Category Archives: soft capping, R4HA
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.
Following a hockey puck can be challenging. It moves really fast and it’s not always obvious what the next player is going to do. Wayne Gretzky famously said: “Skate to where the puck is going; not where it’s been”. The same analogy can be applied in most sports: football quarterbacks throw to where the receiver is going to be; not where they are. Your monthly 4-Hour Rolling Average (and resulting MLC) is also a moving target.
By now, many shops are using soft caps and/or taking advantage of special pricing offerings from IBM such as Mobile and zNALC. These are excellent ideas — but, as all performance and capacity professionals know, reducing one 4HRA bottleneck only creates another.
IBM’s Country Multiplex Pricing (CMP) became available last October. This is arguably the most significant software pricing announcement from IBM in ten years. Virtually every mainframe shop with more than one CPC/CEC should be interested in this announcement.
But don’t think you can just move to CMP and immediately see lower software bills – if you don’t do it right, your annual costs could actually be higher. Whether you’re in finance, capacity planning or performance, you don’t need to be a ThruPut Manager user to get significant value from this webinar.
In our last post, we reviewed the Automated Capacity Management (ACM) feature of ThruPut Manager and its ability to control the rolling 4-hour average (R4HA) by constraining or deferring specified workloads as the R4HA approaches the soft cap limit. But you may prefer more granular control in order to more fully leverage the opportunity for MLC savings, or you may not prefer to put caps in place at all, but still wish to reduce demand and enjoy the resulting cost savings.
You know you need to reduce software costs wherever possible. Fine tuning of your batch can do this for you. IBM may recommend using a single LPAR group (Group Capacity soft cap limit) for all LPARS on a CPC; but, this implementation might not work for you on every CPC. You might have LPARs with products or applications that differ a great deal in CPU hourly usage rates from other LPARs. What you really want is to have all the control possible to ensure you strike the right balance between cost savings and performance. A brand new feature of ThruPut Manager can help.
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?
Many datacenters are enjoying the software savings provided by ThruPut Manager’s Automated Capacity Management (ACM) component, a safe and selective method to reduce MSU consumption and resulting MLC costs. Now, ACM introduces a significant enhancement – LPAR Sets.Monthly License Charges are implemented on a CPC basis, but each LPAR may contribute to the total in different ways with different software stacks, varying business requirements, or various MSU costs for each LPAR. We are now introducing LPAR Sets to give you more granular control over your batch workload.