Computer storage devices include any hardware that stores data. The most common type of storage device is a hard drive. The computer's primary hard drive stores the operating system, applications, and files and folders for users of the computer.
While the hard drive is the most known of all storage devices, other common types exist as well. Flash memory devices, such as USB drives and iPod nanos are popular ways to store data in a small, portable format. Other types of flash memory, such as compact flash and SD cards, are popular ways to store digital camera images.
External hard drives which use USB and Firewire sockets are common too. These types of drives are often used for video and photo storage, backing up internal hard drives, or for simply adding extra storage. Tape drives are another type of storage device. They are an older technology and use reels of tape to store data. They are typically used for backing up data.
Storage device hierarchy is comprised of the settings that determine the order that the storage devices are accessed. While that has traditionally been determined by the cable positions and jumpers on the drives, this is now a CMOS setting as well. The reason for that is because there are so many different types of storage devices, and any of them can be bootable. So without such a CMOS setting, there is no way for the bootloader and OS to know the order of the drives.
hierarchy of data storage is were the data is stored
Storage hierarchy is a techniqe of storing a data storage is basically judged on three main factors (cost, performance,&capacity)
draw a typical storage hierarchy pyramind.
Storage is measured in a hierarchy of bytes.
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Mark Tan Love Bernard Aguila
Processor registers occupy the top most position in memory hierarchy. They provide high-speed storage space and fast access to data.
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The memory system hierarchy refers to the different levels of memory in a computer system, ranging from the smallest and fastest memory to the largest and slowest memory. As we move down the hierarchy, we generally see an increase in storage capacity and a decrease in speed. However, the exact relationship between size and speed depends on the specific technologies used in each level of the hierarchy. At the top of the hierarchy is the CPU cache, which is the smallest and fastest type of memory. The cache is used to store frequently used data and instructions that the CPU can access quickly. The size of the cache is typically measured in kilobytes or megabytes, and it is designed to provide very fast access times, usually measured in nanoseconds. Moving down the hierarchy, we find main memory or RAM (Random Access Memory), which is larger than the cache and slower. RAM is used to store data and instructions that the CPU needs to access frequently but not as frequently as cache data. RAM is typically measured in gigabytes, and access times are typically measured in nanoseconds. Below RAM, we find secondary storage, which includes hard drives, solid-state drives (SSDs), and other types of non-volatile storage. These storage devices are larger than RAM but much slower. They are typically measured in terabytes, and access times are measured in milliseconds. Finally, we have tertiary storage, which includes magnetic tape, optical storage, and other types of very large but very slow storage devices. These devices are typically used for backup and archival purposes, and they have access times measured in seconds or even minutes. In general, as we move down the hierarchy, we see an increase in storage capacity and a decrease in speed. However, the rate of increase in size and decrease in speed varies depending on the specific technologies used in each level of the hierarchy.
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Dairy items are considered ready to eat. They would be on the highest shelf or above any raw protein.
There is no hierarchy.
hierarchy
Hierarchy