Author: omid.koushki

vSphere 5.5 new feutures

omid.koushki

Last night , I was looking for an article that i saw an article on virtualization .  I read this article . it will be useful for you and other friends

I ‘m going to run in this version soon. And the complete results will be announced . for the full list please take a look at VMware’s document.

1. vCenter Server appliance gets bigger

For a while now VMware has offered a Linux based appliance version of the Windows based, full blown vCenter Server, but in the past the appliance’s database pretty much limited its use to the SMB space. With 5.5 the vCenter Server Appliance can now handle up to 500 hosts and 5000 Virtual Machines. For my environment I’ll still hold out until it has the capability to at least host the application portion of Update Manager (as opposed to the patch repository), but I can definitely see its use in environments with multiple vCenter servers.   Continue reading “vSphere 5.5 new feutures” →

10 Things to Know About Server Virtualization

omid.koushki

This is a guest post from David Malmborg who is working with Dell. Here are the 10 things to know about server virtualization and why your company should think about it. Recently I have shared my personal working experience on advantages of server virtualization.  The below points are similar to earlier article but with different view and explanation.  [source article]

1. Server Virtualization Closes the Gap Seen in Traditional Server Model

Traditional server model uses one piece of hardware for each server. So it will require 75 physical servers to create 75 database, application, and web servers. With server virtualization, it will only require one server and a Network Attached Storage (NAS) device to create 75 or more servers. The power of virtualization technology is enormous and theoretically it can create an endless number of virtual servers. Virtual server technology continues to improve in both functionality and scalability.   Continue reading “10 Things to Know About Server Virtualization” →

7 Advantages of Cloud Computing

omid.koushki

“Cloud computing has changed the rules of the game between the companies expanding their services using cloud computing.”

 In recent years cloud computing services has growing continuously. Google has been one of the strongest company have providing a large range of cloud services, spearheaded Gmail, and a long list of solutions around covering virtually all areas (Maps, Reader, News, storage etc.).

Microsoft , the other large consumer market, has also invested heavily in the full range of services and providing cloud computing services. Using Windows Azure, you can rapidly configure, organize and can manage applications very easily, you can run your sites, virtual machines, mobile services and other cloud services using Windows Azure.    Continue reading “7 Advantages of Cloud Computing” →

PPDIOO as the network life cycke

omid.koushki

What is Cisco PPDIOO?

PPDIOO (Prepare, Plan, Design, Implement, Operate, and Optimize) is the network life cycle that is defined by Cisco . PPDIOO has the six phases or steps for designing a network and these design phases are as following:

  • Prepare
  • Plan
  • Design
  • Implement
  • Operate
  • Optimize

Cisco PPIDOO

 source article 

Slow logging into domain

omid.koushki

When you are facing slow logons into domain and you also get events 1030 and 1006 you need to look into your network. By default Kerberos uses UDP packets to communicate. You need to force Kerberos to use TCP instead of UDP by changing registry key:

HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\Lsa\ Kerberos\Parameters

If it doesn’t exists just create it :)

Create DWORD key called MaxPacketSize and set it to value 1.

For more infor there is official KB  http://support.microsoft.com/kb/244474/en-us

The Philosophy of System Administration

omid.koushki

Although the specifics of being a system administrator may change from platform to platform, there are underlying themes that do not. These themes make up the philosophy of system administration.

 The themes are:

Enabling Firewall audit logging in windows

omid.koushki

In this article you can see how to enable audit logging for Windows Firewall with Advanced Security.

Windows Firewall with Advanced Security can log firewall activity such as dropped packets or successful connections. By default the firewall log is: %windir%\system32\logfiles\firewall\pfirewall.log

You can configure firewall logging by using Group Policy if desired. But what if you want to collect more detailed logging of firewall activity such as kernel mode connections/drops and other filtering activity? You can do this by enabling Windows Filtering Platform (WFP) audit logging as follows:

Auditpol /set /category:”System” /SubCategory:”Filtering Platform Packet Drop” /success:enable /failure:enable

Auditpol /set /category:”System” /SubCategory:”Filtering Platform Connection” /success:enable /failure:enable

Note that this form of logging may be very verbose, so be careful when enabling this on a computer in your production environment.

Optimizing vSphere 5 Performance

omid.koushki

A few days ago I read an article that was interesting.May be faced with reduced performance When you run the virtualization platform.

Here I give you some tips in this regard:

Optimizing vSphere Performance: Why and How

1. Use capacity analysis tools
2. Right-size virtual machines
3. Replace your hardware
4. Utilize Storage I/O Control (SIOC) and Storage DRS (SDRS)
5. Reduce VM snapshots
6. Consider SSD
7. Utilize Distributed Resource Scheduler (DRS)
8. Run the latest version of vSphere
9. Use the latest VM virtual hardware version
10. Install VMware Tools in all virtual machines

  

tip in server 2012

omid.koushki

Unfortunately there is a problem when you try to add .Net Framework 3.51 to Windows Server 2012 using Server Manager!

In order to fix that issue and get .Net Framework 3.51 installed issue following command from Command Prompt:

dism /online /enable-feature /all /featurename:NetFX3 /source:x:\sources\sxs

 

In order to assign static IPv4 address to Windows Server 2012 Core using power shell use:

New-NetIPAddress -IPAddress 192.168.1.10 -InterfaceAlias “Ethernet” -DefaultGateway 192.168.1.1 -AddressFamily IPv4 -PrefixLength

vSphere 5.1 What’s New

omid.koushki

VMware announced a new version of VMware vSphere 5.1 at VMworld USA. I created a nice summup of all new features to give you nive clean overview

if you are going to upgrade vsphere 5.1 please read this links and notic changes them

 

vSphere 5.1 What’s New

System Center 2012 – VMM networking Poster

omid.koushki

I was surfing the web. I found a nice poste about virtualization and its infrastructure. I think it is interesting to see the poster.

The issue of networking in System Center Virtual Machine Manager 2012 SP1 is more complex and offers several features so it is classified first. Microsoft has now released a poster that summarizes the most important information.

This poster for Virtual Machine Manager Networking helps …

  • … In planning the networks with the use of VMM VM Networks, Logical Networks and Logical Switches with different configurations as …

    … When configuring networks in VMM by taking the necessary steps for Fabric Administrator and / or tenant administrator are described;

    • VLAN-based configuration;
    • No insulation;
    • Network Virtualization;
    • Use external networks;
    • No Virtual Networking.
  • To understand the … Network Object Model and the corresponding links between the objects;
  • .. To understand how VMM can be extended with 3rd party plug-ins.

Download

VMM_Networking_Poster.pdf (1.2 MB)

Compare Hyperv 3.0 & Vsphere 5.0

omid.koushki

1) Scalablity

To start the comparison, we would choose scalability and  config maximums as these are the important aspects to look for while choosing the platform for your cloud.

Microsoft Windows 2012 RC’s Hyper-V 3.0 seems to be promising on scalability than VMware vSphere 5.0. The maximum supported clustered nodes increased to 64 with increase in support of running VM’s i.e 4000 VM’s, more logical processors per host and more Physical RAM per host as compared to VMware. Continue reading “Compare Hyperv 3.0 & Vsphere 5.0” →

Integrate drivers into a WIM file with DISM

omid.koushki

1. Download and install WAIK

2.Mount the Image
Create folders “Images” and “mount” on c:\
BOOT.WIM=>
dism /mount-wim /WimFile:c:\Images\boot.wim /index:2 /MountDir:c:\mount

INSTALL.WIM=>
dism /mount-wim /WimFile:c:\Images\Install.wim /index:1 /MountDir:c:\mount
Continue reading “Integrate drivers into a WIM file with DISM” →

10 most powerful cloud companies

omid.koushki

Virtually every vendor has a cloud story to tell. But here are 10 companies that have distinguished themselves as the leaders in cloud computing, either by being first to market, by offering the broadest and deepest set of cloud services or by taking a leadership role in the cloud revolution. Other articles in this issue of Enterprise Cloud Services:

1. Amazon: The IaaS gold standard

The online retailer came out of nowhere in 2006 to offer up idle compute cycles as a service. Since then, it seems like there’s no market Amazon is unwilling to enter and no competitor it’s unwilling to take on. There’s the market setting Elastic Compute Cloud (EC2). If you’re a third-party provider of cloud services, that’s the platform you need to be compatible with. Over time, Amazon has added multiple cloud storage offerings and is moving into the PaaS market. The company is also selling tablets (Kindle Fire) and challenging Apple and Google in the cloud-based music arena. Continue reading “10 most powerful cloud companies” →

Read-Only Domain Controller (RODC)

omid.koushki

Windows Server 2008: Read-Only Domain Controller (RODC)

A Read-Only Domain Controller (RODC) is a new type of domain controller in Windows Server 2008. Its main purpose is to improve security in office branches. In this post, I summarize the functionality of RODC.

In office branches, it is often not easy to provide sufficient physical security for servers. It is not a big deal to manipulate a Windows system if you can get physical access to it. Since Domain controllers store security sensitive data, they are particularly endangered. RODCs can help with this problem in four ways:

RODC essentials Continue reading “Read-Only Domain Controller (RODC)” →

10 things about AD domain trusts

omid.koushki

Domain trusts can be complicated to administer, and it’s important to implement changes correctly the first time. Here are some key points to keep in mind to help ensure that your trusts are configured effectively with a minimum of headaches.

1: Determine what kind of trust you should use

Before deploying a domain trust, you should ensure that the type(s) used are correct for the tasks at hand. Consider the following dimensions of a trust: Continue reading “10 things about AD domain trusts” →

Active Directory Topology Diagrammer

omid.koushki

I need to design a plan for Active directory . in this way visio and Edarw are two software that help me .today i find a new software that automatically generate a diagram like as Visio !

The Microsoft Active Directory Topology Diagrammer reads an Active Directory configuration using LDAP, and then automatically generates a Visio diagram of your Active Directory and /or your Exchange Server topology.

The diagramms may include domains, sites, servers, organizational units, DFS-R, administrative groups, routing groups and connectors and can be changed manually in Visio if needed.

Download

Continue reading “Active Directory Topology Diagrammer” →