Tag Archives: VWLC
Companies are more cost-focused than ever before. While some industries have always had narrow margins, every company is looking for cost-savings wherever possible. Soft-capping can be scary, but you still need to save money. So what do you do? The solution is LPAR sets.
Some sages, particularly in the distributed systems space, like to say that capacity planning isn’t necessary anymore. Hardware is cheaper and virtualization makes better use of resources. Besides, no one seems to know how to do it these days. But the sages are wrong!
Since the days when processor time was costly (and you input a job on punch cards), the CPU Busy metric has had intense focus. There are so many ways to look at the metric, all having vastly different meanings. Virtualization made it even more complicated. But for many in our field, this is still a very critical number. But is it the most important number?
A guest post by Denise P. Kalm – When BMC Software releases the results of its latest survey showing that 90% of the participants are confident in a long-term future for mainframes, you have to listen. Or more importantly, the management teams who keep trying to move off of it needs to read the report. While security and availability are frequently cited as important factors – who has hacked a mainframe lately – too often forgotten is the unequalled ability to manage costs on this platform.
Very often, with distributed systems, the cost is the cost; you pay for seat licenses or for the total capacity of the box or some other immutable metric. And let’s not forget the lower availability statistics, nor the fact that Wintel boxes are the biggest targets for hackers. But back to cost, because every systems programmer has had to become an active participant in managing and reducing costs. Which platform is the most flexible in terms of cost?
When moving batch workloads around to lower your R4HA, duplicate product peaks are a common challenge—and can cause their fair share of headaches. To remedy this issue, IBM recently announced a new pricing model, Country Multiplex Pricing (CMP). The new model is designed to give you greater flexibility to move and run workloads across your data centers in a single country with less financial impact than you’d experience by staying with your present VWLC model.
If you take advantage of IBM’s variable workload license charges (VWLC), you’re more than familiar with the challenges of keeping costs low. In all likelihood, due to the complexity of how the rolling-four-hour-average (R4HA) is calculated, you find out the good or bad news only after you get your bill. You probably have IMS, CICS, DB2 and more running in a variety of LPARs with demand fluctuating throughout the day. And even if you keep your eye on your monitors, looking at the online work may give you a false feeling of confidence about how well you’re managing.