21YT3 Dell 3.5 HDD SATA 20TB 7.2K RPM 512e 6GBPS For 14g And 15g Server
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Dell 220TB SATA 6GBPS 512e Hard Disk Drive
Upgrade your enterprise storage infrastructure with the Dell 21YT3 20TB SATA hard drive, engineered for Dell PowerEdge 14th and 15th Generation servers. Designed for high-capacity data storage, dependable performance, and seamless server integration, this 3.5-inch hot-plug HDD is ideal for business-critical workloads, cloud environments, virtualization, backup solutions, and large-scale data centers.
General Details
- Manufacturer: Dell
- Part Number: 21YT3
- Product Type: Hard Disk Drive
Technical Specifications
- Storage Capacity: 20TB
- Drive Interface: SATA 6Gbps
- Form Factor: 3.5-inch LFF
- Sector Format: Advanced Format 512e
- Spindle Speed: 7200 RPM
High-Speed Data Transfer
- Rotational Speed: 7200 RPM
- External Transfer Rate: 600MB/s
Expansion & Connectivity
- Interface Ports: 1 x SATA 6Gbps
- Drive Bays Supported: 1 x 3.5-inch Hot-Plug Bay
Compatible
- PowerEdge R240
- PowerEdge R250
- PowerEdge R340
- PowerEdge R350
- PowerEdge R440
- PowerEdge R450
- PowerEdge R540
- PowerEdge R550
- PowerEdge R640
- PowerEdge R650
- PowerEdge R650xs
- PowerEdge R6515
- PowerEdge R6525
- PowerEdge R740
- PowerEdge R740xd
- PowerEdge R740xd2
- PowerEdge R750
- PowerEdge R750xs
- PowerEdge R7515
- PowerEdge R7525
- PowerEdge T350
Dell 21YT3 20TB 7.2K RPM LSE Hot-Plug HDD Overview
The Dell 21YT3 20TB 7.2K RPM SATA LSE 6Gbps 512e 3.5-inch hot-plug hard drive is engineered for enterprise-grade storage environments that require dependable capacity, consistent performance, and seamless integration with Dell PowerEdge 14th Generation and 15th Generation server infrastructures. Designed to support data-intensive workloads across enterprise data centers, virtualization clusters, backup repositories, surveillance environments, cloud platforms, and large-scale archival systems, this Dell enterprise HDD delivers a powerful balance between storage density and operational reliability.
Organizations that continue to rely on mechanical storage solutions for large-capacity deployments benefit significantly from this 20TB enterprise hard drive because it enables massive storage expansion while maintaining compatibility with proven Dell PowerEdge architecture. The drive is optimized for enterprise workloads where sustained uptime, data integrity, and thermal efficiency are critical. With SATA 6Gbps connectivity and 512e sector formatting, the Dell 21YT3 HDD offers broad compatibility with enterprise RAID controllers and storage backplanes used throughout Dell’s 14G and 15G server ecosystems.
Enterprise Storage Capacity for Modern Data Centers
As enterprise applications continue generating increasingly larger datasets, organizations require scalable storage solutions capable of supporting long-term growth. The Dell 21YT3 20TB SATA HDD provides extensive storage capacity that allows businesses to consolidate more data into fewer physical drives. This reduces storage footprint requirements while helping improve rack efficiency and power optimization within modern data centers.
High-capacity enterprise drives such as this model are widely utilized in environments that store structured and unstructured data at scale. Businesses operating large databases, enterprise resource planning systems, digital archives, media libraries, surveillance footage repositories, and backup infrastructure can benefit from the substantial storage density delivered by a single 20TB drive.
For organizations managing private cloud deployments or hybrid infrastructure, storage scalability is essential. The Dell 21YT3 drive allows IT administrators to expand available capacity without requiring extensive hardware changes or additional rack space. By increasing usable storage within existing server infrastructure, enterprises can better manage operational costs while maintaining high levels of data availability.
Advantages of 20TB Enterprise Hard Drive Capacity
Large-capacity drives improve storage consolidation strategies by minimizing the number of physical drives needed for enterprise deployments. Fewer drives often translate into lower power consumption, simplified cable management, reduced cooling requirements, and more efficient storage administration. Data centers that prioritize density optimization frequently deploy 20TB enterprise HDDs to maximize available storage per server chassis.
Massive storage capacity also supports long-term data retention initiatives. Many industries including healthcare, finance, government, education, manufacturing, and media production must preserve large amounts of historical information for compliance and operational purposes. The Dell 21YT3 enterprise drive is well-suited for these long-retention storage environments.
7.2K RPM Performance for Enterprise Workloads
The Dell 21YT3 hard drive operates at 7,200 revolutions per minute, providing reliable performance characteristics for enterprise applications that require balanced throughput and large-scale capacity. While solid-state drives dominate ultra-low latency environments, enterprise 7.2K RPM HDDs remain indispensable for capacity-centric workloads where cost-per-terabyte and storage scalability are primary considerations.
In enterprise infrastructures, 7.2K RPM SATA drives are frequently deployed for file storage, backup repositories, media streaming, nearline storage, virtualization archives, and cloud storage tiers. This rotational speed enables stable read and write performance while maintaining energy efficiency suitable for continuous operation.
SATA 6Gbps Interface Technology
The SATA 6Gbps interface incorporated into the Dell 21YT3 HDD ensures reliable connectivity and broad enterprise compatibility. SATA remains one of the most widely adopted storage interfaces for capacity-focused enterprise environments because it offers dependable throughput, mature controller support, and cost-effective scalability.
Enterprise IT administrators appreciate SATA technology for its simplicity and flexibility across diverse deployment scenarios. The 6Gbps interface supports consistent data transfer operations while integrating seamlessly with Dell RAID controllers and storage subsystems commonly used in PowerEdge servers.
Reliable Integration with RAID Controllers
The Dell 21YT3 hard drive supports deployment in RAID arrays configured for redundancy, performance optimization, or data protection. RAID configurations remain essential in enterprise environments where uninterrupted access to mission-critical data is required.
IT teams can utilize this drive within RAID 1, RAID 5, RAID 6, RAID 10, or other enterprise storage configurations depending on workload requirements. The drive’s compatibility with Dell PowerEdge RAID controllers ensures stable operation and streamlined management within enterprise storage infrastructures.
Enhanced Data Accessibility
High-capacity SATA enterprise drives improve accessibility for archived and operational datasets. Businesses storing large quantities of digital assets can efficiently retrieve information without relying exclusively on expensive high-performance flash storage.
This approach enables organizations to implement tiered storage architectures where frequently accessed data resides on SSDs while bulk storage and archival content are maintained on high-capacity HDDs such as the Dell 21YT3.
512e Sector Format Compatibility
The Dell 21YT3 hard drive utilizes 512e advanced format technology, which combines modern storage efficiency with broad compatibility across enterprise operating systems, RAID controllers, and applications. The 512e format emulates traditional 512-byte sectors while physically using larger sector structures internally for improved reliability and storage optimization.
This compatibility approach allows organizations to modernize storage infrastructure without disrupting legacy software environments or requiring extensive system modifications. Many enterprise applications continue depending on 512-byte logical sector compatibility, making 512e drives highly practical for mixed-generation infrastructure deployments.
Improved Storage Efficiency
Advanced format technology contributes to better storage density and improved error correction capabilities. Enterprise environments handling mission-critical data benefit from enhanced data integrity mechanisms that support long-term reliability and operational stability.
The Dell 21YT3 enterprise HDD combines these advanced formatting advantages with proven Dell compatibility, making it suitable for demanding enterprise workloads where stability and scalability are equally important.
Hot-Plug Capability for Enterprise Flexibility
The 3.5-inch hot-plug design of the Dell 21YT3 hard drive enables organizations to replace or install drives without shutting down the server. Hot-swappable storage functionality is a critical feature in enterprise environments where minimizing downtime is essential.
Data centers operating around the clock require hardware components that support maintenance and scalability without interrupting production workloads. Hot-plug drives allow administrators to perform upgrades, replacements, or capacity expansion procedures while systems remain operational.
Reduced Operational Downtime
Server downtime can negatively impact productivity, customer experience, and revenue generation. The hot-plug functionality of the Dell 21YT3 drive helps organizations reduce maintenance-related interruptions by allowing storage components to be serviced dynamically.
This capability is particularly valuable in enterprise hosting environments, virtualization clusters, cloud service infrastructures, and mission-critical application platforms where continuous availability is mandatory.
Compatibility with Dell PowerEdge 14G and 15G Servers
The Dell 21YT3 enterprise HDD is specifically designed for compatibility with Dell PowerEdge 14th Generation and 15th Generation servers. This targeted compatibility ensures proper firmware integration, optimized thermal management, and reliable operational performance within supported Dell enterprise systems.
Dell PowerEdge servers are widely deployed across enterprise environments because of their scalability, security capabilities, and advanced systems management features. By using genuine Dell-compatible drives, organizations can maintain consistent hardware interoperability and ensure full support for Dell storage management tools.
PowerEdge 14G Server Integration
Dell PowerEdge 14G servers continue to serve as reliable platforms for virtualization, database hosting, enterprise applications, and cloud computing environments. The Dell 21YT3 HDD integrates seamlessly into these systems, enabling businesses to expand storage capacity while maintaining operational consistency.
Organizations utilizing PowerEdge R740, R640, R540, T640, and related 14G platforms can deploy this drive to support growing storage requirements across multiple enterprise workloads.
PowerEdge 15G Server Support
PowerEdge 15G servers provide enhanced processing performance, improved security capabilities, and expanded storage flexibility for modern enterprise infrastructures. The Dell 21YT3 drive supports these advanced platforms by delivering high-density storage suitable for evolving data demands.
Enterprises implementing PowerEdge R750, R650, T550, and other 15G systems benefit from enterprise-grade storage expansion capabilities optimized for modern workloads including virtualization, analytics, backup, and hybrid cloud deployments.
24/7 Operational Capability
Enterprise workloads frequently require nonstop storage availability. The Dell 21YT3 drive is optimized for continuous operation, supporting environments where servers must remain active at all times. Businesses relying on online applications, customer databases, cloud services, and backup infrastructure benefit from dependable storage hardware capable of sustained utilization.
Virtualization Storage Environments
Virtualized infrastructures generate significant storage demands due to multiple virtual machines, snapshots, templates, and application workloads. Enterprise administrators frequently deploy high-capacity SATA drives to support secondary virtualization storage tiers and archival repositories.
The Dell 21YT3 HDD provides the capacity necessary to support growing virtualization ecosystems while maintaining compatibility with Dell server infrastructure.
Surveillance and Video Retention
Modern surveillance systems generate enormous volumes of video data that must be retained for security, compliance, or investigative purposes. Enterprise 20TB hard drives are commonly deployed within surveillance infrastructures to support continuous recording operations.
The Dell 21YT3 HDD provides the capacity and reliability necessary for high-volume surveillance data retention environments.
Integrated Dell Systems Management
Dell PowerEdge environments benefit from advanced systems management capabilities that monitor hardware health, storage performance, and operational status. Compatible enterprise drives help maintain accurate monitoring and reporting within Dell management platforms.
This integration simplifies infrastructure administration and enables proactive maintenance strategies that improve long-term operational stability.
Scalable Storage for Future Growth
Enterprise data growth continues accelerating across virtually every industry. The Dell 21YT3 20TB hard drive provides organizations with scalable storage capacity capable of supporting expanding operational requirements over time.
Businesses implementing long-term digital transformation initiatives require storage infrastructure that can adapt to increasing data volumes without excessive complexity or infrastructure replacement costs. High-capacity enterprise HDD remain essential components within scalable hybrid storage architectures.
