Archive for August, 2008

VCP certification getting most high pay?

Posted on August 27th, 2008 in Virtualization | 2 Comments »

Look at the this:

VCP

The VCP (VMware Certified Professional) certification getting the most high paid compare to other such as A+, CCEA, RHCE, RHCT, MCSE, MCP, MCA, and Server+.

Basically this is an average salary of jobs based on indeed.com
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Efficient Data Center – Virtualize & Consolidation

Posted on August 26th, 2008 in Data Center, Industry News, Virtualization | No Comments »

As many of us may know that there are some article talk about the High Efficiency Data Center. I would like to talk about 1 of the major point here which is Virtualize & Consolidation, since our site is more focus on Virtualization.

High Gas/Petrol price become an global issues, no matter which region or which country are you from, this had become and issue which drive the Operational Cost for a Data Center to keep alive from daily basis. In Malaysia, the goverment had recently increase the commercial eletricity for 26 %. Imagine that if you DC consume RM 30000.00 a mount from power perspective, you had to pay RM 37800.00 a month. that had been significant impact the entire IT budgets plus the operational cost. As IT always be the main driver for most business today, we may need to provide a highly efficient Data center solution which able to recover the ROI within the shortest period as possible. Virtualization & Consolidation had come to the point for this.

As if we compare the power consumption from major chip maker like AMD and Intel, the watts per processor had stack and remain the same for the last 3 generations at least. The only improvement they made was really the perfomance per watt. 6 cores and 8 cores had been down the road, I will be strongly encourage who had not adapt to virtualization need to start virtualize or prepare to virtualize 80% of thier production environment.

My environment currently had running the entire DR solution with VMware technology. In production, I do have more than 50 production VM which provide web hosting, middleware, file & print servers and etc. Imagine you had a tight budget with only 50k USD, how many of physical servers will you able to buy from there? and wat about the amount of power you need to absorb on monthly basis? That is the real cost as many of you may had not see the electric bill. For my case, my cost center had to paid for the power bill ourselve.
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Experience on VMware ESX 3.5 and ESX 3.5i

Posted on August 26th, 2008 in Virtualization | 1 Comment »

I had tested both environment with my test machine which is DELL Precesion Workstation with 2 x 2.0 Quad core, which had total of 17GB ECC memory loaded with 3 SATA disk contain more than 1TB local storage. Below is the comparison I had done during the test.

Installation – ESX 3.5i had advantages as the entire process is fast and simple. ESX 3.5 require more interaction as it looks similiar to Linux installation. I know the ESX 3.5 can be script and customize by using the ks.cfg which I had done previously for mass deployment. For comparison 1 to 1, ESX 3.5i is much more easier and faster.

Configuration – Basically I dun really find much different as I do manage this machine with my virtual center. The only different is the Linux connection and command no longer usable on ESX 3.5i. By the way, I read some artical to tweak around to make the SSH work on the 3.5i, but I will prefer to proceed with powershell or CLI if I do need to use command prompt.

Perfomance – ESX 3.5i had better through put. In my test, I created 3 VM which 2 of them running on Windows 2003 SP2 with 4GB memory and 4Vcpu, plus additional 1 VM with SUSE Linux. I did the same on ESX 3.5 too. The respond on the ESX 3.5i is much smooth and not lacking, as ESX 3.5 you will see some lacking from the console open on Virtual center.  Follow by file copy test, the VM on ESX 3.5i is slightly faster than ESX 3.5. just less than a minute faster which I tried to copy some file with 20GB. Beside these points, I had not found anything different.
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Xen 3.3.0 is available for download

Posted on August 26th, 2008 in Industry News, Virtualization, Xen | No Comments »

According to Heise Online, the new free XEN version 3.3.0 is now available for download.

Basically the new version come with 2.6.18 kernel version of Linux as the host system.

The Xen 3.3.0 features including:

  • Power management (P & C states) in the hypervisor
  • HVM emulation domains (qemu-on-minios) for better scalability, performance and security
  • PVGrub: boot PV kernels using real GRUB inside the PV domain
  • Better PV performance: domain lock removed from pagetable-update paths
  • Shadow3: optimisations to make this the best shadow pagetable algorithm yet, making HVM performance better than ever
  • Hardware Assisted Paging enhancements: 2MB page support for better TLB locality
  • CPUID feature levelling: allows safe domain migration across systems with different CPU models
  • PVSCSI drivers for SCSI access direct into PV guests
  • HVM framebuffer optimisations: scan for framebuffer updates more efficiently
  • Device passthrough enhancements
  • Full x86 real-mode emulation for HVM guests on Intel VT: supports a much wider range of legacy guest OSes
  • New qemu merge with upstream development
  • Many other changes in both x86 and IA64 ports

Download Xen 3.3 datasheet

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VMware ESX 3.5 Authentication Login Using Active Directory

Posted on August 26th, 2008 in Tips | 8 Comments »

If you look for VMware authentication login using Microsoft Active Directory, I’m sure you can easily found on any seach enginer but most of the documents slightly outdated which is based on VMware ESX 2.x.

The following article try to give better understanding about latest VMware ESX 3.5 authentication login using AD.

Use esxcfg-auth command – VMware ESX Server Network Management Utility

Login to VMware ESX host using SSH as root

Ping ad.malaysiavm.com to make sure you can reach AD server.

The esxcfg‐auth command includes options for configuring interoperability with several authentication providers. This note focuses on the options that are relevant to Active Directory:
esxcfg‐auth [ [ ‐‐enablead | ‐‐disablead ] [ ‐‐addomain= ] [‐‐addc= ]

Type man esxcfg-auth for more information.

–disableab
Reverts the changes required to authenticate the user against Active Directory.

–enablead
Sets up the Console OS to authenticate the user against an Active Directory server. addomain and addc are required with this option.

–addomain
Sets the domain against which the user is to be authenticated when authenticating against an Active Directory server.

–addc
Sets the domain controller against which the user’s password should be checked.

This enables Active Directory based user authentication in the ad.malaysiavm.com domain
with the domain controller dc01.ad.malaysiavm.com.

Basically the system will generate /etc/krb5.conf file as example below:

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