disadvantages of storage devices (give 5 examples )
Answers
Answer:
The data storage capacity of the data center depends on various types of storage devices. There are three types of storage devices, including three types of hard disks (SSD; HHD; HDD).
Solid State Drive
A hard disk made of a solid-state electronic memory chip array is composed of a control unit and a memory unit (FLASH chip, DRAM chip). Solid-state hard drives have the same specifications and definitions, functions, and methods of use as those of ordinary hard drives in terms of interfaces. They are also completely consistent with common hard drives in terms of product appearance and size. Is widely used in military, automotive, industrial control, video surveillance, network monitoring, network terminals, electricity, medical, aviation, navigation equipment and other fields.
Advantages: fast read and write speed; shock and drop resistance; low power consumption; no noise; large operating temperature range; lightweight
Disadvantages: small capacity; limited life; high selling price
Traditional hard disk (HDD, short for Hard Disk Drive)
Traditional hard disk (HDD, short for Hard Disk Drive) is the English name of the hard disk drive. The most basic computer memory, we often say computer hard disk C disk, D disk partitions are all hard drives. At present, the common disk capacities of hard disks are 80G, 128G, 160G, 256G, 320G, 500G, 750G, 1TB, 2TB, and so on. Hard disk can be divided into 3.5-inch, 2.5-inch, 1.8-inch, etc. according to the size of the volume; according to the number of revolutions can be divided into 5400rpm/7200rpm/10000rpm;
Comparison of SSD and HDD
In the past 10 years, the performance of the CPU has increased by more than 150 times, while the traditional hard disk has only increased by 1.5 times. This uneven development has greatly affected the overall performance improvement, especially in terms of I/O. And SSDs (Solid State Drives) have no heads, motors, disks, etc. Compared to traditional hard drives, they carry NAND Flash chips as storage media and are unmatched by traditional hard drives in terms of speed, power consumption, and portability.
Hybrid Hard Drive (HHD)
It is a large-capacity storage device that includes both a conventional hard disk and a flash memory module. The most frequently written or restored data in flash processing storage. Many companies are beginning to provide variants of this technology, and they expect it to be sought after in high-end systems, especially in laptops and personal digital assistants.
Advantages: faster data storage and recovery in applications such as word processors; reduced system startup time; reduced power consumption; reduced heat generation; extended hard disk life; longer battery life for laptops and PADs; reduced operating noise levels
Disadvantages: The seek time of the data in the hard disk is longer; the spin of the hard disk changes more frequently; the processing of the flash module fails, and it is impossible to perform data recovery therein.
The total hardware cost of the system is higher
Currently, traditional hard drives still occupy a major share of the hard disk market due to low cost and other factors. However, as the cost of SSDs continues to decrease, technologies continue to improve and the system is better supported, and the current mainstream notebook computers all have SATA configurations. And mSATA interface, including the current ultrabook (Ultrabook) is only equipped with SSD can achieve "lighter, faster, lower power consumption, the future to replace the traditional hard drive is also a general trend.
Explanation:
Answer:
1) to slower to access data than ROM or RAM chips
2) hard disks can crash which stop the computer from working
3) regular crashes can damage the surface of the disk