Overview of the Phison 1.92TB SATA 6GBPS SSD
In the landscape of data storage, the demand for reliable, high-performance, and cost-effective solid-state drives (SSDs) remains paramount for data centers, cloud infrastructure, and enterprise storage systems. The Phison S1201K051T92P022T0400, marketed under the Pascari SA52P brand, stands as a significant offering in the 1.92TB SATA SSD category. This drive is engineered to deliver consistent performance and endurance for read-intensive and mixed-use applications, leveraging the ubiquitous SATA 6Gb/s interface for broad compatibility with existing server and storage hardware.
General Information
- Brand: Phison
- Part Number: S1201K051T92P022T0400
- Product Tyoe: Solid State Drive (SSD)
Technical Highlights
- Generous capacity of 1920GB
- Compact form factor: 2.5-inch SSD
- Interface: SATA Gen3 for reliable connectivity
- Compliance with SATA Revision 3.2
Performance Metrics
- Read speeds reaching 530 MB/s
- Write speeds up to 500 MB/s
Random Operations
- Random read capability: 98K IOPS
- Random write performance: 35K IOPS
Power Efficiency
- Active read consumption: 2.4W (typical)
- Active write usage: 2.9W (typical)
- Idle state requirement: 1.5W
Durability
- Mean Time Between Failures (MTBF): 2 million hours
- Unrecoverable Bit Error Rate (UBER): < 1 sector per 10^17 bits read
- Drive Writes Per Day (DWPD): 1
- Total Bytes Written (TBW): 3504TB
Shock Resistance
- Operational shock: 1000G, 0.5ms
- Non-operational shock: 1500G, 0.5ms
Vibration & Physical Stress
- Operational vibration: 3.08Grms (7–800Hz)
- Non-operational vibration: 20G (20–2000Hz)
- Drop tested from 80cm height
- Bending tolerance: 50N force
Compliance
- RoHS compliant for environmental safety
Data Protection
- Hardware-based power loss protection
- End-to-end data path security
Security Standards
Understanding the Phison Pascari SA52P 1.92TB SSD
The Phison S1201K051T92P022T0400, branded under the Pascari SA52P line, represents a pinnacle of SATA-based storage technology. Engineered for data centers, enterprise servers, and high-demand storage arrays, this 1.92TB SATA 6Gbps SFF (Small Form Factor) Non-SED Solid State Drive delivers a powerful combination of high capacity, consistent performance, and enterprise-grade endurance. It bridges the critical gap between legacy SATA infrastructure and modern performance requirements, offering a reliable, drop-in upgrade from traditional hard disk drives (HDDs). This category encompasses drives designed for 24/7 operation, focusing on predictable latency, sustained throughput, and unwavering reliability in multi-drive environments.
Key Specifications
Accurate identification is crucial for compatibility and procurement. This drive is defined by a specific set of identifiers and physical characteristics.
Model & Part Number Decoding
The alphanumeric string "S1201K051T92P022T0400" is Phison's internal part number, encoding key attributes. The "1.92TB" clearly denotes the formatted NAND flash capacity, providing substantial space for operating systems, applications, databases, and virtual machines. The market-facing brand name is Pascari SA52P. The "Non-SED" designation indicates this model does not include Self-Encrypting Drive hardware-based encryption features, making it suitable for environments where full-disk encryption is managed at the software or controller level.
Form Factor and Interface Details
This drive utilizes the SATA 6Gbps interface, ensuring universal compatibility with nearly every server, storage system, and workstation chassis manufactured in the last decade. The physical form factor is SFF (Small Form Factor), specifically a 2.5-inch drive with a 7mm or 9.5mm z-height, allowing dense deployment in blade servers and storage shelves. The SATA interface provides a mature, stable, and cost-effective connection path, maximizing the value of existing infrastructure investments while dramatically boosting performance over HDDs.
Connector and Power Specifications
The drive features a standard SATA data connector and a SATA power connector. It operates on a standard +5V power supply, with power consumption ratings typically detailed in the datasheet for thermal and electrical planning within enclosures.
Performance Architecture & NAND Technology
At the heart of the Pascari SA52P's performance is Phison's advanced controller and high-grade 3D NAND flash memory, architected for steady-state enterprise workloads.
Phison Controller and Firmware
The drive is built around a proprietary Phison S12 series enterprise controller. This controller is optimized for mixed read/write workloads, featuring advanced error correction code (ECC), wear-leveling algorithms, and bad block management. The firmware is tuned for data center environments, prioritizing consistent Quality of Service (QoS) and low latency over peak burst speeds. This ensures that performance remains predictable even during heavy simultaneous access, a critical factor for server applications.
3D TLC NAND Flash Memory
The S1201K051T92P022T0400 1.92TB capacity is achieved using high-density 3D Triple-Level Cell (TLC) NAND flash. 3D NAND stacks memory cells vertically, enabling greater capacities and improved endurance compared to planar NAND. While enterprise TLC (eTLC) is often optimized with stronger ECC and over-provisioning for write-intensive roles, this drive's configuration is typically aimed at read-intensive or mixed-use scenarios. The specific die lithography (e.g., 96-layer, 176-layer) impacts performance, power efficiency, and density.
Over-Provisioning and Write Amplification
A portion of the raw NAND capacity is reserved as over-provisioning (OP), which is not accessible to the user. This OP improves performance by providing spare areas for garbage collection, enhances endurance by distributing writes, and helps maintain long-term write speeds. The 1.92TB capacity point often implies a specific OP ratio tailored for its intended workload class.
Endurance and Reliability
Enterprise drives are defined by their robustness and measurable lifespan, far exceeding consumer-grade SSDs.
Mean Time Between Failures (MTBF) and AFR
The Pascari S1201K051T92P022T0400 SA52P features an exceptionally high Mean Time Between Failures (MTBF) rating, typically 2 million hours or more. This statistical measure of reliability is complemented by a low Annualized Failure Rate (AFR), often below 0.5%. These figures are derived from extended testing and demonstrate the drive's suitability for mission-critical deployments where unplanned downtime is not an option.
Uncorrectable Bit Error Rate (UBER)
The drive guarantees an extremely low Uncorrectable Bit Error Rate (UBER), such as 1 sector per 10^17 bits read. This means it is extraordinarily resilient to data corruption from internal factors, ensuring data integrity.
Workload Optimization and Use Cases
This category of SSD is not a general-purpose drive; it is engineered for specific server and storage workload patterns.
Read-Intensive and Mixed-Use Applications
The Pascari SA52P 1.92TB excels in environments dominated by read operations or a balanced mix of reads and writes. This includes: web servers, application servers, virtual desktop infrastructure (VDI) boot images, media streaming caches, and relational database servers where read queries are frequent. Its high capacity makes it ideal for storing large, active datasets that require fast access.
Hypervisor and Virtualization Storage
In virtualization hosts (VMware ESXi, Microsoft Hyper-V, KVM), this drive provides an excellent tier for hosting virtual machine disks (VMDK, VHD). The consistent low latency reduces I/O wait times for VMs, allowing for higher consolidation ratios and smoother performance. It is commonly deployed in servers configured for direct-attached storage (DAS).
Caching and Tiering Layer
In larger storage systems, these drives can serve as a high-performance caching tier or as part of an automated storage tiering pool, holding the "hot" data that is accessed most frequently, while colder data resides on higher-capacity HDDs or QLC SSDs.
Advanced Features
Beyond raw storage, enterprise SSDs incorporate features for management, health monitoring, and data protection.
Power Loss Protection (PLP)
A critical enterprise feature is full Power Loss Protection (PLP). This involves onboard capacitors that provide sufficient hold-up energy in the event of a sudden power failure. This energy allows the drive's controller to complete any in-progress writes from the volatile DRAM cache to the non-volatile NAND flash, preventing data corruption and ensuring write integrity. This is a non-negotiable feature for data center storage.
Compatibility & Deployment Considerations
Successful integration into an existing infrastructure requires attention to compatibility and environmental factors.
HBA Compatibility
The drive presents itself as a standard AHCI (Advanced Host Controller Interface) SATA device, ensuring broad compatibility with all major operating systems including Windows Server, Linux distributions (RHEL, Ubuntu, etc.), and VMware ESXi without requiring special drivers. It is compatible with standard SATA host bus adapters (HBAs) and onboard SATA ports. For large-scale deployments, it is verified for compatibility with major storage enclosure and JBOD vendors.
Power Specifications
Designed for data center operation, the drive operates within a specified ambient temperature range (e.g., 0°C to 70°C). Its vibration and shock resistance (both operational and non-operational) are rated to withstand the conditions of multi-drive servers and handling during installation or transportation.
Sequential and Random Performance Metrics
While performance can vary, a drive in this class typically delivers sequential read speeds up to 560 MB/s (saturating the SATA 6Gbps interface) and sequential write speeds potentially up to 520 MB/s. More importantly, its random 4K read/write performance (measured in IOPS - Input/Output Operations Per Second) is in the tens of thousands to low hundreds of thousands, which is the key metric for accelerating real-world server applications.
Comparative Positioning in the Storage Hierarchy
The Pascari S1201K051T92P022T0400 SA52P occupies a strategic position in the modern storage landscape, balancing cost, performance, and capacity.
Against NVMe Drives
While NVMe PCIe drives offer significantly higher bandwidth and lower latency, they require different infrastructure (PCIe slots or U.2 bays) and can be more expensive per terabyte. This SATA SSD provides a massive performance uplift from HDDs at a compelling price point, making it the optimal choice for modernizing SATA-based systems where NVMe is not feasible or necessary.
Against Other SATA SSDs
Compared to consumer SATA SSDs, the Pascari SA52P offers vastly superior endurance, power-loss protection, consistent performance under sustained loads, and a much higher TBW rating. Compared to other enterprise SATA SSDs, its value proposition lies in Phison's controller efficiency, the specific 1.92TB capacity point's density, and its optimized endurance for mixed-use workloads.
Capacity Point Rationale: 1.92TB
The 1.92TB capacity is a standard enterprise size, often resulting from the binary translation of raw NAND (e.g., 2TB raw) with a specific percentage of over-provisioning. It offers a sweet spot for many server configurations, providing substantial storage without the highest price premium of the largest capacity drives, and allowing for effective RAID configurations to achieve multi-terabyte arrays.
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