What are the main and secondary storage methods' respective differences, both in terms of speed and cost?
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What are the main and secondary storage methods' respective differences, both in terms of speed and cost?
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- Consider the following disk characteristics: 8 msec = Average seek time Average rotational delay = 3 msec Maximum rotational delay = 6 msecs Spindle speed = 10,000 rpm Sectors per track = 170 sectors Sector size = 512 bytes. What is the average time to read one sector?A hard disk with a transfer rate of 10 M bytes/ second is constantly transferring data to memory using DMA. The processor runs at 600 MHz, and takes 300 and 900 clock cycles to initiate and complete DMA transfer respectively. If the size of the transfer is 20 Kbytes, what is the percentage of processor time consumed for the transfer operation?At a minimum, how many bits are needed in the MAR with each of the following memory sizes? A memory unit that is said to be 640 KB would actually contain how many memory cells? What about a memory of 512 MB? What about a memory of 2 GB? Explain what use read-only memory (ROM) serves in the design of a computer system. What type of information is kept in ROM, and how does that information originally get into the memory?
- The terms "digital memory" and "storage device" are often used interchangeably. To what extent would it benefit consumers if there were a single memory standard, similar to how there is just one standard for SSD sizes? Can customers save money and time by adopting a single standard? There are two methods for accessing memory: sequential and direct. For what reason are more and more essential devices adopting direct access? How can we move information from a sequential-access device to a direct-access device?Suppose that a magnetic disk has an average seek time of 4 ms, a rotation rate of 5400 RPM, a transfer rate of 50 MB/second, a sector size of 512 bytes, and controller overhead of 2 ms. What is the average amount of time to read a single sector?A manufacture wishes to design a hard disk with a capacity of 60 GB or more (using thestandard definition of 1GB = 230 bytes). If the technology used to manufacture thedisks allows 512-bytes sectors, 1024 sector/track, and 60% tracks/ platter, how manyplatters are required?
- A manufacture wishes to design a hard disk with a capacity of 60 GB or more (using thestandard definition of 1GB = 230 bytes). If the technology used to manufacture thedisks allows 512-bytes sectors, 1024 sector/track, and 60% tracks/ platter, how many platters are required?Which methods are used when it comes to serialization and deserialization of data?In the year 2000 two major DRAM memory standards, RDRAM and DDR DRAM, with differing design philosophies, competed in the market. Discuss the core technical differences between each technology, and the advantages and disadvantages of each design approach. Q1 (а) The present mass market memory standards are DDR4 and DDR5 DRAM. What are the key differences between these standards and the original (b) DDR DRAM?
- What would be the effect on cost and performance if tape storage were to achieve the same areal density as disk storage? (Areal density is the number of gigabits per square inch.)How do non-volatile memory express (NVMe) SSDs differ from traditional SATA SSDs, and what advantages do they offer in terms of storage performance?How do memory compression techniques like LZ77 and LZ78 work, and what are their benefits in memory management?