Seagate ST3300655LW 300GB Ultra320 SCSI front view Seagate ST3300655LW 300GB Ultra320 SCSI front view
Seagate ST3300655LW 300GB Ultra320 SCSI front view Seagate ST3300655LW 300GB Ultra320 SCSI front view
Seagate ST3300655LW top view Seagate ST3300655LW top view
Seagate ST3300655LW angled view Seagate ST3300655LW angled view
Seagate ST3300655LW 300GB Ultra320 SCSI front view
Seagate ST3300655LW 300GB Ultra320 SCSI front view
Seagate ST3300655LW top view
Seagate ST3300655LW angled view

Seagate

Seagate ST3300655LW – 300GB Ultra320 SCSI 68-Pin | 15,000 RPM | 3.5" | Enterprise HDD

$399.95

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

The ST3300655LW is a 300GB Ultra320 SCSI hard drive featuring 15,000 RPM, 16MB cache, and 3.5ms seek time in a 3.5" form factor. Built for enterprise disc drive storage systems, it is ideal for high-performance servers, workstations, and legacy enterprise applications. Compatible with SCSI Ultra 320 controllers with LVD SCSI signaling for greater speed over cables. Engineered for continuous operation with 1,400,000 hours MTBF when operated within specified temperature ranges.

All products from Anand International ship brand new and factory sealed. Volume and B2B pricing available for qualified buyers.
Specifications
  • Manufacturer: Seagate
  • Model: ST3300655LW
  • Capacity: 300GB
  • Interface: Ultra320 SCSI 68-Pin LVD
  • Spindle Speed: 15,000 RPM
  • Cache: 16MB
  • Form Factor: 3.5"
  • Seek Time: 3.5ms average
  • Latency: 2.0ms average rotational
  • MTBF: 1,400,000 hours
  • Drive Type: Enterprise HDD
  • Warranty: 90 days
  • Shipping: Free domestic US shipping
  • Condition: Brand New, Factory Sealed
Product Features
  • Ultra320 SCSI LVD interface with 320MB/s transfer rate
  • 15,000 RPM spindle speed for maximum performance
  • 16MB read/write cache buffer
  • 3.5ms average seek time for fast data access
  • Low voltage differential signaling
  • Hot-swap capable design
  • S.M.A.R.T. monitoring technology
  • Enterprise-grade reliability and durability
  • 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 Ultra320 SCSI controllers, enterprise servers, workstations, and legacy systems supporting 68-pin SCSI connections. Not compatible with SATA, IDE, or SAS interfaces.
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.

300GB Ultra320 SCSI 15K RPM 3.5ms Seek Factory Sealed

Why the ST3300655LW is the right Enterprise HDD

The Cheetah 15K.5 drive is designed and manufactured by the same teams that successfully delivered the past four award-winning generations. This fifth-generation Cheetah represents the peak of SCSI performance technology with 15,000 RPM operation and Ultra320 interface. Built for mission-critical enterprise environments, it delivers exceptional seek performance and sustained throughput for demanding server applications.

Maximum SCSI Performance

Ultra320 SCSI interface delivers 320MB/s external transfer rates for exceptional throughput in enterprise storage systems.

15K RPM Enterprise Speed

15K RPM spindle speed provides the fastest data access available in 3.5" SCSI drives for mission-critical applications.

Low Latency Access

3.5ms random seek time and 0.2ms track-to-track seek ensures rapid response for enterprise workloads and database applications.

Enterprise Reliability

1,400,000 hours MTBF with 0.62% AFR when operated within specified temperature ranges for maximum uptime in critical 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.