GLYPH<SM590000> Improved branch prediction 

GLYPH<SM590000> Improved co-processor functionality 

GLYPH<SM590000> IBM Integrated Accelerator for zEnterprise Data Compression (zEDC) (on-chip compression accelerator) 

It uses 24-, 31-, and 64-bit addressing modes, multiple arithmetic formats, and multiple address spaces for robust inter-process security. 

The z15 system design has the following main objectives: 

GLYPH<SM590000> Offer a data-centric approach to information (data) security that is simple, transparent, and consumable (extensive data encryption from inception to archive, in-flight and at-rest). 

GLYPH<SM590000> Offer a flexible infrastructure to concurrently accommodate a wide range of operating systems and applications, from the traditional systems (for example, z/OS and z/VM) to the world of Linux, cloud, analytics, and mobile computing. 

GLYPH<SM590000> Offer state-of-the-art  integration capability for server consolidation by using virtualization capabilities in a highly secure environment : 

– Logical partitioning, which allows 85 independent logical servers. 

– z/VM, which can virtualize hundreds to thousands of servers as independently running virtual machines (guests). 

– HiperSockets, which implement virtual LANs between logical partitions (LPARs) within the system. 

– Efficient data transfer that uses direct memory access (SMC-D), Remote Direct Memory Access (SMC-R), and reduced storage access latency for transactional environments - zHyperLink Express. 

– The IBM Z Processor Resource/System Manager (PR/SM) is designed for Common Criteria Evaluation Assurance Level 5+ (EAL 5+) certification for security, so an application that is running on one partition (LPAR) cannot access another application on a different partition, which provides essentially the same security as an air-gapped system. 

– A new feature was introduced: Secure Exec ution, which not only securely separates second-level guest operating systems running under KVM for Z from each other but securely separates access to second-level guests from the hypervisor. 

This configuration allows for a logical and virtual server coexistence and maximizes system utilization and efficiency by sharing hardware resources. 

GLYPH<SM590000> Offer  high-performance computing to achieve the outstanding response times that are required by new workload-type applications. This performance is achieved by high-frequency, enhanced superscalar processor technology, out-of-order core execution, large high-speed buffers (cache) and memory, an architecture with multiple complex instructions, and high-bandwidth channels. 

GLYPH<SM590000> Offer the high capacity and  scalability that are required by the most demanding applications, from the single-system and clustered-systems points of view. 

GLYPH<SM590000> Offer the capability of concurrent upgrades for processors, memory, and I/O connectivity, which prevents system outages in planned situations. 

GLYPH<SM590000> Implement a system with  high availability and  reliability. These goals are achieved with redundancy of critical elements and sparing components of a single system, and the clustering technology of the Parallel Sysplex environment. 

GLYPH<SM590000> Have internal and external  connectivity offerings, supporting open standards, such as Gigabit Ethernet (GbE) and Fibre Channel Protocol (FCP). 

