250  IBM z14 (3906) Technical Guide a. PTFs might be required for toleration support or exploitation of z14 features and functions. b. Support statement varies based on Linux on Z distribution and release. c. For SLES12/RHEL7/Ubuntu 16.10, Linux supports 256 cores without SMT and 128 cores with  SMT (=256 threads). d. A total of 32 TB of real storage is supported per server. e. Linux on Z releases can support up to 64 TB of memory. f. On SCSI disks. g. Availability expected in fourth quarter of 2017. h. Packed decimal conversion support. i. Supported for data spaces. j. IBM is working with its Linux distribution Business Partners to provide this feature. k. With IBM Virtual Flash Memory0 for middleware exploitation. Maximum main storage size d 32 GB 32 GB 32 GB 4 TB 16 TB e 85 LPARs Y Y Y Y Y Separate LPAR management of PUs Y Y Y Y Y Dynamic PU add Y Y Y N Y Dynamic LPAR memory upgrade N N N N Y LPAR group absolute capping Y Y Y N N Capacity Provisioning Manager - - - - - Program-directed re-IPL Y f Y f Y f N Y HiperDispatch N N N N g Y IBM Z Integrated Information Processors (zIIPs) N N N N N Transactional Execution N N N N Y Java Exploitation of Transactional Execution N N N N Y Simultaneous multithreading (SMT) N N N N Y Single Instruction Multiple Data (SIMD) Y N N N Y Hardware decimal floating point h N N N N Y 2 GB large page support N N N Y Y Large page (1 MB) support Y i Y i Y i Y Y Out-of-order execution Y Y Y Y Y CPUMF (CPU measurement facility) for z14 N N N Y N j Enhanced flexibility for CoD N N N N g N IBM Virtual Flash Memory (VFM) N N N N Y 1 MB pageable large pages k N N N N N Guarded Storage Facility (GSF) N N N N Y Instruction Execution Protection (IEP) N N N N Y Co-processor Compression Enhancements N N N N N Function a z/VSE  V6R2 z/VSE V6R1 z/VSE V5R2 z/TPF V1R1 Linux on Z b