ST3300655LC Seagate Cheetah 15K.5 0.3TB Ultra 320 SCSI 16MB 3.5" Server HDD

High-Performance 3.5-inch Enterprise HDD featuring 15K Ultra320 SCSI architecture with the ST3300655LC

The ST3300655LC is a 3.5-inch internal enterprise HDD engineered for Ultra320 SCSI backplanes where deterministic latency, mature driver stacks, and predictable boot behavior are required. In legacy server and workstation platforms, the ST3300655LC supports stable OS and utility volumes by combining a 15,000 RPM spindle with a controller path optimized for tagged command queuing and sustained transactional I/O patterns.

Designed for CPU platforms and RAID controllers native to Ultra320 SCSI, the ST3300655LC integrates cleanly into established PCI/PCI-X storage topologies without introducing PCIe dependency or protocol translation layers. Its CMR recording and 16MB cache are aligned to consistent write behavior under mixed read/write workloads, while ECC, S.M.A.R.T., and Idle Read After Write (IRAW) enhance data integrity and media verification during continuous duty cycles. For environments maintaining SCSI expansion shelves or internal U320 backplanes, the ST3300655LC provides a straightforward path to preserve validated configurations and operational procedures.

Why Choose the ST3300655LC?

The ST3300655LC is selected when architectural stability outweighs interface modernization, delivering a reliable density-to-performance balance for U320 SCSI estates. The ST3300655LC supports scalable deployment through existing hot-swap bays and RAID sets, enabling consistent fleet behavior, controlled spares strategy, and minimized requalification effort across production and lab systems.

Seagate designs enterprise HDDs with an engineering focus on sustained operation, error management, and predictable service characteristics for data centre standards. With the Cheetah lineage, Seagate targets platforms that prioritize proven compatibility, rigorous validation, and long-running reliability in server and workstation duty profiles.

Key Applications:

• Legacy SCSI server boot and OS volumes
• Ultra320 SCSI RAID arrays in existing backplanes
• Transactional databases on U320 infrastructure
• Workstation and server workloads needing 15K spindle latency

At Happyware - Server Hardware you benefit from non-binding offers tailored precisely to your environment when sourcing the ST3300655LC for maintenance or expansion of Ultra320 SCSI systems, and you can extend the warranty up to 6 years to better align lifecycle planning with operational risk.