What is typical storage hierarchy, Computer Engineering

Assignment Help:

Q. What is typical storage hierarchy?

A typical storage hierarchy is displayed in Figure above. Though Figure shows only block diagram however it includes storage hierarchy:   

Register

Cache memory

Main memory

Secondary Storage and 

Mass Storage. 

As we move up hierarchy we encounter storage elements which have faster access time and higher cost per bit stored as well as slower access time as a result of moving down hierarchy. So cache memory normally has the fastest access time and the smallest storage capacity as well as the highest cost per bit stored. Primary memory (main memory) falls next in storage hierarchy list. On-line, direct-access secondary storage devices like magnetic hard disks make up level of hierarchy just below main memory. Off-line, direct-access and sequential access secondary storage devices like magnetic tape, ZIP disk, Floppy disk and WORM disk etc. fall next in storage hierarchy. Mass storage devices generally referred to as archival storage are at the bottom of storage hierarchy. They are cost-effective for storage of very large quantities of data when fast access time is not essential.

Please note two significant points here: 

  • Size of memory increases as we move down hierarchy.
  • Quantum of data which is transferred between two consecutive memory layers at a time also increases as we go from a higher to lower side. For illustration from main memory to Cache transfer one or a few memory words are accessed at a time while in a hard disk to main memory transfer, a block of about 1 Megabyte is transferred in a single access.

 


Related Discussions:- What is typical storage hierarchy

What is canonical and standard forms, Q.What is Canonical and Standard Form...

Q.What is Canonical and Standard Forms? An algebraic expression can express in two forms: i) Sum of Products   (SOP) for example (A . B¯) + (A¯ . B¯)            ii) Produ

Create an input buffer, Q. Create an input buffer ? CODE SEGMENT ......

Q. Create an input buffer ? CODE SEGMENT ... MOV AH, 0AH                       ; Move 04 to AH register MOV DX, BUFF                   ; BUFF must be defined in data

Give detail explanation about arithmetic micro-operations, Give detail expl...

Give detail explanation about Arithmetic Micro-operations These micro-operations perform some essential arithmetic operations on numeric data stored in the registers. These bas

Algorithm of non-repudiation designing e-cash based system, Give a suitable...

Give a suitable algorithm of non-repudiation in designing e-cash based system. The algorithm of non-repudiation in designing e-cash based system is as illustrated below: Ke

What do you meant by an expert system, (a) What do you meant by an Expert S...

(a) What do you meant by an Expert System (ES) and explain briefly the essential differences between a Decision Support system and ES. (b) What are decision tables and what are

Define in detail about the architecture, Define in detail about the Archite...

Define in detail about the Architecture Architecture is the set of resources visible to machine language programmer: Registers, the memory, data representations, instructions

What is the difference between awt and swt, SWT (Standard Widget Toolkit) i...

SWT (Standard Widget Toolkit) is a totally independent Graphical User Interface (GUI) toolkit from IBM. They formed it for the creation of Eclipse Integrated Development Environmen

Transaction that are programmed by the user, How the transaction that are p...

How the transaction that are programmed by the user can be protected? By executing an authority check.

Unlike ipv4 & ipv6 which field in base header not include, Unlike Ipv4, Ipv...

Unlike Ipv4, Ipv6 does not include which field in the base header? Unlike Ipv4, Ipv6 does not contain the Field for Fragmentation information into the base header.

Example of time division multiplexing, Two computers using TDM take up turn...

Two computers using TDM take up turns to send 100-bytes packet over a shared channel that operates at 64000 bits per second. The hardware takes 100 microseconds after one computer

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd