The Ultrastar 7K3000 is engineered for the highest reliability — not only put through grueling design tests during development, but also required to pass stringent ongoing reliability testing during manufacturing. With a 2.0 million hour MTBF rating, this is a drive designed to run continuously in demanding environments without compromise. It has been field-proven by top server and storage OEMs as well as large-scale internet infrastructure operators.

Performance & Interface

Running at a full 7200 RPM with a 64MB cache and SATA III 6Gb/s interface, the Ultrastar 7K3000 delivers sustained throughput well suited to high-demand nearline and capacity-optimised workloads. It features a Dual Stage Actuator (DSA) and enhanced Rotational Vibration Safeguard (RVS) for robust performance in multi-drive environments — critical for RAID arrays and dense NAS enclosures where vibration from neighbouring drives can degrade performance and longevity.

Power Efficiency & Advanced Power Management

With five Advanced Power Management modes, the drive achieves a 59% reduction in watts during low-RPM idle mode, and uses less than 1W during standby or sleep. This makes it practical not just for high-performance deployments but also for power-conscious server builds where heat and electricity costs matter.

This is an enterprise-class drive offered as legacy stock, ideal for businesses building or expanding server infrastructure, NAS arrays, or RAID storage on a budget. Its reliability credentials far exceed consumer-grade drives, making it a compelling value proposition for SMBs that need dependable storage without enterprise price tags.

Key Highlights

• 2.0 million hour MTBF — among the highest ever rated for a 7200 RPM HDD
• Dual Stage Actuator (DSA) for precise tracking in multi-drive environments
• Rotational Vibration Safeguard (RVS) for stable RAID and NAS performance
• 24/7 enterprise workload rating
• Five Advanced Power Management modes for energy efficiency
• SATA III 6Gb/s — compatible with modern server and desktop platforms
• Proven in large-scale data centre and cloud storage deployments

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The MG10ACA20TE is the highest-capacity SATA model in Toshiba’s MG10 enterprise lineup, achieving 20TB through MAMR (Microwave Assisted Magnetic Recording) technology. MAMR uses microwave energy to temporarily reduce recording medium coercivity during write operations, enabling higher platter density while preserving conventional CMR write behaviour — delivering consistent, predictable random write performance that enterprise RAID and NAS deployments depend on. At 20TB, it matches the Seagate Exos X20 ST20000NM007D on capacity while sharing the same enterprise-grade SATA accessibility.

Helium Sealed Design

The MG10ACA20TE is helium-sealed, reducing aerodynamic drag on the drive’s platters for lower operating temperatures, quieter operation, and improved power efficiency per terabyte. At 9.3W typical operating power for a 20TB drive, the watts-per-TB ratio is excellent — comparable to smaller-capacity air-filled drives of an earlier generation, and a meaningful TCO advantage in dense rack deployments.

512e Sector Format — Broad System Compatibility

The MG10ACA20TE uses 512e (512-byte emulation) sector format, presenting 512-byte logical sectors to the host while using 4,096-byte physical sectors internally. This ensures compatibility with legacy BIOS systems, older RAID controllers, and all modern OS environments without specialist configuration — making it the most broadly deployable 20TB SATA enterprise drive available.

Persistent Write Cache & Vibration Control

MG Series drives include Persistent Write Cache technology, ensuring write-cached data is not lost in the event of a power interruption — critical for RAID arrays and always-on server deployments. Rotational Vibration (RV) sensors actively compensate for vibration from neighbouring drives in dense enclosures, maintaining consistent read/write tracking accuracy regardless of how populated the array is.

Key Highlights

• 20TB — the highest capacity SATA model in the MG10 lineup
• Enterprise CMR with MAMR recording — high areal density without SMR compromises
• Helium sealed design for cool, efficient, high-density operation
• 281 MB/s sustained transfer rate
• 9.3W typical operating power — strong W/TB efficiency at 20TB
• 256MB cache for strong mixed-workload responsiveness
• 512e sector format — broadly compatible with legacy and modern systems
• SATA 6Gb/s — no SAS HBA required
• 2,500,000 hour MTTF and 0.35% AFR
• Persistent Write Cache for data integrity in power interruption events
• Rotational Vibration (RV) sensors for stable multi-drive performance
• 550TB/year workload rating — 24/7 enterprise duty cycle

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The HDEB034GEA51F sits at the very top of Toshiba’s MG Series SATA lineup. Toshiba’s FC-MAMR technology increases areal density by up to 20%, enabling higher capacity while maintaining conventional writing methods, making it suitable for enterprise storage systems up to 24TB. The helium-sealed 10-disk construction packs 24TB into the standard 3.5″ 1.0″ form factor without increasing chassis dimensions or cooling requirements — a remarkable engineering achievement that delivers direct drop-in compatibility with any existing Toshiba MG Series or competitor enterprise SATA deployment.

1 GiB Cache — A New Performance Tier

The HDEB034GEA51F features a 1 GiB (1,024MB) DRAM cache — double the 512MB of the HDEPZ13GEA51F and four times the MG07ACA series. Dynamic Cache Technology optimises cache allocation during read/write operations, improving efficiency for real-time applications. This expanded cache headroom is particularly impactful in mixed random/sequential workloads typical of enterprise NAS, object storage, and cloud data centre applications.

Advanced Data Protection Technologies

Persistent Write Cache Technology protects data during unexpected power loss by saving data in flash-based cache before writing it to the disk, while Stable Platter Technology reduces vibrations by stabilising the motor shaft to enhance tracking accuracy and read/write performance. Combined with Rotational Vibration (RV) sensors that compensate for neighbouring drive vibration in dense arrays, the HDEB034GEA51F is engineered for maximum data integrity in the most demanding multi-drive environments.

Broad Compatibility & Security Options

The 512e sector format ensures compatibility with legacy BIOS systems, older RAID controllers, and all modern OS environments without specialist configuration. Optional Self-Encrypting Drive and Sanitize Instant Erase options provide an extra layer of security, safeguarding sensitive enterprise data efficiently. The standard HDEB034GEA51F is the non-SED variant.

Key Highlights

• 24TB — the highest capacity in Toshiba’s SATA enterprise lineup
• FC-MAMR recording — up to 20% higher areal density vs conventional CMR
• Helium-sealed 10-disk design for maximum storage density
• 1 GiB (1,024MB) cache — double the HDEPZ13GEA51F for superior mixed-workload performance
• Dynamic Cache Technology for optimised real-time workload efficiency
• Persistent Write Cache — data protected against power interruption
• Stable Platter Technology for enhanced tracking accuracy
• 512e sector format — broadly compatible with legacy and modern systems
• SATA 6Gb/s — no SAS HBA required
• 2,500,000 hour MTTF and 0.35% AFR
• 550TB/year workload rating — 24/7 enterprise duty cycle
• Rotational Vibration (RV) sensors for stable multi-drive performance
• Optional SED and Sanitize Instant Erase for data security compliance

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Scalable, responsive, and innovative, the Exos X18 is designed for maximum storage capacity and the highest rack-space efficiency, tuned for large data transfers and low latency. The ST16000NM000J steps up from the X16 with 16TB capacity and enhanced caching for improved performance across mixed workloads — and like its predecessor, it connects via standard SATA 6Gb/s, requiring no SAS HBA or specialist hardware.

Helium Sealed Design With Environmental Monitoring

The helium sealed-drive design delivers lower total cost of ownership through lower power and weight, with digital environmental sensors to monitor internal drive conditions for optimal operation and performance. Helium’s lower density reduces platter drag, enabling more platters per drive and lower operating temperatures — essential engineering at 16TB capacity in a standard 3.5″ form factor.

CMR & Enterprise Performance

The Exos X18 uses CMR to deliver consistent and predictable performance across a wide range of workloads, with up to 270 MB/s sustained transfer rate and impressive random read/write performance of 170/550 IOPS. Combined with hot-plug support and PowerBalance power/performance technology, it is drop-in ready for enterprise RAID and NAS environments.

Broad Enterprise Compatibility

The Exos X18 is compatible with popular distributed file systems including Hadoop and Ceph, and with network-attached storage systems including Synology and QNAP. FastFormat technology allows field-switching between 512e and 4Kn sector formats to accommodate both legacy and modern storage platforms without replacing the drive.

Key Highlights

• 16TB enterprise CMR — helium sealed for density, efficiency, and cool operation
• SATA 6Gb/s — no SAS HBA required, compatible with standard servers and NAS
• 2,500,000 hour MTBF — industry-leading reliability rating
• 5-year limited warranty
• 550TB/year workload rating — true 24/7 enterprise duty cycle
• Up to 270 MB/s sustained transfer rate
• 170/550 IOPS random read/write performance
• Hot-plug support for live drive replacement
• Digital environmental sensors for in-situ health monitoring
• PowerBalance power/performance optimisation
• FastFormat — field-switchable between 512e and 4Kn sectors
• Compatible with Synology, QNAP, Hadoop, Ceph, and major enterprise platforms

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The MG07ACA12TA uses 4K native (4Kn) sector format — physical and logical sectors are both 4,096 bytes with no 512-byte emulation layer. This requires a modern OS (Windows 8 and later, recent Linux kernels) and a compatible HBA or RAID controller that supports 4Kn drives. Legacy BIOS systems, older Windows versions, and some older RAID controllers may not support 4Kn drives. If you require broader legacy compatibility, the MG07ACA12TE is the 512e emulation variant of the same drive.

World’s First 9-Disk Helium-Sealed Design

Using the world’s first 9-disk helium-sealed design, the MG07ACA Enterprise Capacity SATA HDD provides up to 12TB of conventional magnetic recording (CMR) and 7,200 RPM performance. Sealing helium rather than air inside the drive enclosure dramatically reduces aerodynamic drag on the spinning platters, enabling nine platters in the same standard 3.5″ 1.0″ form factor that previously accommodated far fewer — delivering 12TB without increasing chassis dimensions or cooling requirements.

Enterprise Performance & Power Efficiency

The MG07ACA12TA delivers a maximum sustained data transfer rate of 242 MiB/s typical, with active idle power of 4.25W typical and random read/write power of 7.83W typical. The 256MB cache — four times larger than the MG03ACA series — significantly improves mixed-workload handling, and the helium design’s inherent power efficiency delivers excellent watts-per-terabyte ratios for dense rack deployments.

Reliability Built for the Data Centre

The MG07ACA series carries an MTTF of 2,500,000 hours with an AFR of 0.35%, a non-recoverable error rate of 10 errors per 10^16 bits read, 600,000 load/unload cycles, and a rated annual workload of 550TB/year at 24/7 availability. This combination of metrics places it firmly in the same tier as the Seagate Exos X series — genuine hyperscale-grade reliability on standard SATA.

Broad Enterprise Application Fit

The MG Series is ideal for enterprise storage arrays and industrial server and storage systems, providing the capacity and advanced technologies to meet the special demands of data centre and cloud-scale infrastructures. It integrates directly into any standard 3.5″ SATA drive bay, requiring no SAS HBA or specialist controller beyond 4Kn sector compatibility.

Key Highlights

• 12TB enterprise CMR — helium-sealed 9-disk design
• World’s first 9-disk helium-sealed platform for maximum storage density
• 256MB cache — 4× larger than MG03ACA series
• SATA 6Gb/s — no SAS HBA required
• 2,500,000 hour MTTF and 0.35% AFR
• Non-recoverable error rate of 1 per 10^16 bits
• 550TB/year workload rating — 24/7 enterprise duty cycle
• 600,000 load/unload cycles
• 242 MiB/s sustained transfer rate
• Active idle power of just 4.25W — excellent W/TB efficiency
• 4Kn sector format — verify OS and controller compatibility

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The Exos M features breakthrough 3TB-per-platter density, enabling massive storage capacity in the same footprint for maximised AI-driven data centre efficiency. The Mozaic 3+ platform achieves this through a combination of heat-assisted magnetic recording (HAMR) technology and next-generation reader/writer head design, delivering a 50% capacity jump over the X20 in the same standard 3.5″ 1.0″ form factor. It blends 90% of trusted, proven components from previous Exos generations with Mozaic 3+ technology, ensuring deployment confidence and infrastructure compatibility for existing Exos customers.

Exceptional Power Efficiency

The Exos M reduces power consumption by up to 60% compared to 10TB drives, delivering lower operational costs and energy consumption in support of sustainability goals. It offers 3× the power efficiency per terabyte compared to typical drives — a critical TCO advantage for organisations managing dense rack deployments where power and cooling costs are significant operating expenses.

Sustainability at Scale

Built with more renewable energy and recycled materials than any previous Seagate product, the Exos M enables businesses to align with their own sustainability initiatives while reducing environmental impact. Engineered for optimal heat dissipation, it ensures reliable performance without increasing cooling requirements in the data centre — a meaningful advantage when scaling to high-density rack configurations.

Drop-In Enterprise Compatibility

The Exos M maintains the same form factor, interface, and cooling as previous Exos generations, simplifying integration into existing infrastructure and reducing upgrade complexities. The SATA 6Gb/s interface means no SAS HBA is required, hot-plug support enables live drive replacement, and the 512e sector format ensures broad compatibility across legacy and modern storage platforms.

The ST30000NM004K is the current flagship of Seagate’s enterprise HDD lineup and represents the state of the art in spinning storage technology. It is a new/current-generation drive rather than legacy pull stock — ideal for organisations building out greenfield storage infrastructure, upgrading existing Exos deployments, or pursuing maximum storage density per rack unit. The SATA interface and drop-in form factor compatibility make it immediately deployable in any system that previously ran Exos X16, X18, or X20 drives.

Key Highlights

• 30TB — the highest capacity in the Exos lineup and among the highest available anywhere
• Mozaic 3+ platform with breakthrough 3TB-per-platter areal density
• Up to 60% lower power consumption per TB vs older 10TB drives
• 3× power efficiency per terabyte vs typical enterprise drives
• 512MB cache — double the X20’s buffer for improved mixed-workload performance
• SATA 6Gb/s — no SAS HBA required, drop-in compatible with existing Exos infrastructure
• CMR recording — consistent, predictable write performance across all workloads
• Helium sealed design for cool, efficient, high-density operation
• 2,500,000 hour MTBF and 0.35% AFR
• 5-year limited warranty
• 550TB/year workload rating — true 24/7 enterprise duty cycle
• Hot-plug support for live drive replacement
• Built with more renewable energy and recycled materials than any previous Seagate product

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The MG09ACA16TE is built on Toshiba’s MAMR (Microwave Assisted Magnetic Recording) platform, which uses microwave energy to temporarily reduce the coercivity of the recording medium during write operations — enabling higher areal density without the thermal stability concerns that limit conventional PMR at extreme densities. This allows the MG09 to reach 16TB while maintaining the CMR write behaviour and predictable random write performance that enterprise RAID and NAS deployments require.

Helium Sealed Design

Like the MG07 series, the MG09ACA16TE is helium-sealed, reducing aerodynamic drag on the platters for lower operating temperatures, quieter operation, and improved power efficiency per terabyte. At 8.3W typical operating power for a 16TB drive, the watts-per-TB ratio is exceptionally competitive for dense rack deployments where power and cooling costs compound at scale.

512e Sector Format — Broad System Compatibility

The MG09ACA16TE uses 512e (512-byte emulation) sector format, presenting 512-byte logical sectors to the host while using 4,096-byte physical sectors internally. This ensures compatibility with legacy BIOS systems, older RAID controllers, and all modern OS environments without specialist configuration — the broadest possible deployment flexibility at this capacity tier.

Persistent Write Cache & Vibration Control

MG Series drives include Persistent Write Cache technology, ensuring that write-cached data is not lost in the event of a power interruption — a critical safeguard for RAID arrays and always-on server deployments. Rotational Vibration (RV) sensors actively compensate for vibration from neighbouring drives in dense enclosures, maintaining consistent read/write tracking accuracy regardless of array population.

Key Highlights

• 16TB enterprise CMR with MAMR recording — advanced areal density
• Helium sealed design for cool, efficient, high-density operation
• 281 MB/s sustained transfer rate — highest in the SATA MG Series lineup
• 256MB cache for strong mixed-workload responsiveness
• 512e sector format — broadly compatible with legacy and modern systems
• SATA 6Gb/s — no SAS HBA required
• 2,500,000 hour MTTF and 0.35% AFR
• Persistent Write Cache for data integrity in power interruption events
• Rotational Vibration (RV) sensors for stable multi-drive performance
• 550TB/year workload rating — 24/7 enterprise duty cycle
• 8.3W typical operating power — excellent W/TB efficiency

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As the flagship of the Seagate X class, the Exos X16 enterprise hard drives are the highest-capacity drives in the fleet at the time of their release, and the ST14000NM001G brings that capability to any system with a standard SATA 6Gb/s port. No SAS HBA required — this drive slots directly into desktop motherboards, consumer NAS enclosures, and server platforms alike, making it a uniquely accessible enterprise drive for SMB and prosumer deployments.

Helium Sealed Design

The helium sealed-drive design delivers a lower total cost of ownership through lower power and weight, with next-generation helium side-sealing weld technology for added handling robustness and leak protection, and digital environmental sensors to monitor internal drive conditions for optimal operation and performance. Helium’s lower density compared to air reduces drag on the spinning platters, enabling more platters per drive, lower operating temperatures, and quieter operation — all critical factors at 14TB capacity.

PowerChoice & PowerBalance Technology

The Exos X16 features PowerChoice idle power technology and PowerBalance power/performance technology, enabling intelligent power management across multiple idle states without sacrificing response time when the drive is called back into active use. Combined with SuperParity data protection, the X16 is engineered for both efficiency and data integrity across extended deployment periods.

FastFormat & Flexible Sector Support

The ST14000NM001G supports both 512e and 4Kn sector formats via Seagate’s FastFormat technology, allowing field-switching between sector sizes to accommodate both legacy and modern storage infrastructure without replacing the drive.

Advanced Security

Seagate Secure features provide safe, affordable, fast, and easy drive retirement — with optional SED and FIPS models available across the X16 lineup for deployments with data-at-rest compliance requirements.

Key Highlights

• 14TB enterprise CMR — helium sealed for density, efficiency, and quiet operation
• SATA 6Gb/s — no SAS HBA required, compatible with standard servers and NAS
• 2,500,000 hour MTBF — among the highest rated SATA drives available
• 5-year limited warranty
• 550TB/year workload rating — 24/7 enterprise duty cycle
• 261 MB/s max sustained transfer rate
• Digital environmental sensors for in-situ health monitoring
• PowerChoice and PowerBalance power management technology
• FastFormat — field-switchable between 512e and 4Kn sectors
• SuperParity data protection

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The MG03ACA Enterprise Capacity HDDs provide large capacity, 7200 RPM performance, and a 6Gb/s host interface in a robust design engineered for 24/7 operation. The MG03ACA300 steps up from the 2TB sibling with 3TB capacity and a marginally improved sustained transfer rate of 165 MiB/s at the outer edge of the platter — a natural fit for deployments where per-drive capacity needs to increase without changing platform or infrastructure.

Superior MTTF & Error Rate

The MG03ACA series carries an MTTF of 1,200,000 hours and a non-recoverable error rate of 10 errors per 10^16 bits read — a tenfold improvement in error rate compared to the MD03ACA surveillance line and vastly superior to consumer desktop drives. This makes the MG03ACA300 particularly well-suited for RAID deployments and data-critical applications where unrecoverable read errors during RAID rebuild can cause catastrophic data loss.

Rotational Vibration Technology

Rotational Vibration Technology helps optimise performance and stability in multi-drive environments. In densely populated server chassis and RAID enclosures where multiple drives spin simultaneously, vibration from neighbouring drives is a common cause of performance degradation. The MG03ACA300’s RV compensation actively counteracts this, maintaining consistent throughput in any multi-drive deployment.

Broad Enterprise Application Fit

The MG03ACA series is ideally suited for data archives and digital records storage, entry and business-critical server and storage systems, disk backup systems including remote sites for data protection and business continuity, and tiered virtual infrastructure for public and private cloud deployments. At 3TB it offers an excellent balance of capacity, rebuild time, and cost for RAID 5 and RAID 6 array builds.

Key Highlights

• Enterprise CMR — consistent, predictable performance across all workloads
• 1,200,000 hour MTTF — strong enterprise reliability rating
• Non-recoverable error rate of 1 per 10^16 bits — 10× better than surveillance line
• 165 MiB/s sustained transfer rate — marginally faster than the 2TB model
• 7200 RPM for sustained server and NAS throughput
• Rotational Vibration (RV) Technology for stable multi-drive performance
• SATA III 6Gb/s — broad server and desktop compatibility
• 24/7 rated for always-on enterprise workloads
• Ideal for RAID, NAS, server storage, and backup appliances

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The Ultrastar 7K3000 is engineered for the highest reliability — not only put through grueling design tests during development, but also required to pass stringent ongoing reliability testing during manufacturing. With a 2.0 million hour MTBF rating, this is a drive designed to run continuously in demanding environments without compromise. It has been field-proven by top server and storage OEMs as well as large-scale internet infrastructure operators.

Performance & Interface

Running at a full 7200 RPM with a 64MB cache and SATA III 6Gb/s interface, the Ultrastar 7K3000 delivers sustained throughput well suited to high-demand nearline and capacity-optimised workloads. It features a Dual Stage Actuator (DSA) and enhanced Rotational Vibration Safeguard (RVS) for robust performance in multi-drive environments — critical for RAID arrays and dense NAS enclosures where vibration from neighbouring drives can degrade performance and longevity.

Power Efficiency & Advanced Power Management

With five Advanced Power Management modes, the drive achieves a 59% reduction in watts during low-RPM idle mode, and uses less than 1W during standby or sleep. This makes it practical not just for high-performance deployments but also for power-conscious server builds where heat and electricity costs matter.

This is an enterprise-class drive offered as legacy stock, ideal for businesses building or expanding server infrastructure, NAS arrays, or RAID storage on a budget. Its reliability credentials far exceed consumer-grade drives, making it a compelling value proposition for SMBs that need dependable storage without enterprise price tags.

Key Highlights

• 2.0 million hour MTBF — among the highest ever rated for a 7200 RPM HDD
• Dual Stage Actuator (DSA) for precise tracking in multi-drive environments
• Rotational Vibration Safeguard (RVS) for stable RAID and NAS performance
• 24/7 enterprise workload rating
• Five Advanced Power Management modes for energy efficiency
• SATA III 6Gb/s — compatible with modern server and desktop platforms
• Proven in large-scale data centre and cloud storage deployments

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