2012年11月17日星期六

Free Sticky Note

Free Sticky Note is a totally freeware that offers you a simple and easy way to remember all your intentions. You can create a list of things to do, write out your ideas in a meeting or create an alarm to notice you. Never have to worry about finding a pen and a paper to write notes, Free Sticky Note has an unlimited supply and is very easy to use and quick to open.

Free Sticky Note是一个完全免费的记事,为您提供一个简单易用的方式来记住你的意图。您可以创建一个要做的事情,你的想法写在会议或创建一个报警注意到你。从来没有担心找到笔和纸做笔记,记事贴有免费无限量供应,是非常容易使用,迅速打开。

Tutorials / 教程

How to make a new note? /   如何使一个新的笔记吗?

There are 2 ways to create a note with Free Sticky Note. First start the program, you will see a small icon in your tray. You can make a new note by:
  • Double left click on the icon
  • Right click on the icon and select "New Note"
有2种方式创建一个免费的记事票据。首先启动该程序,你会看到一个小图标在您的托盘。您可以建立一个新的说明:
  • 左键点击图标
  • 右键点击图标,选择"New Note"

How to change the color of my notes? / 如何更改我的笔记的颜色吗?

Right click on the small icon of Free Sticky Note in the tray, select "Change Style" and choose the new color you want. Next double click on the icon (or right click and select "New Note") to create a note with your favourite color.

免费的记事贴在托盘上的小图标,右键单击选择“更改样式”,然后选择你想要的颜色。下一页双击图标(或右键单击并选择“新票据”)创建注释,你最喜欢的颜色。







How to minimize the notes? / 如何最小化notes?

Just double click on any part of the note (exclude the "title", "content" and "close button" parts) to minimize your note.

只要双击任何部分的说明(不包括“标题”,“内容”和“关闭”按钮“部分),以
最小化notes.




I have an important work to do in a few minutes, can Free Sticky Note alarm me on time? / 我有一个重要的工作要做,在几分钟之内,Free Sticky Note可以提醒我的时间吗?

Yes, Free Sticky Note can! Just right click on the icon and select "Alarm Me". A dialog box appears and you can set when you want to be noticed. For example, you'll have to go in 10 minutes then you click on "Alarm Me after" and type "10". If you want to hear a sound when the alarm rings, tick on "Play Sound when alarm". To make sure you can hear the sound, you can click "Test Sound" to listen the sound (just a short sound). Notice that when the real alarm rings, you will hear an infinite sound until you turn it off.

是的,免费的记事可以!只需右键单击该图标,选择“报警”。会出现一个对话框,你可以设置当你要注意。例如,你必须在10分钟内走,然后你点击“报警后”和“10”型。如果你想听到的声音,当闹钟响起时,勾选“播放声音时,报警”。为了确保你能听到的声音,你可以点击“测试声音”听声音(只有很短的声音)。请注意,真正的闹钟响起时,你会听到一个无限的声音,直到你把它关掉。

After pressing "Set" button, a dialog will appear to confirm the alarm has been activated
按下“SET”按钮后,会出现一个对话框,确认报警被激活








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2012年11月15日星期四

What is Harddisk / 什么是硬盘



Harddisk


Alternatively referred to as a hard disk drive and abbreviated as HDD or HDD, the hard drive is the computer's main storage media device that permanently stores all data on the computer. The hard drive was first introduced on September 13, 1956 and consists of one or more hard drive platters inside of air sealed casing. Most computer hard drives are in an internal drive bay at the front of the computer and connect to the motherboard using either ATA, SCSI, or a SATA cable and power cable. Below, is an illustration of what the inside of a hard drive looks like for a desktop and laptop hard drive.

或者简称为硬盘驱动器,简称为HDD或硬盘驱动器,硬盘驱动器是电脑的主要存储介质设备,永久存储在电脑上的所有数据。 1956年9月13日,首次推出的硬盘驱动器由一个或多个硬盘驱动器盘片内部的空气密闭容器内。大多数的计算机硬盘驱动器在内部驱动器托架在电脑前和使用无论是ATA,SCSI或SATA电缆和电源线连接到主板上。下面,就是一个例证内的台式机和笔记本电脑的硬盘驱动器的硬盘驱动器看起来像什么。


** Note :  head actuator = 头致动器
               read/write actuator arm = 读/写促动臂
               read/write head = 读/写磁头
               spindle = 主轴
               platter = 磁盘
              Chassis = 底盘

As can be seen in the above picture, the desktop hard drive has six components: the head actuator, read/write actuator arm, read/write head, spindle, and platter. On the back of a hard drive is a circuit board called the disk controller.

在上面的图片中可以看出,台式机硬盘有六个组成部分:头致动器,读/写促动臂,读/写磁头,主轴和磁盘。在硬盘驱动器的背面一个称为磁盘控制器的电路板。

How is data read and stored on a hard drive? 

数据是如何读取和存储在硬盘上吗?

Data sent to and from the hard drive is interpreted by the disk controller, which tells the hard drive what to do and how to move the components within the drive. When the operating system needs to read or write information, it examines the hard drives File Allocation Table (FAT) to determine file location and available areas. Once this has been determined, the disk controller instructs the actuator to move the read/write arm and align the read/write head. Because files are often scattered throughout the platter, the head will often need to move to several different locations to access all information.

All information stored on a traditional hard drive, like the above example, is done magnetically. After completing the above steps, if the computer needs to read information from the hard drive it would read the magnetic polarities on the platter. One side of the magnetic polarity is 0 and the other is 1, reading this as binary data the computer can understand what the data is on the platter. For the computer to write information to the platter, the read/write head aligns the magnetic polarities, writing 0's and 1's that can be read later.

发送的数据和从硬盘驱动器,硬盘驱动器做什么和如何移动的组件,驱动器内的磁盘控制器,它告诉解释。当操作系统需要读取或写入信息时,它会检查硬盘驱动器的文件分配表(FAT),以确定文件的位置和可用区域。一旦这已经确定时,磁盘控制器指示的致动器移动的读/写臂和对齐的读/写头。因为文件通常分散在整个盘子里,头部会经常需要移动几个不同的地点访问所有信息。

传统的硬盘驱动器上存储的所有信息,如上面的例子中,磁性。完成上述步骤后,如果计算机需要从硬盘驱动器读取信息,它会读取盘片上的磁场极性。一侧的磁场极性为0,另一方为1,读取此作为二进制数据的计算机可以理解的,在盘片上的数据是什么。对于计算机将信息写入到盘片上,读/写头对齐,写0和1的后面,可以读出的磁场极性。




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2012年11月13日星期二

VirtualBox a virtualization product for enterprise


VirtualBox

VirtualBox is a powerful x86 and AMD64/Intel64 virtualization product for enterprise as well as home use. Not only is VirtualBox an extremely feature rich, high performance product for enterprise customers, it is also the only professional solution that is freely available as Open Source Software under the terms of the GNU General Public License (GPL) version 2. See "About VirtualBox" for an introduction.

Presently, VirtualBox runs on Windows, Linux, Macintosh, and Solaris hosts and supports a large number of guest operating systems including but not limited to Windows (NT 4.0, 2000, XP, Server 2003, Vista, Windows 7), DOS/Windows 3.x, Linux (2.4 and 2.6), Solaris and OpenSolaris, OS/2, and OpenBSD.

VirtualBox is being actively developed with frequent releases and has an ever growing list of features, supported guest operating systems and platforms it runs on. VirtualBox is a community effort backed by a dedicated company: everyone is encouraged to contribute while Oracle ensures the product always meets professional quality criteria.


VirtualBox是一个强大的x86和AMD64/Intel64的虚拟化产品,为企业和家庭使用。不仅是VirtualBox的一个功能极为丰富,高性能的产品,为企业客户,它也是唯一的专业解决方案,作为开源软件是免费提供的条款下的GNU通用公共许可证(GPL)版本2。请参阅“关于VirtualBox的”作一介绍。

目前,VirtualBox在Windows,Linux,Macintosh电脑,和Solaris主机上运行,并支持大量的客户操作系统,包括但不限于Windows(NT 4.0,2000,XP,Server 2003中,Vista中,Windows 7中),DOS/ Windows的3 X操作系统,Linux(2.4和2.6),OS / 2,Solaris和OpenSolaris和OpenBSD。

VirtualBox是积极发展与频繁的发布,有越来越多的功能,支持的来宾操作系统和平台上运行。 VirtualBox是一个社会的努力,由一个专门的公司支持,而Oracle可确保产品始终符合专业质量标准,鼓励每个人做出贡献。

Perview / 预展


VirtualBox for Linux/UNIX. Within VirtualBox Windows XP is running.










VirtualBox for Mac OS X. Within VirtualBox Windows 7 is running.












VirtualBox for Windows. Within VirtualBox Ubuntu 10.10 is running.












DOWNLOAD / 下载




In ubuntu just login to software center and type in VirtualBox in search bar 
在ubuntu中,只需登录软件中心在搜索栏填上VirtualBox



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2012年11月10日星期六

Install Ubuntu 12.10 / 安装Ubuntu 12.10


Using a USB drive / 使用U盘安装


Most newer computers can boot from USB. You should see a welcome screen prompting you to choose your language and giving you the option to install Ubuntu or try it from the CD.

If your computer doesn’t automatically do so, you might need to press the F12 key to bring up the boot menu, but be careful not to hold it down - that can cause an error message.

大多数较新的计算机可以从USB启动。您应该会看到一个欢迎屏幕,提示你选择你的语言,并让您选择安装Ubuntu或尝试从CD。

如果您的电脑不会自动这样做,你可能需要按F12键调出引导菜单,但要小心,不要按住不放 - 这可能会导致错误消息。


Prepare to install Ubuntu / 准备安装Ubuntu


  • We recommend you plug your computer into a power source
  • You should also make sure you have enough space on your computer to install Ubuntu
  • We advise you to select Download updates while installing and Install this third-party software now
  • You should also stay connected to the internet so you can get the latest updates while you install Ubuntu
  • If you’re not connected to the internet, we’ll help you set up wireless at the next step

  • 我们建议您插入您的电脑插入电源
  • 您还应该确保你有足够的空间在您的电脑上安装Ubuntu
  • 我们建议您选择下载更新安装时和安装这个第三方软件现在
  • 当你安装Ubuntu你也应该保持连接到互联网,这样你就可以得到最新的更新。
  • 如果你没有连接到互联网,我们将帮助您设置无线网络的下一个步骤

Set up wireless / 连接无线网络


If you are not connected to the internet, you will be asked to select a wireless network, if available. We advise you to connect during the installation so we can ensure your machine is up to date. So, if you set up your wireless network at this point, it’s worth then clicking the Back button to go back to the last screen (Preparing to install Ubuntu) and ticking the box marked ’Download updates while installing’.

如果您没有连接到互联网,我们建议您在安装过程中选择一个无线网络,如果有的话。所以我们可以确保您的计算机是最新的连接。因此,如果您设置您的无线网络,在这一点上,它的价值,然后点击“返回”按钮,返回到最后一个屏幕(准备安装Ubuntu)和滴答框标记为“下载更新,同时安装”。


Allocate drive space / 分配驱动器空间


Use the checkboxes to choose whether you’d like to Install Ubuntu alongside another operating system, delete your existing operating system and replace it with Ubuntu, or – if you’re an advanced user – choose the ’Something else’ option

使用复选框选择是否要到另一个操作系统一起安装Ubuntu,删除现有的作业系统,取而代之的是Ubuntu,或者 - 如果你是高级用户 - 选择'别的东西'选项


Begin the installation / 开始安装


Depending on your previous selections, you can now verify that you have chosen the way in which you would like to install Ubuntu. The installation process will begin when you click the Install Now button.

Ubuntu needs about 4.5 GB to install, so add a few extra GB to allow for your files.

Not sure about this step? Windows users can use the Windows installer, which will install and uninstall Ubuntu in the same way as any other Windows application. It’s simpler and completely safe.

根据您先前的选择,你现在可以验证您所选择的方式,你想安装Ubuntu。安装过程将开始,当您单击“立即安装”按钮。

Ubuntu的安装需要约4.5 GB,因此添加了一些额外的GB,让您的文件。

不知道这一步? Windows用户可以使用Windows安装程序,安装和卸载Ubuntu在任何其他Windows应用程序相同的方式。它的简单和完全安全的。


Select your location / 选择你的所在地点


If you are connected to the internet, this should be done automatically. Check your location is correct and click ’Forward’ to proceed. If you’re unsure of your time zone, type the name of the town you’re in or click on the map and we’ll help you find it.

如果您已连接到互联网,这应该是自动完成的。您的位置是正确的,然后点击“前进”进行。如果你不确定你的时区,输入你在的城市的名称,或在地图上点击,我们会帮您找到它。


Select your preferred keyboard layout / 选择您喜欢的键盘布局


Click on the language option you need. If you're not sure, click the ’Detect Keyboard Layout’ button for help.

点击你需要的语言选项。如果你不知道,单击“检测键盘布局”按钮寻求帮助。


Enter your login and password details / 填上你的个人资料和密码


The best choice for automatic login, so after each login no need required password to logon.

最好选择自动登录,免得以后每次登陆都要被要求密码。


Learn more about Ubuntu while the system installs…/ 系统安装时了解更多关于Ubuntu...

…or make a cup of tea! 

....或泡一杯茶!


That’s it. / 就是这样。


All that’s left is to restart your computer and start enjoying Ubuntu!

剩下的就是重新启动您的计算机,并开始享受Ubuntu的!







Download Ubuntu for your desktop / 为你的电脑下载Ubuntu

You can choose between two options when you download Ubuntu for a desktop PC. Ubuntu 12.10 gives you all the latest features, while Ubuntu 12.04.1 LTS comes with extended support.

您可以在两个选项之间进行选择,当你下载Ubuntu的桌面​​PC。 Ubuntu的12.10为您提供所有最新的功能,而Ubuntu12.04.1 LTS的扩展支持。











Create a bootable USB stick For Ubuntu OS / 创建Ubuntu可启动的USB棒


To run Ubuntu from a USB stick, the first thing you need to do is insert a USB stick with at least 2GB of free space into your PC.

The easiest way to put Ubuntu onto your stick is to use the USB installer provided at pendrivelinux.com. You’ll need to download and install and follow the instructions.


从USB记忆棒上运行Ubuntu,你需要做的第一件事情是一个USB记忆棒插入到您的PC,至少2GB的可用空间。

最简单的方法把Ubuntu到您的USB随身碟,使用USB安装程序提供pendrivelinux.com。你需要下载并安装,然后按照说明。

Download Pen Drive Linux's USB Installer

1.Select Ubuntu Desktop Edition from the dropdown list.
   从下拉列表中,选择“Ubuntu桌面版。

2.Click 'Browse' and open the downloaded ISO file.
   点击“浏览”,打开下载的ISO文件。



3. Choose the USB drive and click 'Create'.
   选择USB驱动器,然后单击“创建”。










2012年11月6日星期二

The Real Iphone 5 / 真正的Iphone5



The Ipone 5





First Style
第一款


Second Style
第二款





Third Style
第三款







Fourth Style
第四款







.


Fifth Style
第五款






Ha ha... so after your compare which one ipone5 you gonna to buy ??

哈哈。。。 看完比较以后你打算买哪一部Ipnone5 呢??

2012年11月4日星期日

iPHONE VIDEO CONVERTER iPHONE 视频转换器



ENCODEHD Profile EncodeHD 简介


EncodeHD is a an application to re-encode all types of video files for use on your home media player or on-the-go device. It aims to provide a simple interface with no fuss.

EncodeHD uses a number of open-source tools:

  • FFmpeg
  • Atomic Parsley
  • MP4Box from the GPAC Project
In EncodeHD you can convert your video to any mobile device video format ,example: PSP ,IPHONE ,BLACKBERRY HAND PHONE ,XBOX 360 ,APPLE TV and more. It will complete in just simply one click .

Before you using the encodeHD your computer must install the microsoft Framework 2.0 to support it

EncodeHD is The Green Software, so no need to do install it mobility just click and use. Click The EncodeHD to starting use.



EncodeHD是一个应用程序重新编码所有类型的视频文件,为您的家庭媒体播放器或在去设备上使用。它的目的是提供一个简单的界面,没有什么大惊小怪的。

EncodeHD使用了大量的开源工具:

  • FFmpeg
  • Atomic Parsley
  • MP4Box from the GPAC Project
在EncodeHD,您可以将您的任何移动设备的视频格式,例如:PSP,IPHONE,黑莓手机绳,XBOX 360,苹果电视和更多的视频。它只是简单的一次点击就可以完成。

在您使用的是encodeHD您的电脑必须安装Microsoft Framework 2.0的以便作为支持作业

EncodeHD是绿色软件,所以没有必要安装它是流动性软件。单击“EncodeHD开始使用。



Microsoft Frame Work 2.0 X86 For 32bit windows             Download
Microsoft Frame Work 2.0 X64 For 64bit windows             Download

EncodeHD Software Sharing                                              Download

Note : For EncodeHD download click the file and choose download at File list

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The New Powerful Cpu with Ivy Bridge. 新的Ivy Bridge强大的CPU

The intel ivy bridge cpu is starting using number 3 for header example i3-3220/ i5-3450/ i7-3770k

The 22nm-based Ivy Bridge processor is considerably smaller than its predecessor. It has nearly 400 million more transistors yet is about 25 percent smaller. What’s more interesting, however, is how much real estate is dedicated to each task on the new Ivy Bridge vs. Sandy Bridge. These die shots (not to scale) show that the almost 2x performance bump in graphics comes at the price of die space. Intel, however, discounts any criticism regarding how much emphasis it placed on graphics over x86 functionality and says just because it looks like more space was expended on graphics doesn’t mean it’s more important.


英特尔Ivy Bridge的CPU开始使用3号头的例子酷睿i3-3220 /酷睿i5-3450 /酷睿i7-3770k

基于22纳米Ivy Bridge处理器比它的前身是相当小的。它有近400万的晶体管是小约25%。然而,更有趣的是多少,房地产是专门为每个任务在新的Ivy Bridge的与Sandy Bridge的。这些模拍摄(不按比例)显示,几乎2倍的性能提升,在图形来自于模空间的价格。然而,英特尔的折扣任何批评意见,它放置在图形的重视程度超过x86功能和说,只是因为它看起来像图形花费更多的空间,并不意味着它更重要的。

Sandy Bridge


Ivy Bridge



Compatibility   兼容性


We’ve long railed against Intel for releasing new sockets with new CPUs (remember the short-lived Socket LGA1156 and Socket 423 and numerous LGA775 versions?), but the company has stepped up to the plate for the Sandy Bridge-to-Ivy Bridge transition. As Intel promised, most LGA1155 boards will support Ivy Bridge procs if the firmware and BIOS are updated to support the chip by the board maker. However, not all chipsets will make the Ivy Bridge cut. Intel has intentionally left out support for the business chipsets Q65, Q67, and B65 while supporting consumer H61, H67, P67, and Z68. Why leave some out? Intel believes the day of an IT shop getting down and dirty and upgrading processors in an office-drone PC are long gone, so there’s just no reason to expend the resources on unnecessary support. Besides getting the latest core technology from Intel, switching to Ivy Bridge on older 6-series boards should also give you PCIe 3.0 support on some slots. 

我们早就抨击英特尔推出新的套接字与新的CPU(还记得短命的插槽LGA1156和Socket423和众多的LGA775版本?),但该公司的Sandy Bridge,Ivy Bridge的加强板过渡。作为英特尔的承诺,最LGA1155主板将支持Ivy Bridge的特效,如果固件和BIOS更新,以支持芯片的电路板制造商。然而,并非所有的芯片组将做的Ivy Bridge切断。英特尔有意冷落业务芯片组Q65,Q67和B65的支持,同时支持消费者H61,H67,P67,Z68。为什么要离开了吗?英特尔认为,当天的IT购物越来越脏,升级处理器在办公室无人驾驶飞机PC日子已经一去不复返了,所以没有理由花费的资源上不必要的支持。除了英特尔最新的核心技术,从旧的6系列主板,切换到Ivy Bridge的也应该给你一些插槽的PCIe 3.0的支持。

World’s First Chip with ‘3D’ Transistors  世界上第一个'3 D'晶片的电晶体


We’ve long dubbed Intel the “Master of the Fab.” The company’s prowess in chip fabrication is the envy of the world. Yeah, there was that little thing with the Pentium 4, which hit the process wall like a freight train, but for the most part, Intel’s mastery of chip fabrication has always made its new CPUs a tour de force of technology that makes you wonder if the company doesn’t have a crashed flying saucer hidden at 2200 Mission College Boulevard.

With Ivy Bridge, Intel again amazes with the world’s first use of tri-gate, or 3D, transistors. Also called finFETs, for fin field-effect transistors, the 3D transistors literally rise up off of the die to dramatically reduce power consumption while increasing performance. 

In a traditional planar transistor, current flows on a flat surface like a river. A gate, which ostensibly controls that flow, lies across the top of that river with contact only along a small surface. With a finFET, or 3D tri-gate, the flow of power spans a fin that juts from the surface. Instead of just contacting the surface along one dimension, the gate encircles it and makes contact on three sides.


我们早就被称为英特尔的Fab“大师”该公司在芯片制造的实力是全世界羡慕的对象。是啊,有那个小东西的奔腾4,它打的过程墙壁像一列货运火车,但在大多数情况下,英特尔掌握芯片制造一直由它的新的CPU一游德力科技,让你不知道,如果该公司没有在2200使命学院大道隐藏坠毁的飞碟。

随着Ivy Bridge的英特尔再次惊讶与世界上首次使用三栅极,或3D晶体管。也被称为FinFET元件,鳍式场效晶体管,三维晶体管从字面上上升关闭的模具,在提高性能的同时,显着降低功耗。

在传统的平面型晶体管,电流流过,像一条河流,在一个平面上。一个门,表面上控制流量,横跨该河的顶部,只能沿着一个小面的接触。有了一个的finFET,或3D三栅极的电源时,流程跨越从该表面伸出的翅片。而不是仅仅沿一维的表面接触,栅极包围它,三面接触。






2012年11月3日星期六

What Is OS (Operating System) ? 什么是OS

An operating system or OS is a software program that enables the computer hardware to communicate and operate with the computer software. Without a computer operating system, a computer and software programs would be useless.


Examples of computer operating systems


  • Microsoft Windows 8 - PC And Notebook compatible operating system. Microsoft Windows is the most commonly found and used operating system.
  • Apple MacOS - Apple computer operating system. The only Apple computer operating system.
  • Ubuntu Linux - A popular variant of Linux used with PC and IBM compatible computers.
  • Google Android - operating system used with Android compatible phones.
  • iOS - Operating system used with the Apple iPhone.




操作系统或操作系统是一个软件程序,使计算机硬件,通信和与计算机软件。如果没有一个计算机操作系统,计算机和软件程序将是无用的。


电脑操作系统的例子


  • 微软Windows8 - PC和手提电脑兼容的操作系统。微软Windows是最常见的操作系统,使用率也是全球最多的。
  • 苹果公司的MacOS - 苹果电脑操作系统。唯一的苹果电脑操作系统。
  • Ubuntu Linux - 使用Linux的操作系统PC和IBM兼容电脑 - 一种流行的变种。
  • 谷歌Android - 使用的操作系统与Android兼容的手机。
  • IOS - 苹果公司的iPhone使用的操作系统。


2012年11月2日星期五

What is RAID? 什么是RAID?

RAID

RAID stands for Redundant Array of Inexpensive (Independent) Disks

In most situations you will be using one of the following four levels of RAIDs.

  • RAID 0
  • RAID 1
  • RAID 5
  • RAID 10 (also known as RAID 1+0)
This article explains the main difference between these raid levels along with an easy to understand diagram.

In all the diagrams mentioned below:
  • A, B, C, D, E and F – represents blocks
  • p1, p2, and p3 – represents parity.

RAID LEVEL 0

Following are the key points to remember for RAID level 0.

  • Minimum 2 disks.
  • Excellent performance ( as blocks are striped ).
  • No redundancy ( no mirror, no parity ).
  • Don’t use this for any critical system.




RAID LEVEL 1

Following are the key points to remember for RAID level 1.

  • Minimum 2 disks.
  • Good performance ( no striping. no parity ).
  • Excellent redundancy ( as blocks are mirrored ).




RAID LEVEL 5

Following are the key points to remember for RAID level 5.

  • Minimum 3 disks.
  • Good performance ( as blocks are striped ).
  • Good redundancy ( distributed parity ).
  • Best cost effective option providing both performance and redundancy. Use this for DB that is heavily read oriented. Write operations will be slow.



RAID LEVEL 10 (1+0)
Following are the key points to remember for RAID level 10.

  • Minimum 4 disks.
  • This is also called as “stripe of mirrors”
  • Excellent redundancy ( as blocks are mirrored )
  • Excellent performance ( as blocks are striped )
  • If you can afford the dollar, this is the BEST option for any mission critical applications (especially databases).





RAID


RAID来至Redundant Array of Inexpensive (Independent) Disks

在大多数情况下,您将使用以下四个级别的RAID。

  • RAID 0
  • RAID 1
  • RAID 5
  • RAID 10 (also known as RAID 1+0)
这篇文章解释了这些RAID级别之间的主要区别,以及一个易于理解的图表。

在下面提及的所有图:
  • A,B,C,D,E和F - 代表块/资料
  • P1,P2,和p3 - 代表奇偶校验/资料结合

RAID LEVEL 0


下面是一些关键点要记住的RAID级别为0。

  • 最少2个磁盘。
  • 优异的性能(如块条带化)。
  • 不再备有冗余(无反光镜,无奇偶校验)。
  • 不要使用任何重要的系统。




RAID LEVEL 1


以下是关键点要记住的RAID级别1。


  • 最少2个磁盘。
  • 表现良好(没有条纹,无奇偶校验)。
  • 出色的冗余(以块的镜像)。




RAID LEVEL 5


下面是一些关键点要记住的RAID5级。


  • 最少3个磁盘。
  • 表现良好(块条带化)。
  • 良好的冗余性(分布式奇偶校验)。
  • 最佳成本效益的选择,同时提供性能和冗余。使用此DB,大量阅读导向。写操作将是缓慢的。



RAID LEVEL 10 (1+0)

下面是一些关键点要记住的RAID级别10。
  • 最少4个磁盘。
  • 这也被称为“条纹镜”
  • 出色的冗余(如块镜像)
  • 出色的性能(块条带化)
  • 如果你能负担得起的美元,这是任何关键任务的应用程序(尤其是数据库)的最佳选择。

Make a Cat5 / Ethernet / RJ45 / Network Cable 图教网线制作

CAT-5E/NETWORKCABLE Wiring Diagram & Crossover Cable Diagram

CAT-5E/网线接线图和交叉线图

The following CAT5 wiring diagram and crossover cable diagram will teach an installer how to correctly assemble a CAT-5 cable RJ45 connectors for regular network cables as well as crossover cables. The first set of instructions are for standard network patch cables (EIA/TIA-568B). 

以下CAT5布线图和交叉线图,安装程序会教如何正确组装的CAT-5电缆的RJ45连接器,用于常规的网络电缆和交叉电缆。第一组的指令为标准的网络的补丁电缆(EIA/TIA-568B)。

  • Using an cat5 cutter and crimping tool, strip about 1/3"of the out jacket of the cat-5 cable.  Be sure not to strip or damage any of the pairs of inner cables.  使用CAT5刀和压接工具,带出的CAT-5电缆外套的约1/3“。确保不剥夺或损害任何对内部电缆。

  • Assemble the pairs of wires in the following order for network cables (EIA standard / EIA-568 B).   组装线对按以下顺序网线(EIA标准/ EIA-568 B)。

  • Insert the wires into the RJ45 jack as seen below.  Be sure to keep the wires in the correct order.   如下图所示,将导线插入RJ45插孔。以正确的顺序是一定要保持的电线。

  • Insert the RJ45 connector into the crimping tool (again carefully make sure the wires stay inserted in the correct order). Crimp down firmly on the crimping tool to permanently attach the RJ45 to the CAT5 cable.   插入RJ45连接器压接工具(再仔细,确保以正确的顺序保持插入的电线)。用力向下压接工具压接永久连接的RJ45 CAT5电缆。

Crossover Cable Diagram

To create a crossover cable with cat-5 cable follow the same instructions as above for CAT-5 wiring except when you get to step #2, use the below crossover cable diagram:
要创建一个跨接电缆CAT-5电缆CAT-5布线除上述相同的指令,当你得到第2步,使用下面的交叉网线图: