Product Information

• Product Name: Dahua 128GB NVMe M.2 PCIe SSD
• Model: Various (DH-XXX series, specific model varies by batch)
• Brand: Dahua (Dahua Technology)
• Series: Dahua SSD Storage Series
• Category: Solid State Drive (NVMe PCIe)
• Form Factor: M.2 2280 (M-key)
• Dimensions: 22mm x 80mm x 2.2mm (single-sided typically)
• Weight: Approximately 7-10 grams
• Color: Green PCB with black/white label
• Country of Origin: China (Dahua is a Chinese technology company)

Capacity & Interface

• Total Capacity: 128GB (128,000,000,000 bytes)
• Usable Capacity: Approximately 119GB (due to binary conversion and over-provisioning)
• Over-provisioning: 7-8% typical (for wear leveling and performance maintenance)
• Interface: PCI Express 3.0 x4
• Protocol: NVMe 1.3 or 1.4 (Non-Volatile Memory Express)
• Bus: PCIe 3.0 x4 lane configuration
• Maximum Bandwidth: Up to 4GB/s theoretical (PCIe 3.0 x4)
• Compatibility: Compatible with PCIe 3.0 and PCIe 4.0 systems (backward compatible)

Performance Specifications

• Sequential Read Speed: Up to 1,500-2,000 MB/s (maximum, under ideal conditions)
• Sequential Write Speed: Up to 800-1,200 MB/s (maximum, under ideal conditions)
• Random Read IOPS: 70,000-120,000 IOPS (4KB random read)
• Random Write IOPS: 80,000-150,000 IOPS (4KB random write)
• Access Time: <0.1ms (typical for NVMe SSDs)
• Queue Depth: Supports up to 64K commands
• Performance Notes:
  • Performance may vary based on system configuration and workload
  • SLC caching used to boost write performance for small transfers
  • Sustained writes may slow down after cache is exhausted

Controller & Architecture

• Controller: Realtek RTS5763DL, Maxio MAP1202, or similar entry-level NVMe controller
• Controller Architecture: 32-bit or 64-bit RISC processor
• Host Interface: PCIe 3.0 x4 to NVMe bridge
• Flash Channels: 2-4 channels (typical for 128GB capacity)
• Error Correction: LDPC (Low-Density Parity Check) error correction
• Wear Leveling: Dynamic and static wear leveling algorithms
• Bad Block Management: Automatic bad block remapping
• Garbage Collection: Background garbage collection (idle time)

NAND Flash Memory

• NAND Type: 3D TLC (Triple-Level Cell) NAND Flash
• Layers: 64-layer or 96-layer 3D NAND (depending on manufacturing date)
• Manufacturer: YMTC (Yangtze Memory Technologies Corp) or other Chinese NAND manufacturers
• Page Size: 16KB typical
• Block Size: 4MB typical
• Plane Configuration: 2 planes per die
• Endurance: 300-500 P/E cycles (Program/Erase cycles) per cell

DRAM & Cache Configuration

• DRAM Configuration: DRAM-less design (HMB - Host Memory Buffer) or small DRAM cache
• HMB Support: Uses system RAM as cache (NVMe 1.3+ feature)
• HMB Size: Typically 64MB allocated from system memory
• SLC Cache: Dynamic SLC caching (portion of TLC acts as SLC for performance)
• Cache Size: Approximately 12-24GB SLC cache (dynamic allocation)
• Cache Performance: Write speeds maintained within cache size, then drop to native TLC speed

Endurance & Reliability

• TBW (Terabytes Written): 80-100 TBW (Total Bytes Written)
• DWPD (Drive Writes Per Day): 0.18-0.22 DWPD (based on 5-year warranty)
• 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 is reached)
• Power Loss Protection: Basic capacitor protection (if any)
• SMART Support: Full SMART (Self-Monitoring, Analysis and Reporting Technology) support

Power Consumption

• Active Power: 2.5-3.5W (during read/write operations)
• Idle Power: 30-50mW (slumber state)
• Sleep Power: 5-10mW (deep sleep state)
• Voltage: 3.3V ±5%
• Current: 900mA max (during peak operation)
• Power States: Supports NVMe power states (PS0-PS4)
• Power Management: APST (Autonomous Power State Transition) supported

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% RH (non-condensing)
• Storage Humidity: 5% to 95% RH (non-condensing)
• Altitude: Up to 10,000 feet (3,048 meters)
• Shock Resistance: 1500G/0.5ms (operating), 1500G/0.5ms (non-operating)
• Vibration Resistance: 20-2000Hz, 20G (operating), 20-2000Hz, 20G (non-operating)

Compatibility & System Requirements

• M.2 Interface: M-key (PCIe x4) socket required
• Operating Systems:
  • Windows 10/11 (requires NVMe driver, included in Windows 10 1607+ and Windows 11)
  • Linux (kernel 3.3+ with NVMe support)
  • macOS (with compatible Mac systems)
  • Chrome OS
• BIOS/UEFI Requirements: UEFI with NVMe boot support for boot drive use
• System Types:
  • Desktop PCs with M.2 PCIe slots
  • Laptops with M.2 PCIe slots
  • Mini PCs and NUC devices
  • Gaming consoles with M.2 expansion (some models)

Features & Technologies

• NVMe Features:
  • Multi-queue support (up to 64K queues)
  • MSI-X (Message Signaled Interrupts eXtended)
  • Scalable I/O performance
  • Low latency protocol
• Data Protection:
  • ECC (Error Correction Code) with LDPC
  • End-to-end data path protection
  • RAID engine within controller
• Performance Features:
  • SLC caching technology
  • Dynamic thermal throttling
  • Background garbage collection
  • TRIM support (for Windows and Linux)
• Security Features:
  • Optional support for AES 256-bit encryption
  • TCG Opal 2.0 support (may not be present on all models)

Warranty & Support

• Standard Warranty: 3-year limited warranty
• Warranty Coverage: Defects in materials and workmanship
• Support Type: Return to vendor/RMA service
• Technical Support: Available through Dahua or distributor channels
• Documentation: Datasheet available from manufacturer

Packaging Contents

• Dahua 128GB NVMe M.2 PCIe SSD
• Mounting screw (may or may not be included)
• Limited documentation/warranty card
• Anti-static bag

Installation & Setup

• Physical Installation:
  • Insert into M.2 slot at 30-degree angle
  • Secure with mounting screw
  • Ensure proper key alignment (M-key)
• Software Setup:
  • Initialize disk in Disk Management (Windows)
  • Format with NTFS, exFAT, or APFS (depending on OS)
  • Enable TRIM for optimal performance
• Boot Drive Setup:
  • Enable NVMe boot in BIOS/UEFI
  • Install operating system using UEFI mode
  • Install appropriate NVMe drivers if needed

Performance Comparison

• Compared to SATA SSD: 3-4x faster sequential read/write speeds
• Compared to HDD: 20-30x faster access times, 5-10x faster sequential speeds
• Compared to higher-end NVMe: Lower performance than PCIe 4.0 or DRAM-equipped models
• Real-World Performance:
  • OS boot time: 10-15 seconds
  • Application loading: 2-3x faster than HDD
  • File transfers: Limited by SLC cache size for large files

Use Cases & Recommendations

• Ideal For:
  • Budget system boot drive
  • Secondary storage in gaming PCs
  • Office productivity computers
  • Light gaming systems
  • Media center PCs
• Not Recommended For:
  • High-performance gaming (due to lower endurance)
  • Video editing workstations (due to limited capacity and performance)
  • Server applications (due to lower endurance rating)
  • Frequent large file transfers (cache limitations)
• Capacity Considerations: 128GB fills quickly with Windows + applications; consider 256GB+ for boot drives

Brand Information

• Manufacturer: Dahua Technology Co., Ltd.
• Headquarters: Hangzhou, China
• Founded: 2001
• Primary Business: Video surveillance equipment, security solutions
• SSD Business: Diversification into storage products
• Market Position: Budget to mid-range storage solutions

Important Notes & Recommendations

• Capacity Reality: 128GB actual usable space is ~119GB after formatting and over-provisioning
• Performance Consistency: Write speeds may drop significantly after SLC cache is exhausted
• Endurance: 80-100 TBW is suitable for light to moderate use; heavy users should consider higher endurance drives
• Compatibility: Verify M.2 slot supports PCIe NVMe (not just SATA) before purchase
• Heatsink Consideration: May benefit from heatsink in sustained workloads, though thermal throttling is built-in
• Firmware Updates: Check manufacturer website for firmware updates for stability and performance improvements
• Backup Strategy: Always maintain backups; SSDs can fail without warning unlike HDDs
• Value Proposition: Budget NVMe SSD offering decent performance for price-sensitive applications