1.1 Design considerations for the IBM z15 1.1.1 Complementing and augmenting cloud solutions 1.1.2 Compliance, resiliency, and performance Delivering new services efficiently and effectively with speed and at scale is crucial to any  business, large or small. Managing changes and potential disruptions to the IT infrastructure  while maintaining availability of services is a must. Ensuring data privacy and protection to  mitigate impacts of security breaches is what every business expects from its IT  infrastructure. There is no doubt that the technology you choose determines business success and  differentiates you from the competition. Technology choices must help meet the expectations  of rapid dynamic development cycles and give the confidence that new and existing services  are resilient and can be delivered quickly and securely. Therefore, the correct balance of open  source technologies and the IT platform on which they run is also key. Today, many business use cloud technologies to deliver cloud native services at scale and at  lower cost, but often the risk of vendor lock-in and escalating costs exists. Also, approximately  80% of enterprise applications and services have not yet moved to the cloud because of  struggles with flexibility, connectivity, security, and management across multicloud  environments.  The latest member of the IBM Z family, the z15, features a tried-and-true architecture to  satisfy today’s demands. It can he lp you create an open, secure, and resilient infrastructure  that streamlines your ability to integrate disparate cloud environments and create a single,  cohesive IT infrastructure that provides high availability, scalability, and performance. The z15  can also help you fully protect your data (in-flight and at-rest), providing the strongest  workload isolation, while facilitating regulatory compliance. The IBM Integrated Accelerator for zEnterprisefi Data Compression (zEDC) provides on-chip  compression (processor nest compression accelerator), which supports DEFLATE-compliant  compression and decompression and GZIP CRC/ZLIB Adler. Compared to the zEDC  Express (PCIe feature), the z15 on-chip compression provides low latency and high  bandwidth while eliminating the need for the virtualization layer. The nest accelerator is now  accessible as a designed instruction, which is available for problem state programs. New with z15, the System Recovery Boost feature offers the customer more CP capacity  during system recovery operations, such as shutdown, IPL, and stand-alone dumps, to  “speed up” the recovery. The feature is embedded in the z15 firmware and is available to  operating systems (opt-in for supported OS-es) to accelerate recovery from maintenance  tasks by providing more CP capacity to opt in LPARs.  For more information about System Recovery Boost, see Chapter 7, “Operating system  support” on page 255. 2  IBM z15 (8561) Technical Guide