Any hardware products have good or bad, high performance and low performance. Today, Xiaobian mainly shares the mechanical hard disk for everyone to see how good or bad. Throughout this article, you can understand: What is the main reason for the hard disk, what factors determine the performance of the hard disk, which is in the purchase When the hard disk is used, it is still very helpful. Ps. This article only discusses mechanical hard drives, SSD solid state drives. Mechanical hard disk core parameter capacity 500GB -4TB interface SATA2.0, SATA3.0 ● How many hard disk interfaces? How to see the hard disk interface type number of revolutions 5400 rev /min, 7200 rev /min ● How to see the hard disk speed The higher the hard disk speed, the better? Cache 8M, 16M, 32M, 64M ● How to look at the hard disk cache hard disk cache size View method Hard disk has bad sectors How to repair hard disk bad track shielding isolation method, hard disk detection tool which is good one, about the hard disk brand early hard disk brands, mainly include: Seagate, West, Toshiba, Samsung, ETOP, Hitachi, Maxtor, and now the mechanical hard drive brand is basically only Seagate and Western Digital. Other hard drive manufacturers have either closed down or been acquired by the two giants. For example, Seagate acquired the Samsung Hard Drive Business Unit, and Western Digital acquired “Hitachi”. At present, Toshiba hard drives can still be seen on the market, but the market share of Toshiba hard drives is not enough to compare with Seagate and the West. For users who purchase mechanical hard drives, the current consideration is mainly Seagate and Western Digital. This is also the most well-known 2 major mechanical hard disk manufacturers. The two are well-known, but from this year's shipments, Western Digital hard drives are more than Seagate. Some, for the consumer, the two brands are not much different, you can choose according to your preferences. Second, on the capacity Today's mechanical hard disk capacity is generally relatively large, 500GB start, compared to SSD solid state hard drive, has an absolute advantage in storage capacity. For the current mainstream installed users, the general choice is 500G, 1TB mostly, and the other 2TB large capacity hard disk is gradually popular. In terms of angle, the 500GB hard drive can meet the needs of most users. However, the current 1TB hard drive is only about 50 yuan more expensive than the 500G hard drive, and the capacity is 1TB, which is twice the 500G. In terms of cost performance, the 1TB hard drive is undoubtedly better, so it is more worthy of recommendation. The following parameters are related to the performance of the mechanical hard disk. The performance of the hard disk is mainly determined by the reading and writing speed. 3. The interfaces of the hard disk interface mainly include IDE and SATA. IDE hard disk interface, due to slow transmission speed, has long been eliminated, and now the new computer is SATA hard disk interface, but you can also see the IDE interface on some classic machines. Due to the limitations of the interface, there is no need to upgrade the hard disk for this old computer. SATA interface is the mainstream, SATA hard disk interface can be divided into: SATA2.0 and SATA3.0, of which SATA2.0 maximum transmission speed is 300M /s (3Gb /s), while SATA3.0 maximum transmission rate is 600M /s (6Gb /s), as far as the hard disk interface is concerned, SATA 3.0 has a higher transfer rate because it is more recommended. At present, the SSDs are all SATA3.0 interfaces, and many ordinary mechanical hard drives have begun to adopt the SATA3.0 interface. However, the old PCs may still be SATA2.0 interfaces. Therefore, when buying a hard disk, it is best to check the hard disk parameters to see if it is a SATA3.0 interface. Fourth, on the hard disk number of hard disk speed refers to the number of times the disk in the disk set disk is rotated per minute, the unit is r /min, in general, the higher the hard disk speed, the faster the hard disk read speed. Generally, desktop hard drives have 5400 rpm, 7200 rpm, 10000/min and 15,000 rpm. Currently, 7200 rpm of desktop hard drives is the mainstream, 5400 rpm basically exits the market, and 10,000 rpm or more. SCSI and the latest SAS hard drives are mainly used in the field of server hard drives. Notebook mechanical hard drives, most of them are still 5400 rpm /min, some of the better notebook hard drives have used 7200 rev /min, the higher the number of hard drives, the better performance, the better. Fifth, on the cache In general, the hard disk cache capacity is the better, and the life of the large cache hard disk is better, so when you choose the hard disk, the high-capacity hard disk cache is preferred. However, the cache capacity is not the only parameter that determines the performance of the hard disk, as well as the interface, speed, etc., that is, the hard disk cache is not the core parameter that determines the performance of the hard disk, but it is also related to some performance and life. At present, the mainstream desktop hard disk cache has reached 64MB, some older hard drives, the cache capacity is 32M or 16M, so now when choosing a hard disk, it is best to choose a 64M cache hard disk. For notebook hard drives, most of the current cache is still 16M, and many are still 8M cache. When choosing a notebook hard drive, it is best to choose a product with 16M cache or above, so the comprehensiveness will be better. Sixth, the capacity of the hard disk single-disc hard disk is increasing sharply, and the single-disc capacity of the hard disk is also worthy of attention. Single-disc capacity refers to the capacity of a hard disk, because a disk usually has several disks. The capacity of a single disk plays a vital role in the size of the disk, and the capacity of the single disk directly determines the continuous data transmission of the disk. rate. In the case of the same speed of the hard disk, a single disk with a larger capacity than a single disk can read more files in the same time, so the transmission rate of the hard disk will also be faster. The most mainstream one is the single disk 1TB. Hard drive, the speed is very good. How do you think about the last hard drive? For the current desktop hard drive, it is best to choose 1TB capacity, SATA3.0 interface, 7200 rpm, 64M cache single-disc Western data or Seagate hard drive; for notebook users, 500G or 750G is still the mainstream, but the interface is also the most Good choice of SATA3.0, the number of revolutions more than 5400 rpm, the cache capacity of more than 16M hard drive products. This article comes from [System Home] www.xp85.com