Answer:
1、 Laptop Expansion: Choose L200 Series
Recommended model: Choose according to capacity requirements - choose HDWL110EZSTA (7mm thickness, 128MB cache) for 1TB ultra-thin version; 2TB is required to select HDWL120EZSTA (9.5mm thickness, 128MB cache); Due to limited budget, choose the 500GB model HDWK105UZSVA (7mm thickness, 8MB cache).
Key focus parameters:
Thickness: Laptop hard drive slots support 7mm or 9.5mm, with 7mm models having wider compatibility (such as ultrabooks), while 9.5mm is only suitable for traditional laptops;
Interface: L200 supports SATA 6Gbit/s (mainstream) and SATA 3Gbit/s (compatible with old laptops), please confirm the laptop interface version (6Gbit/s is preferred unless otherwise specified);
Cache: 128MB cache (1-2TB 7mm model) is more suitable for multitasking (such as simultaneously opening documents and playing videos) than 8MB cache (500GB/1TB 9.5mm model), improving response speed.
2、 Home monitoring system: choose S300 series
Recommended model: Choose according to the number of cameras - select HDWT140UZSVA (4TB, 5400rpm, 128MB cache) for 4-8 cameras; Select HDWT360UZSVA (6TB, 7200rpm, 256MB cache) for cameras with 8-16 channels; Select HDWT31AUZSVA (10TB, 7200rpm, 256MB cache) for 16-64 high-resolution cameras.
Key focus parameters:
Speed and cache: 7200rpm (6-10TB model) is more suitable for concurrent recording of multiple cameras than 5400rpm (4-5TB model) to avoid frame loss; 256MB cache (6-10TB model) can reduce frequent head movement and improve continuous write stability;
Camera support: S300 supports up to 64 cameras (10TB model), depending on the number of home monitoring cameras (such as 4 cameras for the entrance, living room, and bedroom, 4TB is sufficient); If there are 12 roads including garage and balcony, 6TB or more is required;
Operation mode: It must support "24/7 operation". The S300 has optimized the head life and heat dissipation design for monitoring scenarios to avoid long-term overheating faults.

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