Product Information

• Product Name: Dahua 512GB NVMe M.2 PCIe SSD
• Model Series: Various (DH-XXX series, specific model varies by production batch)
• Brand: Dahua Technology Co., Ltd.
• Category: NVMe Solid State Drive
• Release Year: 2020-2022 (various production periods)
• Form Factor: M.2 2280 (M-key, PCIe interface only, not SATA compatible)
• Dimensions: 22mm width × 80mm length × 2.2mm thickness (single-sided design)
• Weight: Approximately 8-12 grams
• PCB Color: Green with black/white information label

Performance Specifications

• Sequential Performance (Maximum):
  • Read: Up to 2,400 MB/s
  • Write: Up to 1,800 MB/s
• Sequential Performance (Sustained):
  • Read: 1,800-2,200 MB/s (typical real-world performance)
  • Write: 1,200-1,600 MB/s (after SLC cache exhaustion)
• Random Performance (4KB):
  • Random Read: 150,000-180,000 IOPS (QD32)
  • Random Write: 180,000-200,000 IOPS (QD32)
• Access Time: <0.1ms (typical NVMe SSD latency)
• Queue Depth: Supports up to 64K commands
• SLC Cache Size: Dynamic allocation, approximately 40-80GB depending on drive usage and free space
• Cache Performance: Write speeds maintained at maximum within cache, then reduced to native TLC speeds

Controller & Architecture

• Controller Model: Realtek RTS5763DL or Maxio MAP1202 (or similar entry-to-mid-range NVMe controller)
• Controller Type: 4-channel NVMe controller optimized for TLC NAND
• Processor: 32-bit/64-bit RISC-based processor
• Host Interface: PCIe 3.0 x4 to NVMe bridge with advanced power management
• Error Correction: LDPC (Low-Density Parity Check) ECC engine with strong error correction capability
• Wear Leveling: Dynamic and static wear leveling algorithms for extended lifespan
• Bad Block Management: Automatic bad block detection and remapping
• Garbage Collection: Advanced background garbage collection with TRIM support
• RAID Engine: Integrated RAID engine within controller for data protection

NAND Flash Memory

• NAND Type: 3D TLC (Triple-Level Cell) NAND Flash
• 3D Layers: 64-layer or 96-layer 3D NAND technology (depending on manufacturing date)
• Manufacturer: YMTC (Yangtze Memory Technologies Corp) or other Chinese NAND manufacturers
• Memory Density: 512Gb (64GB) per die, typically 8 dies for 512GB capacity
• Page Size: 16KB typical page size
• Block Size: 4MB typical block size
• Plane Configuration: 2 planes per die for improved parallelism
• P/E Cycles: 1,000-1,500 Program/Erase cycles per cell (typical for consumer TLC NAND)

Memory Configuration & Cache

• DRAM Configuration: DRAM-less design (no physical DRAM on board)
• HMB (Host Memory Buffer): Utilizes system RAM as FTL (Flash Translation Layer) cache
• HMB Allocation: Typically 64MB allocated from system memory (managed by NVMe driver)
• SLC Cache: Dynamic SLC caching technology (portion of TLC NAND operates as SLC for performance)
• Cache Strategy: Adaptive caching based on workload and available free space
• Performance Impact: HMB reduces performance penalty of DRAM-less design compared to traditional DRAM-less SSDs

Endurance & Reliability

• TBW (Total Bytes Written): 300 Terabytes (300,000 GB written)
• DWPD (Drive Writes Per Day): 0.16 DWPD (based on 5 years at 512GB per day)
• MTBF (Mean Time Between Failures): 1,500,000 hours
• UBER (Unrecoverable Bit Error Rate): <1 sector per 10^17 bits read
• Data Retention:
  • 1 year at 30°C after endurance specification is reached
  • 3 months at 40°C after endurance specification is reached
• Power Loss Protection: Basic capacitor array for data protection during sudden power loss (if present)
• SMART Support: Complete SMART attribute monitoring with predictive failure analysis

Power Consumption

• Active Power (Read/Write): 3.0-4.0W (maximum during heavy operations)
• Average Active Power: 2.5-3.0W (typical during mixed workloads)
• Idle Power: 30-50mW (device idle with background operations)
• Slumber Power: 10-20mW (low-power state)
• DevSleep Power: 5-10mW (deep sleep state)
• Operating Voltage: 3.3V ±5% DC
• Peak Current: 1.2A maximum (during initialization and heavy writes)
• Power States: Supports NVMe power states PS0 through PS4
• Power Management: APST (Autonomous Power State Transition) for automatic power saving

Environmental Specifications

• Operating Temperature: 0°C to 70°C (32°F to 158°F)
• Storage Temperature: -40°C to 85°C (-40°F to 185°F)
• Operating Humidity: 5% to 95% relative humidity (non-condensing)
• Storage Humidity: 5% to 95% relative humidity (non-condensing)
• Operating Altitude: Up to 10,000 feet (3,048 meters)
• Shock Resistance:
  • Operating: 1500G, 0.5ms half-sine wave
  • Non-operating: 1500G, 0.5ms half-sine wave
• Vibration Resistance:
  • Operating: 20-2000Hz, 20G
  • Non-operating: 20-2000Hz, 20G

Compatibility & System Requirements

• M.2 Interface: Requires M.2 M-key socket (PCIe NVMe compatible, not SATA M.2)
• Operating System Support:
  • Windows 10/11 (native NVMe driver support)
  • Linux (kernel 3.3+ with NVMe modules)
  • macOS (on compatible Mac systems with M.2 PCIe slots)
  • Chrome OS (on compatible Chromebooks)
• BIOS/UEFI Requirements: UEFI firmware with NVMe boot support for use as boot drive
• System Compatibility:
  • Desktop motherboards with M.2 PCIe Gen 3.0 slots
  • Laptops with M.2 PCIe NVMe slots
  • Mini PCs and NUC devices
  • PlayStation 5 (with heatsink for compliance with PS5 requirements)
  • Xbox Series X/S expansion (with appropriate enclosure)

Features & Technologies

• NVMe Protocol Features:
  • Multi-queue support (up to 64K I/O queues)
  • MSI-X (Message Signaled Interrupts eXtended) for reduced CPU overhead
  • Scalable I/O performance with parallel processing
  • Low latency command processing
• Data Protection Features:
  • End-to-end data path protection
  • LDPC error correction with strong correction capability
  • CRC (Cyclic Redundancy Check) for data integrity
  • RAID-like protection within NAND array
• Performance Optimization:
  • Dynamic thermal throttling to prevent overheating
  • Intelligent SLC caching algorithm
  • Advanced garbage collection with idle-time optimization
  • TRIM command support for maintaining performance
• Security Features (if supported):
  • AES 256-bit hardware encryption (may vary by model)
  • TCG Opal 2.0 compliance for self-encrypting drive functionality
  • Secure Erase support for data sanitization

Warranty & Support

• Warranty Period: 3 years from date of purchase
• Warranty Coverage: Defects in materials and workmanship under normal use
• Warranty Exclusions: Physical damage, misuse, water damage, data loss
• Support Type: RMA (Return Merchandise Authorization) service through distributor or retailer
• Technical Support: Available through Dahua's support channels or authorized distributors
• Firmware Updates: Available from manufacturer website (if provided)

Package Contents

• Dahua 512GB NVMe M.2 PCIe SSD
• Mounting screw (typically included, but may vary by retailer)
• Limited documentation/warranty information
• Anti-static packaging
• Note: No cloning software or migration tools included

Installation Guidelines

• Physical Installation:
  • Insert SSD into M.2 slot at 30-degree angle
  • Press down gently until seated properly
  • Secure with provided mounting screw
  • Ensure proper key alignment (M-key matches M.2 slot)
• Software Setup:
  • Initialize drive in Disk Management (Windows) or Disk Utility (macOS)
  • Format with appropriate file system (NTFS for Windows, APFS/HFS+ for macOS, ext4 for Linux)
  • Enable TRIM for optimal long-term performance
• Boot Drive Configuration:
  • Enable NVMe boot support in BIOS/UEFI settings
  • Set as primary boot device if installing OS
  • Install appropriate NVMe drivers if required by older operating systems

Performance Comparison

• Compared to SATA III SSD: 4-5x faster sequential read/write speeds
• Compared to 2.5" HDD: 20-25x faster access times, 8-10x faster sequential transfers
• Compared to PCIe 4.0 NVMe SSD: Approximately 50-60% of sequential speed, similar random performance for many workloads
• Real-World Performance:
  • Windows 10/11 boot time: 8-12 seconds
  • Application loading: 2-4x faster than SATA SSDs for large applications
  • Game level loading: 30-50% faster than SATA SSDs
  • File transfers: Excellent for files under 40GB (within SLC cache), moderate for larger files

Use Case Recommendations

• Ideal Applications:
  • Primary boot drive for Windows, Linux, or macOS systems
  • Gaming drive for faster game loading and level transitions
  • Content creation scratch disk for photo editing and light video work
  • Office productivity systems requiring fast application loading
  • Secondary storage in high-performance workstations
  • PS5 storage expansion (with appropriate heatsink)
• Less Suitable For:
  • High-end video editing with 4K/8K raw footage (due to sustained write limitations)
  • Database servers with heavy random write workloads
  • Write-intensive server applications requiring high endurance
  • Extreme overclocking systems without proper cooling
• Capacity Considerations: 512GB provides room for OS, applications, and moderate game/library storage

Manufacturer Information

• Company: Dahua Technology Co., Ltd.
• Headquarters: Hangzhou, Zhejiang, China
• Founded: 2001
• Primary Business: Video surveillance products and solutions
• Storage Division: Diversified into SSD manufacturing as complementary business
• Quality Standards: ISO 9001 quality management system certified
• Market Position: Value-oriented storage solutions in competitive market

Important Considerations

• Actual Usable Capacity: Approximately 476GB after formatting and over-provisioning
• Performance Consistency: Write speeds may drop to 400-600 MB/s after SLC cache is exhausted during large file transfers
• Thermal Management: May benefit from motherboard heatsink or aftermarket thermal solution during sustained workloads
• Endurance Planning: 300 TBW equals approximately 164GB written per day for 5 years; suitable for most consumer workloads
• Compatibility Verification: Confirm M.2 slot supports PCIe NVMe (not just SATA) before purchase
• Backup Strategy: Implement regular backups as with any storage device; SSDs can fail suddenly
• Firmware Updates: Check for firmware updates periodically for performance improvements and bug fixes
• Value Assessment: Offers good performance per dollar for budget to mid-range systems requiring NVMe speeds