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

Part Number	Description / PDF	Quantity
AP-FM004GD1305S-T Apacer	SSD 4GB SLC ATA 5V	0
APS25AFB256G-4BTM1GT Apacer	SSD 2.5" SATA 15NM MLC 256GB	0
APSDM016GQ2WN-ETM1 Apacer	SATA3 DISK MODULE 7-PIN/90 DEGRE	0
APSDM001GS2AN-CTW Apacer	SATA3 DISK MODULE 7-PIN/180 DEGR	0
AP-UM004GT13ES-2MSNRT Apacer	SSD 4GB SLC 5V	0
APSDM008GL2WD-CTW Apacer	SATA3 DISK MODULE 7-PIN/180 DEGR	0
APSDM008GA2AN-CTM1W Apacer	SATA3 DISK MODULE 7-PIN/180 DEGR	0
AP-UM008GR23CS-2T Apacer	USB DISK MODULE SLC 180D 8GB	0
AP-FM008GD1305S-TW Apacer	SSD 8GB SLC ATA 5V	0
APSDM064GB2AN-CTM1GC Apacer	SATA3 DISK MODULE 7-PIN/180 DEGR	0
APM016GNEAN-3GTM1W Apacer	MSATA MINI H1-M (MO-300B) SATA3	0
AP-UM002GR31CG-2MSNRT Apacer	USB DISK MODULE SLC 90D MOUNTING	0
AP-UM128MAU0CS-2T Apacer	USB3.0 DISK MODULE SLC 180D 1U 1	0
APSDM008G12AN-PTM1W Apacer	SATA3 DISK MODULE 22-PIN 90 DEG	0
APM2T42SM22008GTN-6ETMW Apacer	SSD 2242 MLC DEVSLP 8GB 15NM	0
APSDM256GM9CN-6BTM Apacer	SSD 256GB MSATA MLC SATAIII 3.3V	0
APS18AFA128G-4BTM1G Apacer	1.8" SATA3 SSD MLC 128GB DEVSLP	0
APSDM001GE2AN-CTW Apacer	SATA3 DISK MODULE 7-PIN/90 DEGRE	0
AP512GPPSS25-R Apacer	NAS 2.5" SATA3 SSD	18
APSDM008GK2AN-CTW Apacer	SATA3 DISK MODULE 7-PIN/180 DEGR	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.