What kind of hard drive should I use to save data for a long time?
Use mechanical hard disks to store data for a long time. Features of mechanical hard disks:
1. The data stored in mechanical hard disks is safe;
2. The data of mechanical hard disks are stored on tracks. The magnetic poles are used as storage media, so the data status is stable and not easy to be lost;
3. Even if the disk is seriously damaged, part of the data can be recovered.
Comparison of the advantages and disadvantages of mechanical hard drives and solid-state hard drives
1. Shock and drop resistance: Mechanical hard drives are all disk-type, and data is stored in disk sectors. . The solid-state drive is made of flash memory particles (i.e., memory, MP3, U disk and other storage media), so there are no mechanical parts inside the SSD solid-state drive, so it will not be affected even when moving at high speed or even with flipping and tilting. to normal use, and can minimize the possibility of data loss in the event of collisions and shocks. Compared with mechanical hard drives, solid hard drives have an absolute advantage.
2. Data storage speed: The speed of mechanical hard disk is about 120MB/S, the speed of SATA protocol SSD is about 500MB/S, and the speed of NVMe protocol (PCIe 3.0×2) SSD is about 1800MB/S. S, the SSD speed of NVMe protocol (PCIe 3.0×4) is about 3500MB/S.
3. Power consumption: The power consumption of solid-state drives is also lower than that of mechanical hard drives.
4. Weight: Solid-state drives are lighter in weight, 20-30 grams lighter than conventional 1.8-inch hard drives.
5. Noise: Since Solid Hardware has no mechanical parts and flash memory chips, it has the characteristics of low heat generation and fast heat dissipation. It also has no mechanical motors and fans, and the operating noise value is 0 decibels. Mechanical hard drives are much inferior.
6. Price: As of (2020/4/11), the brand’s 512GB solid-state drive is about 350 yuan. The price of a 1TB mechanical hard drive is only about 320. Solid state drives are more expensive than mechanical hard drives and have lower cost performance.
7. Capacity: The maximum capacity of solid state drive is 100TB 3.5 inches.
8. Service life: SLC particles only have a read and write life of 100,000 times, low-cost MLC particles have a read and write life of only 10,000 times, and TLC particles have a read and write life of about 3,000 times, and the cheapest The read and write life of QLC particles is only 400 times. Therefore, from this perspective, mechanical hard drives have a longer lifespan than solid-state drives. However, mechanical hard disks will wear out as the platters wear out. An unexpected power outage may cause the magnetic head to not hover in the parking area, causing damage to the platters, which may be damaged by other reasons. Therefore, mechanical hard disks may not necessarily have a longer lifespan than solid-state hard disks.
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