RAID and RAS

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RAID and RAS

• CIS 485
• SAU
• SUJA
• SOLOMON
• TIFFANY
• STACIE

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WHY DO WE NEED RAID?

• Redundant array of independent disk
• RAID employs the technique of striping
• Allow overlapped disk I/O across drives
• To access information from several disks at the
  same time

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Levels of fault tolerance

• Level 1
• Level 2
• Level 3 -also called duplicating the server
• - One or more disk putting together
• -concatenation of several hard disk
• -RAID array drive

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Levels of RAID

• RAID 0
• RAID 1
• RAID 4
• RAID 5
• RAID 10

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RAID 0

• Data blocks are split based on stripe size

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RAID 1

• When one hard disk fails , all data is
  immediately available

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RAID 1 cont.

• Disk Duplexing

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RAID 4

• The controller calculates the parity bit, which
  is stored in a separate hard disk

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RAID 5

• RAID 5 is similar to RAID 4. it delivers a
  balanced throughput.

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RAID 10

• Combination of RAID 0 and 1.

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Requirements

• SCSI hard drives
• RAID Controller board
• RAID driver

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Installation procedure

• Pre Installation
• boot the server from the RAID software CDROM
• Create a system disk for the OS
• Turn off the sever
• Disconnect the server from power
• Remove the server cover

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Installation procedure cont.

• Zero-channel RAID controller board

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• Replace the riser board, with the RAID controller
  board in it
• Power on the server and press ltCtrlgt ltGgt

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Select the host drive type
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Set the bios boot order

• Set up the following boot order
• Removable Devices
• ATAPI CD-ROM Drive
• Hard Drive
• Intel (R) Boot Agent

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RAS

• What is RAS?

• RAS Remote Access Server
• The ability to get access to a computer or a
  network from a remote distance

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RAS Installation

• Windows NT Server Installation

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Cont.

• Install NetBEUI protocol

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Cont.

• TCP IP Address

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Cont.

• Add RAS Under Service

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RAS Configuration
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Configure the Network parameters
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adjust the Bindings of the network components
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Cont.
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Dailup-connection needs to be configured
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Configure the connection
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Cont.

• Basics Connection

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Cont.

• Server network protocol

ONLY TCP/IP,
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Cont.

• Connection Script

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Cont.

• Ready to connect the Internet

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Cont.

• Dialup Networking Monitor

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Work Cited

• www.gnesan.calstatela.edu
• www.sun.com
• www.wown.com/j_helmig/vpnrasin.htm