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The speed of a storage drive/hard drive/hdd is measured in RPMs or Revolutions Per Minute. The faster the RPM, the faster the drive can can access data.
Most laptops have 5,400 RPM HDDs while some have 7,200 RPM HDDs.
Most dektop computers have 7,200 RPM ones while some top of the line models run at 10,000 RPM (such as the Seagate Velociraptor)
There are also Solid State Drives (SSDs) which are just beginning to become popular that contain no moving parts. These speeds are measured in Mb/s which rates how much data can be transferred per second. HDDs can also be measured in this way but RPM speed is more common. SSDs also have separate read and write speeds
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Memory or storage used to adjust for speed differences between adjacent devices is what?
buffer
What is the name of a memory area used to temporarily hold data from lower speed storage devices to provide better access time?
Cache.
What is the purpose of the raid adapters?
to connect multiple storage devices for redundancy or speed
Is ram a secondary storage device?
ram is primary storage
Should fastest RAM be placed in the slot closest to processor or memory controller?
If you have a mix of RAM devices with different speed capabilities on a motherboard, the memory bus will work on speed of the slowest memory. Then it does not matter which slot you put which memory. - Neeraj Sharma
Differences between virtual memory and cache memory?
Virtual memory is defined as an abstraction of the main memory that extends the available computer memory by storing parts of content RAM that are not active. Cache memory is where data that is accessed often is stored so you are able to have quick access to it.
Compare the increase in size and increase in speed in the memory system hierarchy?
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.
Storage devices and technologies vary in terms of access speed capacity portability and price true or false?
True
What two word phrase refers to what the speed of a storage device is defined by?
Megabits per second (mb/s)
What is the criteria used in selecting a secondary storage device for a particular use?
. storage capacity . access speed . size . portability . cost
What are three tangible data storage resources of a typical computer system?
Cache Main Memory Secondary storage Each storage provides a different speed and amount of storage which is used by the CPU for processing instructions and data.
What is the CPU clock speed of the Blackberry torch?
The CPU clock speed of the Blackberry torch is 624 megahertz. It also features 512 megabytes of internal flash memory and 4 gigabytes of built in storage memory.
