Quick Reference Guide
Table Of Contents
- Contents
- About This Reference
- Checking Out Your Computer
- Setting Up and Getting Started
- Working safely and comfortably
- Preparing power connections
- Connecting to a broadband modem or network
- Connecting a dial-up modem
- Starting your computer
- Turning off your computer
- Restarting (rebooting) your computer
- Using the keyboard
- Using the mouse
- Adjusting the volume
- Configuring the audio jacks
- Installing a printer, scanner, or other device
- Setting up RAID
- Upgrading Your Computer
- Preventing static electricity discharge
- Opening the case
- Closing the case
- Adding or replacing memory
- Replacing the system battery
- Adding or replacing an optical disc drive
- Adding or replacing an optional diskette drive
- Adding or replacing the memory card reader
- Adding or replacing a harddrive
- Replacing the front fan
- Replacing the rear fan
- Replacing the power supply
- Replacing the heat sink and processor
- Replacing the I/O board
- Adding or replacing an expansion card
- Replacing the system board
- Maintaining Your Computer
- Troubleshooting
- Safety guidelines
- First steps
- Troubleshooting
- Add-in cards
- Audio
- CD or DVD drives
- DVD drives
- Ethernet
- File management
- Hard drive
- Internet
- Keyboard
- Media Center
- The Media Center video display looks bad on your TV
- You need to configure your Media Center computer to output to aTV
- You want to change display settings to get better TV or DVD image quality
- You want to know whether you can burn programs that were recorded with your Media Center computer...
- You want to know whether you can play recorded programs on other computers
- You want to know whether you can play recorded programs on your home DVD player
- You get a “Download Error” message when the Media Center tries to update the Program Guide:
- Memory
- Memory card reader
- Modem (cable or DSL)
- Modem (dial-up)
- Your modem does not dial or does not connect
- You cannot connect to the Internet
- Your 56K modem does not connect at 56K
- Your fax communications program only sends and receives faxes at 14,400bps when you have a 56K m...
- The modem is not recognized by your computer
- The modem is noisy when it dials and connects
- Monitor
- Mouse
- Networks
- Passwords
- Power
- Printer
- Sound
- Recovering your system
- Recovering pre-installed software and drivers
- Using Microsoft System Restore
- Recovering your system to its factory condition
- Recovering your system using the WindowsDVD
- Telephone support
- Legal Notices
- Index
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31
RAID for security
RAID 1 maintains a complete copy of a file set on each physical
hard drive in the array. Maintaining simultaneous, complete
copies of files across multiple hard drives is called mirroring.
If a drive fails, the mirrored drive takes over and acts as the
primary drive.
File reading performance (seek time) is increased using the
same methods that RAID 0 uses, although writing speed is the
same as if writing to a single hard drive.
Drawback
RAID 1 treats the entire array as a single drive with the storage
capacity of the smallest physical drive in the array. So if you
have two drives (300 GB and 250 GB) in a RAID 1 array, your
computer only recognizes a single drive with 250 GB total
capacity.
RAID for both: performance and security
RAID 5 uses striping (at the block level) with on-the-fly error
correction across all drives. Because of this error correction,
small file read/write errors can be quickly and automatically
fixed without a significant drop in system performance.
RAID 5 offers good performance and data redundancy. This
array preserves your files if a drive fails.
A
B
C
A
B
C
RAID 1
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