Ultrastar DC HC550 – 18TB

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Description

Feature Category Feature Specification Notes / Details
General Capacity 16 TB (16,000 GB) High capacity in a standard 3.5-inch form factor.
Recording Technology CMR (Conventional Magnetic Recording) with EAMR EAMR (Energy-Assisted Magnetic Recording) is used to achieve higher areal density while retaining the predictable performance of CMR.
Platform Technology HelioSeal® (6th Gen) Helium-filled enclosure allows for a 9-disk platform (platter stack) for maximum density and efficiency.
Performance Spindle Speed 7200 RPM Standard high speed for enterprise drives.
Data Buffer (Cache) 512 MB Large cache to improve response time and data management via Media Cache Plus architecture.
Max Sustained Transfer Rate Up to $262 \text{ MB/s}$ ($250 \text{ MiB/s}$) High sequential throughput for bulk data transfer.
Average Latency $4.16 \text{ ms}$ Time for the spindle to rotate to the data sector.
Connectivity Interface Options SATA $6 \text{ Gb/s}$ or SAS $12 \text{ Gb/s}$ Separate models available for high-performance (SAS) or cost-effective (SATA) environments.
Sector Format $512 \text{ e}$ (Emulated) / $4 \text{ Kn}$ (Native) Advanced Format options for modern host systems.
Reliability MTBF (Projected) $2.5 \text{ Million hours}$ Unsurpassed reliability rating for capacity enterprise HDDs, ideal for 24/7 operation.
Workload Rating $550 \text{ TB/year}$ Designed for heavy-duty cycle applications.
Annualized Failure Rate (AFR) $0.35\%$ Projected failure rate.
Warranty 5 Years Limited Standard enterprise warranty.
Power Idle Power (SATA Typical) $\approx 5.6 \text{ W}$ Ultra-low Watts per Terabyte (W/TB) due to HelioSeal technology.
Power Efficiency (Idle) $\approx 0.35 \text{ W/TB}$ Excellent power efficiency, reducing operational costs.

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