Software-Defined Data Centers Might Cost Companies More Than They Save
storagedude writes "As more and more companies move to virtualized, or software-defined, data centers, cost savings might not be one of the benefits. Sure, utilization rates might go up as resources are pooled, but if the end result is that IT resources become easier for end users to access and provision, they might end up using more resources, not less. That's the view of Peder Ulander of Citrix, who cites the Jevons Paradox, a 150-year-old economic theory that arose from an observation about the relationship between coal efficiency and consumption. Making a resource easier to use leads to greater consumption, not less, says Ulander. As users can do more for themselves and don't have to wait for IT, they do more, so more gets used. The real gain, then, might be that more gets accomplished as IT becomes less of a bottleneck. It won't mean cost savings, but it could mean higher revenues."
GTFO.
'We are trying to prove ourselves wrong as quickly as possible, because only in that way can we find progress.' RPF
Because when people read the label and see that the food is lower calorie or "more healthy"; they eat a larger amount of the food because they feel less guilty due to it being "more healthy"; and the additional consumption more than offsets the decrease in calorie count of the "healthier food"
So eating lower calorie foods makes you less healthy....
Virtualization makes it easier to stand up a new "server." True.
This simplicity will lead to using more "servers." Granted.
But those virtual servers require far less hardware than the old physical servers. Many of these virtual servers are used only a small percentage of the time. Depending on the load, 10, 20, or even more servers can run on one physical piece of hardware.
So even if we use, say, five times more "servers" with virtualization, we will be using fewer physical units--fewer "resources."
In short, the math is not so simple.
Since engineers have always worked on efficiency so pretty much everything you use these days is more efficient that the equivalent item from 30 years ago. However people in the US use more energy per capita than they did 30 years ago.(So for example instead of 4 people in a family watching the same 25" TV during prime time each one of them has their own and or they watch it more. End result is the amount of energy used to watch TV is greater even though the actual TV uses less power.)
Did you know 80 to 90% of the moderators on slashdot wouldn't recognize a troll even if one dragged them under a bridge.
Jevon's paradox is valid, but only under specific economic assumptions.
It's only true so long as there is more demand for the resource, and it's only a problem when the resource has a cost attached. Essentially, it's true in a "scarcity" economy, but not true under "post scarcity".
We've achieved "post scarcity" for several resources already; for example, phone calls and computer time.
Phone calls used to be expensive and billed by the minute, but nowadays it's virtually free. Similarly, computer time used to be metered and charged - in college, the CPU time for each program run was deducted from your account. Nowadays people can have as much un-metered computer time as they want.
CPU time and phone service aren't literally free, but the cost is so small as to be negligible.
Despite this, we do not see infinite consumption. People have a certain level of need for a resource, and when that need is met they stop consuming more. Coupled with a declining population, there is no reason to expect infinite consumption.
Your company may be using more resources than it needs... but so what? Computer resources are remarkably cheap - so cheap, in fact, that it may be more effective to ignore the problem. Optimize the biggest expenses first: if that turns out to be IT resources, then take a closer look. Otherwise, just ignore it.
(For another example of post-scarcity, consider the Chinese "dollar stores" that have cropped up. The cost of goods is so small that the time and expense of price tags makes a big difference. This is almost post-scarcity of tangible goods.)
Work expands to fill the space given to it.
Give it no definable boundaries?
SpaceMonster: OOOOOOOH!!! *Wiggles fingers acquisitively*
Chas - The one, the only.
THANK GOD!!!
But everyone else is adopting agile, so if we choose to have longer architecture phase, we will fail to adapt to the evolving market, and lose out.
I suppose it's a tragedy of commons, with time-to-market as the abused resource.
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