ST3300655SS Seagate Cheetah 15K.5 0.3TB SAS 16 MB 3.5" Server HDD

High-Performance 3.5in Enterprise SAS HDD for low-latency tiered storage with the ST3300655SS

The ST3300655SS is a 3.5in internal enterprise HDD engineered for SAS backplanes in rack servers and storage arrays where predictable transactional I/O matters. As a 15,000 RPM Seagate Cheetah 15K.5 drive, it targets boot volumes, hot-spare pools, and tiered storage layers that prioritize consistent seek behavior and low queue-time variance over bulk capacity.

In modern CPU-dense platforms where memory footprints and PCIe-attached acceleration can shift I/O pressure to shared storage, the ST3300655SS supports stable SAS connectivity and multi-drive aggregation through the controller, enabling balanced scaling without changing the host PCIe topology. Its CMR recording profile and enterprise firmware characteristics are aligned to 24x7 duty cycles, helping maintain deterministic behavior under mixed read/write patterns common in databases, virtualization control planes, and array metadata services.

Why Choose the ST3300655SS?

The ST3300655SS delivers a practical density-to-performance ratio for legacy and current SAS infrastructures that need fast rotational media for specific roles. It is well suited for standardized drive bay designs, supports straightforward lifecycle spares management, and integrates cleanly into RAID or mirrored boot architectures where enterprise reliability and service continuity drive the design. The ST3300655SS also simplifies capacity planning in tiered deployments by keeping high-IOPS media dedicated to the workloads that benefit most.

Seagate designs the Cheetah enterprise HDD line with an emphasis on sustained datacentre operation, consistent firmware behavior, and compatibility with common SAS storage standards. This engineering approach helps the ST3300655SS fit into controlled-change environments where qualification, repeatable performance, and predictable maintenance windows are required.

Key Applications:

• Transactional database log and index tiers
• Server or array boot volumes
• Hot-spare and rapid rebuild pools
• Tiered enterprise storage in SAS arrays
• Virtualization infrastructure services

At Happyware - Server Hardware you benefit from non-binding offers tailored to your deployment plan for the ST3300655SS and from an extended warranty of up to 6 years to support long lifecycle operation in production environments.