Showing posts with label Clustering. Show all posts
Showing posts with label Clustering. Show all posts

Wednesday, September 21, 2011

Windows Web Server 2008

Designed for hosting and deploying Web services and applications
For small to large companies that develop or deploy a single website.
Supports x86 and x64 computers
The limitation is it cannot be used to manage directory resources via hosting Active Directory.
It does not support the extra capabilities included in enterprise edition. There is no support for clustering, hot-add memory, fault tolerant memory sync or Meta Directory Services.

RAM
a max of 4GB for x86 processor
a max of 32GB for x64 prcoessor

Sunday, September 18, 2011

Windows Server 2008 Features

Server Manager
  • Enables the server administrator to manager to:
  • view network connection
  • configure a firewall
  • configure storage on a Windows 2008 Server
  • configure a multitude of server roles from basic server to advance server settings
  • add remove features
  • run diagnostics
  • manage storage and backups
  • configure network connection
Security
For security Windows 2008 uses NAP. Network Access Protection is an umbrella of security protection features that monitor and manage the server and its clients.


Clustering
a group servers of linked servers working together as a single solution. They can programmed to take over the load of the servers.
Its the ability to increase the access to server resources, and provide fail-safe services by linking two or more discrete computers of systems so they appear to function as one.
Clustering is used for
  • Testing
  • Migrate configuration settings
  • Quick configuration and troubleshooting
  • Storage configuration
  • Performance and reliability
  • Security

Enhanced Web Services
  • Comes with Internet Information Services (IIS)
  • Enhanced security
  • Easier application of patches
  • Easier for programmers to write and configure Web applications
  • Better management tools: IIS Manager

Windows Server Core

  • A Minimum server configuration
  • Advantages:
  • No GUI overhead
  • Less disk space and memory needed
  • Smaller attack surface
  • Interact with server via command line
  • Similar to UNIX/Linux Systems

Windows Power Shell
Command-line interface that offers a shell
Perform common administration tasks
Use cmdlets
130 command line-tools
Scripting language

Virtualization
  • Using Hyper-V
  • Capabilities:
  • Compatible with clustering
  • Able to handle up to a four-processor SMP computer
  • Can be used with Windows and Linux operating systems
  • Compatible with different types of disk storage methods
  • Enables fast migration from one computer to another
  • Can house 64-bit and 32-bit operating

Reliability
  • Kernel runs in privileged mode
  • Core programs; computer code of operating system
  • Extra level of security
  • Protected processes
  • Computer program or portion of program
  • Protects premature interruption
  • Management features:
  • Server Manager
  • Wizards
  • Windows Reliability and Performance Monitor



Multitasking
Ability to run two or more programs at the same time

Multithreading
Capability of programs written to run several program code blocks at the same time

Thursday, September 15, 2011

Windows Server 2008 Definitions

Symmetric multiprocessor (SMP)-
Symmetric multiprocessor (SMP) is applications use multiple CPUs to run jobs.

Clustering
-
Clustering is ability to increase the access to server resources and provide a fail-safe services by linking two or more discrete computers systems so they appear to function as though they are one.

Hot-add memory-
Ability to add RAM without shutting down

Hot-add processor-
Ability to add processor to an empty processor while the system is running.

Hot-replace processor-
Ability to replace processor in an SMP system without taking the system down.


Fault Tolerant Memory Sync-
The ability of memory to resynchronize after transient memory problems. This prevents interruptions.

Active Directory-
A database of computers, users, groups, shared printers, shared folders, and other network resources.


Client-
Accesses resources on another computer via a network or direct cable connection

Workstation
-
Has its own central processing unit (CPU)
Can be used as a stand-alone or network computer

Domain-
Grouping of network objects, such as computers, servers, and user accounts



Subsystem for UNIX-based Applications (SUA)-
This is how Windows Server 2008 support for UNIX and Linux clients
Its allows Unix/Linux to run scripts in a Windows Server


Multitasking
Ability to run two or more programs at the same time

Multithreading
Capability of programs written to run several program code blocks at the same time

Total Cost of Ownership (TCO) - full cost of owning a network, including hardware, software, training, maintenance and user support cost.