Seagate ST39103LW 9.1GB Ultra2 SCSI front view Seagate ST39103LW 9.1GB Ultra2 SCSI front view
Seagate ST39103LW 9.1GB Ultra2 SCSI front view Seagate ST39103LW 9.1GB Ultra2 SCSI front view
Seagate Cheetah 18LP top view Seagate Cheetah 18LP top view
Seagate ST39103LW angled view Seagate ST39103LW angled view
Seagate ST39103LW label view Seagate ST39103LW label view
Seagate ST39103LW 9.1GB Ultra2 SCSI front view
Seagate ST39103LW 9.1GB Ultra2 SCSI front view
Seagate Cheetah 18LP top view
Seagate ST39103LW angled view
Seagate ST39103LW label view

Seagate

Seagate ST39103LW – 9.1GB | Ultra2 SCSI 68-Pin LVD | 10K RPM | 3.5" | Legacy HDD

$225.00

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

The ST39103LW is a 9.1GB Ultra2 Wide SCSI hard drive featuring 10,000 RPM, 1MB cache, and 5.2ms average seek time in a 3.5-inch form factor. Built for late 1990s enterprise systems, this Cheetah 18LP drive was the industry's first 10,000-RPM storage solution, ideal for workstations, servers, and high-performance computing applications. Compatible with PC systems featuring Ultra2 Wide SCSI controllers and 68-pin HD D-Sub connections. The drive incorporates cutting-edge technologies like DSMR heads and PRML read channels, with embedded servo technology guaranteeing accuracy and a sealed head and disc assembly offering durability against contamination.

All products from Anand International ship brand new and factory sealed. Volume and B2B pricing available for qualified buyers.
Specifications
  • Manufacturer: Seagate
  • Model: ST39103LW
  • Capacity: 9.1GB
  • Interface: Ultra2 Wide SCSI
  • Spindle Speed: 10,000 RPM
  • Cache: 1MB
  • Form Factor: 3.5"
  • Seek Time: 5.2ms average
  • Latency: 2.99ms
  • MTBF: 1,200,000 hours
  • Drive Type: Internal Hard Drive
  • Warranty: 90 days
  • Shipping: Free domestic US shipping
  • Condition: Brand New, Factory Sealed
Product Features
  • Ultra2 Wide SCSI interface with 68-pin connector
  • 10,000 RPM spindle speed for faster data access
  • 1MB buffer cache for improved performance
  • 5.2ms average seek time
  • DSMR (Dual Stripe MR) head technology
  • PRML (Partial Response Maximum Likelihood) read channel
  • Embedded servo technology for accuracy
  • Sealed head and disc assembly protection
  • 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 PC systems, workstations, and servers equipped with Ultra2 Wide SCSI controllers and 68-pin HD D-Sub connections. Not compatible with modern SATA or IDE systems without proper SCSI controller cards.
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.

9.1GB Ultra2 SCSI 10K RPM 1MB Cache Factory Sealed

Why the ST39103LW is the right legacy drive

This Cheetah 18LP represents a breakthrough in late 1990s storage technology, being the industry's first 10,000 RPM drive. With Ultra2 Wide SCSI interface delivering 80MB/s transfer rates and 5.2ms seek times, it offered unprecedented performance for enterprise applications. The drive's DSMR heads and PRML read channels provided superior reliability and data integrity for mission-critical systems of its era.

Industry-First 10K RPM Performance

Pioneer 10,000 RPM spindle speed delivers exceptional data access performance for late 1990s systems. Significantly faster than contemporary 7200 RPM drives in high-demand applications.

Ultra2 Wide SCSI Interface

68-pin LVD connection provides 80MB/s transfer rates with support for up to 15 devices on a single bus. Superior multi-tasking performance compared to ATA interfaces of the era.

Enterprise-Grade Reliability

DSMR head technology and embedded servo system ensure accurate data positioning. Sealed head and disc assembly protects against contamination for consistent operation.

Workstation & Server Ready

Designed for continuous operation in demanding enterprise environments. Compatible with professional workstations, servers, and high-performance computing systems.

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.