterprise environments.

All products from Anand International ship brand new and factory sealed. Volume and B2B pricing available for qualified buyers.
Specifications
  • Manufacturer: Seagate
  • Model: ST318436LW
  • Capacity: 18.4GB
  • Interface: Ultra160 SCSI
  • Spindle Speed: 7200 RPM
  • Cache: 2MB
  • Form Factor: 3.5"
  • Seek Time: 5.8ms (avg), 10.8ms (max)
  • Latency: 4.17ms
  • MTBF: 800,000 hours
  • Drive Type: Internal Hard Drive
  • Warranty: 90 days
  • Shipping: Free domestic US shipping
  • Condition: Brand New, Factory Sealed
Product Features
  • Ultra160 SCSI interface with 160MB/s transfer rate
  • Giant Magneto-Resistive (GMR) heads for enhanced reliability
  • Partial Response Maximum Likelihood (PRML) technology
  • S.M.A.R.T. monitoring support
  • Embedded servo positioning system
  • 68-pin HD D-Sub connector
  • Hot-plug capability with proper SCA configuration
  • Drive Self Test (DST) functionality
  • Direct replacement for legacy systems requiring SCSI connectivity
  • 90-day Anand International warranty on all legacy stock
  • Free domestic US shipping included
  • Volume and B2B pricing available for qualified buyers
Compatibility

Compatible with Ultra160 SCSI controllers, Sun Microsystems workstations, HP ProLiant servers, Compaq systems, IBM servers with 68-pin SCSI interfaces, and various industrial/embedded systems. Not compatible with SATA, IDE/PATA, or SAS interfaces without proper adapters.
Shipping & Returns
  • Free Shipping: We currently offer free Economy Shipping within the continental U.S. with no minimum order required. Expedited shipping is available at standard carrier rates.
  • Same-Day Shipping: Order placed before 2PM PST will ship the same day. Orders received after this time will ship the following business day.
  • Hassle-Free Returns: If you're not completely satisfied with your purchase, simply return it within 10 days for a hassle-free refund or exchange.

18.4GB Ultra160 SCSI 7200 RPM 2MB Cache Factory Sealed

Why the ST318436LW is the right legacy enterprise drive

The Barracuda 18XL represents Seagate's sixth-generation SCSI technology from the late 1990s, delivering professional-grade performance for legacy systems. With Ultra160 SCSI interface providing 160MB/s throughput and advanced GMR head technology, this drive was engineered for continuous enterprise operation. Its 800,000-hour MTBF rating and embedded servo control made it ideal for mission-critical workstations and servers of its era.

Ultra160 SCSI High-Speed Interface

Features 160MB/s transfer rate with 68-pin connector, providing optimal performance for legacy SCSI subsystems and professional workstations.

Enterprise-Grade Reliability

Built with GMR heads and 800,000-hour MTBF rating for continuous-duty operation in demanding server and workstation environments.

Advanced Technology Integration

Incorporates PRML technology and embedded servo control for precise positioning and data integrity in professional applications.

Legacy System Compatibility

Perfect for maintaining and upgrading vintage Sun, HP, IBM, and Compaq systems requiring authentic SCSI storage solutions.

New Old Stock with 90-Day Warranty

Available as brand new, factory sealed old stock units from Anand International with a 90-day warranty. Ideal for legacy system maintenance, vintage computing restoration, and hard-to-find replacement needs.

Frequently Asked Questions

Frequently asked questions for SCSI, including information on usage, configuration, and compatibility.

1. What is a SCSI hard drive?

A SCSI (Small Computer System Interface) hard drive is a legacy enterprise storage device that connects using parallel ribbon cables. SCSI was widely used in servers, workstations, and storage arrays before newer technologies like SAS and SATA became standard.
2. What systems are SCSI hard drives compatible with?

SCSI drives are designed for older servers, RAID controllers, and storage arrays that have SCSI interfaces. They are commonly used today to maintain or repair legacy IT infrastructure.
3. What’s the difference between SCSI and SAS?

SCSI uses parallel communication and bulky ribbon cables, with speeds up to 320 MB/s. SAS (Serial Attached SCSI) is the modern successor, offering serial communication, smaller connectors, dual-port redundancy, and speeds up to 24 Gb/s.
4. Can SCSI hard drives still be used in modern systems?

Most modern computers don’t have SCSI ports. To use a SCSI drive, you’ll need a compatible SCSI controller card or an external enclosure designed for parallel SCSI.
5. What capacities are available for SCSI hard drives?

SCSI hard drives were typically available in capacities ranging from a few gigabytes to several hundred gigabytes. Larger capacities are rare compared to modern SATA and SAS drives.
6. Are SCSI hard drives hot-swappable?

Yes, many SCSI drives used in enterprise servers were hot-swappable when paired with a compatible RAID backplane or enclosure. This allowed replacement without shutting down the system.
7. Why are SCSI hard drives still used today?

SCSI hard drives remain important for maintaining legacy servers, specialized equipment, and industrial systems where upgrading to newer storage technologies isn’t possible or practical.