Showing posts with label information. Show all posts
Showing posts with label information. Show all posts
Thursday, December 1, 2016
What is RAID 0 General Information
What is RAID 0 General Information
What is RAID 0
raid0What is RAID 0
What is RAID 0We published an article about RAID 5: "How RAID 5 work? Shorter and
easier to interpret than ever" - and now is the time for a full series. We will try to show you
, in a few words, and interpretation of the shortest record levels of RAID - 0, 1, 1 + 0, 0 + 1, 2, 3, 4, 6
and matrix. Now is the time for RAID 0 - take a look ...
What is RAID 0
We can describe RAID 0 as the connection of the two (or more) physical disks - so as to look like a
logical drive and one engine. In such a case, and ability are all equal to the number of times the disk
in the "smaller" ones ability. ie- if you have two hard drives - 250GB 500GB and, and the size of the
array will be equal to 500 GB.
RAID 0 is called also "bar" or "stripping size" group. This is because it smells data (chart) between
tablets - without symmetry to repeat information. In other words, RAID 0 does not provide data
redundancy. Things, the settlement of data between disks leads to a significant acceleration in
the read and write operations - because of these parallel operations on all disks in the array.
Pros and Cons
The ability of the full group as a whole. Through the implementation of such a solution, it is also
possible to increase the speed of reading and writing (but only compared with one disc).
When we talk about RAID 0, its also necessary to write about the negatives. The first is the issue
of safety data. Is not designed like this method to prevent data loss. This means that a single disk
failure may cause loss of all data contained in the matrix. Moreover, the data can be restored can
be difficult because they are distributed on all disks. It is also impossible to retrieve the "blueprint"
of data. Even when you use a special (and expensive) tools, data recovery can be incomplete and corrupt.
The second thing is the ability. Used even if two disks - 100 GB and 1 TB - will store set equal to
200GB. So the use of disks with different capacities is uneconomical because of the inability to
use the full storage potential.
RAID 0 is useful when
Because the only RAID interest 0 is the write / read speed, we can at one point only the rational
use of it - to build a cheap and effective matrices and solutions use based on the RAID 1 + 0 or RAID 0 + 1.
Check it out for RAID 1 and RAID 0 + 1 and RAID 1 + 0 solutions.
raid0What is RAID 0
What is RAID 0We published an article about RAID 5: "How RAID 5 work? Shorter and
easier to interpret than ever" - and now is the time for a full series. We will try to show you
, in a few words, and interpretation of the shortest record levels of RAID - 0, 1, 1 + 0, 0 + 1, 2, 3, 4, 6
and matrix. Now is the time for RAID 0 - take a look ...
What is RAID 0
We can describe RAID 0 as the connection of the two (or more) physical disks - so as to look like a
logical drive and one engine. In such a case, and ability are all equal to the number of times the disk
in the "smaller" ones ability. ie- if you have two hard drives - 250GB 500GB and, and the size of the
array will be equal to 500 GB.
RAID 0 is called also "bar" or "stripping size" group. This is because it smells data (chart) between
tablets - without symmetry to repeat information. In other words, RAID 0 does not provide data
redundancy. Things, the settlement of data between disks leads to a significant acceleration in
the read and write operations - because of these parallel operations on all disks in the array.
Pros and Cons
The ability of the full group as a whole. Through the implementation of such a solution, it is also
possible to increase the speed of reading and writing (but only compared with one disc).
When we talk about RAID 0, its also necessary to write about the negatives. The first is the issue
of safety data. Is not designed like this method to prevent data loss. This means that a single disk
failure may cause loss of all data contained in the matrix. Moreover, the data can be restored can
be difficult because they are distributed on all disks. It is also impossible to retrieve the "blueprint"
of data. Even when you use a special (and expensive) tools, data recovery can be incomplete and corrupt.
The second thing is the ability. Used even if two disks - 100 GB and 1 TB - will store set equal to
200GB. So the use of disks with different capacities is uneconomical because of the inability to
use the full storage potential.
RAID 0 is useful when
Because the only RAID interest 0 is the write / read speed, we can at one point only the rational
use of it - to build a cheap and effective matrices and solutions use based on the RAID 1 + 0 or RAID 0 + 1.
Check it out for RAID 1 and RAID 0 + 1 and RAID 1 + 0 solutions.
Go to link download
Saturday, November 12, 2016
Full information about computer storage devices
Full information about computer storage devices
Hello again my friends the last lesson we talk about Ram, ROM and cached memory .This lesson we will talk about storage devices in computer. Lets start now.
Storage Devices
The volumes are the units that can keep your data and programs and those units are divided into: solid cylinders, and floppy discs, CDs (laser CDs), and the multifaceted digital roller, and the magnetic strip, and flash memory.
Hard Disks
A small unit in the size of the palm of the hand almost always exist in and installed in the central processing unit (CPU) and the cylinder characterized by sizable storage capacity as they reach the storage capacity to store more than ten thousand books any nearly ten billion character.
Floppy Disks
There are two types 3.5-inch floppy discs are now used in the process of saving data view of their small size and the large size of the storage capacity flexible cylinders 5.25 is no longer used now concision consider the small size of the amplitude storage and large size.
Compact Disks (CD)
CDs or laser discs are the latest means of storage where they are used to store audio and video clips, where storage capacity of up to 650 six hundred and fifty million characters. The disadvantage of this quality that they can not register only once and only one.
DVD Digital Versatile Disk
It is a type of high-capacity CDs used to store 2.10 GB of information. And used compact disc (CD) to store music, usually used to store high-quality movies instead of video tapes
Magnetic Tape
This type of storage media similar to what we see in the world of audio cassettes magnetic audio recorder and based on the same technology information is stored in the form of magnetic points sequentially, and these strips are commonly used in save backups of data.
Flash Memory
Is a memory used to store data and is characterized by its small size and large storage capacity, where up to more than GB, can also scan data from them and write them more than once and is connected to the computer by USB.
After explaining parts Computer physical detail must clarify the relationship and the extent of interdependence of each part with the other to carry out operations required from the computer example for doing arithmetic what first must enter numbers by Input units are then processed by the control unit Central to get the results that are brought out of During the output units, and stored by the storage units and the following figure illustrates the interdependence of computer parts with each.
My friend now we finished the first part of computer components (Hardware Components) the next lesson we will talk about computer software part .To be continued .Thank you
Engineer: Ashraf Mansour
Egypt
Previous Lessons
Computer InputUnits
Computer OutputUnits
CPU
Main Memory
Go to link download
Sunday, October 16, 2016
Full information about cpu for computer beginners
Full information about cpu for computer beginners
Hello again my friends in all over the world .The last lesson we talk about computer output units. Today we will talk about very important lesson in computer hardware called (CPU) this means central processing unit and this unit is the most important unit in computer hardware .This unit look like the brain of human .Lets start our lesson .
CPU
What is mean by CPU?
CPU: Means central processing unit.
Now you dont understand this Term. We will explain now dont worry my friend.
CPU Divided into three parts:
- ALU : Means Arithmetic logic Unit
- CU : Means Control unit
- Main Memory
Now we will explain each units and its function in computer .
ALU : Means Arithmetic logic Unit
This unit performs arithmetic operations such as addition, subtraction, division, etc. and logical operations is any process that is where the comparison between the amounts or sort and arrange operations such as greater than or less than or equal.
CU: Means Control unit
Coordinate operations between the various units of the computer where it controls in both the input and output to and from various units in the Computer.
When you run computer software used is loaded and already stored on the disc hard to RAM. (RAM) and computer use this memory in Business, and store programs and data being processed and emptying the memory when the device is switched off or power outages to be downloaded programs when you restart the device.
Now we finish our lesson about CPU .I hope my friends understand this lesson .Next lesson we will explain the main memory and its types .Follow us my friends and share lessons as you can.
Engineer: Ashraf Mansour
Egypt
Previous lessons
Computer InputUnits
Computer OutputUnits
Go to link download
Thursday, September 8, 2016
Full information about Main Memory
Full information about Main Memory
Hello my dear friends, in the last lesson we explain the CPU components in details .Today we will talk about Main memory .What is the main memory? What are the types of main memory? What is the function of main memory? Lets start our lesson now.
Main Memory
The computer need to retrieve and remember information they handle just as man needs as well, so you must save the information, either temporarily or permanently. Addressing information then stored in a digital image using the binary system, a system of numerical which uses only two digits (0, 1). In our lives we use the decimal system which uses ten numbers (from zero to 9).
Units of measurement memory
Memory capacity is measured in the following four basic units:
Byte: is the amount of memory required to represent a single character bilateral logging, and consists box (byte) of eight digits (bits Bit) any binary number, which can represent the bilateral digits (0, 1).
Kilobyte: KB per kilo bytes = 1024 bytes
Megabyte: Mb (shortcut M or MB) = 1024 KB
Gigabyte: Gigabyte (shortcut G or GB) = 1024 MB
Types of main memory
Main memory is divided into three types:
- RAM :Random Access Memory
- ROM : Read Only Memory
- cache memory
Now we will explain each type in details .Be ready my friends
RAM: Random Access Memory
Receive the data and program memory unit entry as you receive the results from the arithmetic and logic unit and cached it temporarily (where you lose this contained memory once the electrical separation) so called temporary or volatile memory. The more memory capacity increased the amount of data and the size of the programs that can be traded at the same time.
Types of Ram
ROM: Read Only Memory
Contain programs and the basic data needed to run the computer and the data and programs had been registered by the manufacturer. They fixed memory are not affected by the interruption of power supply and called read-only memory that can not be written or amendment or cancellation of their contents by the user, but can only read whats inside
Cache memory
Used in the course of operations which is about a cache of very high speed than the speed of main memory. And used for temporary storage of data and instructions required retrieved many times during the operation of the data which helps speed data processing. The estimated capacity of the cache of about 512 KB or more.
Now we finish our lesson about Ram .I hope all my friends understand this lesson .The next lesson we will talk about storage devices .Thank you
Engineer : Ashraf Mansour
Egypt
Previous Lessons
Computer InputUnits
Computer OutputUnits
CPU
Go to link download
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