Solid State Drives (SSDs), Hard Disk Drives (HDDs)

Part Number	Description / PDF	Quantity
SQF-SLMM4-512G-SBC Advantech	SSD 512GB S-SLIM SATA MLC	0
VSFB18CI064G-100 Virtium	1.8" 5MM	0
SQF-SMSU4-256G-SBE Advantech	SQF MSATA 640 256G UMLC	0
AP-UM001GR13CS-2T Apacer	USB DISK MODULE SLC 90D 1GB	0
APSDM064GN2WN-ETM1G Apacer	SATA3 DISK MODULE 7-PIN/180 DEGR	0
APS186B008G-BTW Apacer	SSD 8GB SLIM-SATA SLC SATAIII 5V	0
APS25AFB032G-4DTM1GWT Apacer	SU210-27 PLASTIC SCL-LITE 32G EX	0
SQF-SLMU4-32G-S9E Advantech	SSD 32GB S-SATA UMLC	0
SQF-SMSM2-32G-SBC Advantech	SQF MSATA 640 32G MLC	0
SQF-SM8M1-4G-S9E Advantech	SSD 4GB MLC M.2 2280	0
APSDM032GL2WD-CT Apacer	SATA3 DISK MODULE 7-PIN/180 DEGR	0
HDEPX20GEA51F Toshiba Electronic Devices and Storage Corporation	16TB SATA NEARLINE 4KN	20
APSDM008G42AN-PT Apacer	SATA3 DISK MODULE 22-PIN/180 DEG	0
AP-UM001GT13ES-2MHT Apacer	USB DISK MODULE SLC 90D MOUNTING	0
SFSA128GV3AA4TO-I-NC-226-STD Swissbit	SSD 128GB SLIM SLC SATA III 5V	0
APS18AFA032G-4ATWL Apacer	1.8" SATA3 SSD 3.3V SLC DEVSLP 3	0
APSDM032GK2AN-CTM1 Apacer	SATA3 DISK MODULE 7-PIN/180 DEGR	0
AP-UM001GT40EG-2NRT Apacer	USB DISK MODULE SLC 180D NON-REM	0
SQF-SDMS2-8G-9HC Advantech	MEM SSD SLC SATA III	0
SQF-SM6U2-4G-S9E Advantech	SQF M.2 2260 630 4G UMLC	0

Solid State Drives (SSDs), Hard Disk Drives (HDDs)

1. Overview

Storage devices are critical components in modern computing systems, enabling persistent data retention and rapid access. Memory cards (e.g., SD/microSD) provide portable storage for consumer electronics. SSDs use NAND flash memory for high-speed non-volatile storage, while HDDs rely on magnetic spinning platters for cost-effective large-capacity storage. These technologies collectively support applications ranging from personal devices to enterprise data centers.

2. Main Types and Functional Classification

Type	Function Characteristics	Application Examples
SD Cards	Standardized portable storage with varying speed classes	Digital cameras, laptops
microSD	Compact form factor for mobile devices	Smartphones, drones
CF Cards	High durability for professional imaging	DSLR cameras, industrial equipment

3. Structure and Components

SSDs consist of a controller (managing data flow), NAND flash memory chips (storing data), and DRAM cache (accelerating access). HDDs contain magnetic platters (data storage), read/write heads (data access), spindle motors (platter rotation), and actuator arms (head positioning). Memory cards integrate flash memory with controllers in compact packages.

4. Key Technical Specifications

Parameter	Importance	SSD Example	HDD Example
Sequential Read/Write Speed	Affects data transfer efficiency	3500-7000 MB/s (NVMe)	100-200 MB/s (SATA)
Random 4K IOPS	Measures small-file access performance	50,000-100,000 IOPS	100-200 IOPS
Durability (TBW)	Indicates lifespan	150-1500 TBW	Relevant but less quantified

5. Application Fields

SSDs: Gaming PCs, enterprise servers, cloud storage
HDDs: NAS systems, surveillance storage, archival
Memory Cards: Action cameras, IoT devices, automotive systems

6. Leading Manufacturers and Products

Manufacturer	Product Example	Key Features
Samsung	980 Pro NVMe SSD	PCIe 4.0, 7000 MB/s
Western Digital	Ultrastar DC HC550 HDD	18TB, helium-sealed
SanDisk	Extreme microSDXC	170MB/s, UHS-I

7. Selection Recommendations

Consider interface compatibility (e.g., SATA vs NVMe), required throughput, endurance ratings, and cost-per-GB metrics. For enterprise environments prioritize MTBF and error correction features. Consumer applications should balance capacity and speed class (e.g., V30/U3 for 4K video recording).

8. Industry Trends

3D NAND stacking enables terabit-scale SSDs, while PCIe 5.0 interfaces will double current speeds. HDDs adopt SMR and HAMR technologies to reach 50+TB capacities. Memory cards transition to SD Express (PCIe Gen3) for 985MB/s performance. Hybrid storage solutions combining fast SSD caching with high-capacity HDDs gain traction in data centers.