Feeds

Physical vs virtual: What's your poison?

Power management and VDI

  • alert
  • submit to reddit

Designing a Defense for Mobile Applications

Worse yet is load balancing your virtual machines across your hosts. The major virtualization players offer some neat software that can do this automatically for you, but I might as well ask the magic budget fairy for a Toughbook. It isn’t going to happen, and thus, I load-balance my VMs by hand. This creates interesting conflicts when trying to weigh load balancing against power management and even critical VM distribution.

As much I want to power down all non-essential systems when not in use, I also don’t want a single hardware failure taking out all of the production VMs responsible for the manufacturing equipment in a single go. I must also ensure that critical VMs have full LOM capabilities in case there is a problem with the host, and it needs to be repaired remotely. As not all of my servers have full LOM capabilities, this means being choosy about which hosts they live on.

Virtualization has its power management bonuses too. Overall, even with leaving the servers running 24/7, I am consuming less electricity than if all VMs were physical desktops or blade servers. With everything that is required for after-hours work confined to the datacenter, I can actually shut off entire segments of the network at night. Switches, phones, desktops, monitors, printers and all other forms of electronic gadgetry.

Still, it is interesting how much virtualization can complicate the life of a sysadmin. The “eggs in one basket” syndrome common with VDI has power management implications of its very own. Intel would love to come along and tell me that with their ridiculous new shiny servers, I could collapse thirty-two virtual hosts into six. They’d even be right; I’ve run the numbers, and right now I can run my entire network on six ridiculous servers. Eighteen months from now I could run it on three.

If I did that, however, I’d be sitting there praying every night that those three servers don’t blow a stick of RAM or lose a CPU fan, or that rodents of unusual size chose not to have a gnaw on cat6. For this reason, I feel I am actually better off with my older servers; there is a “sweet spot” past which I feel a host simply has too many guests for comfort.

These problems laid bare, my next article will focus on what I’ve done to overcome these issues. Some approaches are technological, while others are matters of policy and procedure. I don’t have access to the really awesome tools used to make virtualization really shine, so it will be an investigation into VDI power management with nothing but the bare basics to help you. ®

The Power of One eBook: Top reasons to choose HP BladeSystem

More from The Register

next story
Apple fanbois SCREAM as update BRICKS their Macbook Airs
Ragegasm spills over as firmware upgrade kills machines
Auntie remains MYSTIFIED by that weekend BBC iPlayer and website outage
Still doing 'forensics' on the caching layer – Beeb digi wonk
Attack of the clones: Oracle's latest Red Hat Linux lookalike arrives
Oracle's Linux boss says Larry's Linux isn't just for Oracle apps anymore
THUD! WD plonks down SIX TERABYTE 'consumer NAS' fatboy
Now that's a LOT of porn or pirated movies. Or, you know, other consumer stuff
EU's top data cops to meet Google, Microsoft et al over 'right to be forgotten'
Plan to hammer out 'coherent' guidelines. Good luck chaps!
US judge: YES, cops or feds so can slurp an ENTIRE Gmail account
Crooks don't have folders labelled 'drug records', opines NY beak
Manic malware Mayhem spreads through Linux, FreeBSD web servers
And how Google could cripple infection rate in a second
prev story

Whitepapers

Designing a Defense for Mobile Applications
Learn about the various considerations for defending mobile applications - from the application architecture itself to the myriad testing technologies.
How modern custom applications can spur business growth
Learn how to create, deploy and manage custom applications without consuming or expanding the need for scarce, expensive IT resources.
Reducing security risks from open source software
Follow a few strategies and your organization can gain the full benefits of open source and the cloud without compromising the security of your applications.
Boost IT visibility and business value
How building a great service catalog relieves pressure points and demonstrates the value of IT service management.
Consolidation: the foundation for IT and business transformation
In this whitepaper learn how effective consolidation of IT and business resources can enable multiple, meaningful business benefits.