Value and Power of LinuxOne Emperor II

There is much value n the mainframe but it doesn’t become clear until you do a full TCO analysis. When you talk to an IBMer about the cost of a mainframe the conversation immediately shifts to TCO, usually in the form of how many x86 systems you would have to deploy to handle a comparable workload with similar quality of service.  The LinuxONE Emperor II, introduced in September, can beat those comparisons.

LinuxONE Emperor II

Proponents of x86 boast about the low acquisition cost of x86 systems. They are right if you are only thinking about a low initial acquisition cost. But you also have to think about the cost of software for each low-cost core you purchase, and for many enterprise workloads you will need to acquire a lot of cores. This is where costs can mount quickly.

As a result, software will likely become the highest TCO item because many software products are priced per core.  Often the amount charged for cores is determined by the server’s maximum number of physical cores, regardless of whether they actually are activated. In addition, some architectures require more cores per workload. Ouch! An inexpensive device suddenly becomes a pricy machine when all those cores are tallied and priced.

Finally, x86 to IBM Z core ratios differ per workload, but x86 almost invariably requires more cores than a z-based workload; remember, any LinuxONE is a Z System. For example, the same WebSphere workload on x86 that requires 10 – 12 cores may require only one IFL on the Z. The lesson here: whether you’re talking about system software or middleware, you have to consider the impact of software on TCO.

The Emperor II delivers stunning specs. The machine can be packed with up to 170 cores, as much as 32 TB of memory, and 160 PCIe slots. And it is flexible; use this capacity, for instance, to add more system resources—cores or memory—to service an existing Linux instance or clone more Linux instances. Think of it as scale-out capabilities on steroids, taking you far beyond what you can achieve in the x86 world and do it with just a few keystrokes. As IBM puts it, you might:

  • Dynamically add cores, memory, I/O adapters, devices, and network cards without disruption.
  • Grow horizontally by adding Linux instances or grow vertically by adding resources (memory, cores, slots) to existing Linux guests.
  • Provision for peak utilization.
  • After the peak subsides automatically return unused resources to the resource pool for reallocation to another workload.

So, what does this mean to most enterprise Linux data centers? For example, IBM often cites a large insurance firm. The insurer needed fast and flexible provisioning for its database workloads. The company’s approach directed it to deploy more x86 servers to address growth. Unfortunately, the management of software for all those cores had become time consuming and costly. The company deployed 32 x86 servers with 768 cores running 384 competitor’s database licenses.

By leveraging elastic pricing on the Emperor II, for example, it only needed one machine running 63 IFLs serving 64 competitor’s database licenses.  It estimated savings of $15.6 million over 5 years just by eliminating charges for unused cores. (Full disclosure: these figures are provided by IBM; DancingDinosaur did not interview the insurer to verify this data.) Also, note there are many variables at play here around workloads and architecture, usage patterns, labor costs, and more. As IBM warns: Your results may vary.

And then there is security. Since the Emperor II is a Z it delivers all the security of the newest z14, although in a slightly different form. Specifically, it provides:

  • Ultimate workload isolation and pervasive encryption through Secure Service Containers
  • Encryption of data at rest without application change and with better performance than x86
  • Protection of data in flight over the network with full end-to-end network security
  • Use of Protected Keys to secure data without giving up performance
  • Industry-leading secure Java performance via TLS (2-3x faster than Intel)

BTW the Emperor II also anchors IBM’s Blockchain cloud service. That calls for security to the max. In the end. the Emperor II is unlike any x86 Linux system.

  • EAL 5+ isolation, best in class crypto key protection, and Secure Service Containers
  • 640 Power cores in its I/O channels (not included in the core count)
  • Leading I/O capacity and performance in the industry
  • IBM’s shared memory vertical scale architecture with a better architecture for stateful workloads like databases and systems of record
  • Hardware designed to give good response time even with 100% utilization, which simplifies the solution and reduces the extra costs x86 users assume are necessary because they’re used to keeping a utilization safety margin.

This goes far beyond TCO.  Just remember all the things the Emperor II brings: scalability, reliability, container-based security and flexibility, and more.

…and Go Pats!

DancingDinosaur is Alan Radding, a Boston-based veteran information technology analyst, writer, and ghost-writer. Please follow DancingDinosaur on Twitter, @mainframeblog. See more of his IT writing at technologywriter.com and here.

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