Question & Answer
Question
Ever wondered when key features of AIX arrived or what new features are available in a newer AIX release?
See what AIX release you are currently running by using the AIX command oslevel -s and review the details for each release below.
Answer
Included below are key Infrastructure software such as:
- PowerVC,
- PowerSC,
- Shared Storage Pools, and
- Simplified Remote Restart
These features are not strictly speaking AIX features but they are important software that improves AIX.
Key Release Dates and End of Support
Release Number | Release Date | Regular Support Ended |
---|---|---|
AIX 4.1 - 4.3 | 12 Aug 1994 | 31 Dec 2003 |
AIX 5.1 -5.3 | 24 Oct 2001 | 30 April 2012 |
AIX 6.1 | 9 Nov 2007 | 30 April 2017 |
AIX 7.1 | 10 Sep 2010 | 30 April 2023 |
AIX 7.2 | 1 Dec 2015 | Supported |
AIX 7.3 | 10 Dec 2021 | Supported |
Note: When regular support ends, you may, for a period be able to purchase extended support, which often costs 2 or 3 times the regular support. Extended support is meant to be used to cover a short-term period until you upgrade to a supported release.
To use a car analogy: it is not sensible to purchase extra car insurance to avoid regular maintenance of your car brakes and lights!
Remember some features arrive over a few years or releases. The first release might be for technical evaluate (not production).
The following release is ready for production use with the basic features. Then, following releases includes enhancements and advanced feature.
The following release is ready for production use with the basic features. Then, following releases includes enhancements and advanced feature.
Ignoring AIX release 1 and AIX release 2, which were for early UNIX hardware from IBM called IBM RT and IBM PS/2.
AIX 3.1-2 Starter pack
AIX 3 (1990) for Power based processor computers (initially RS/6000) based on UNIX AT&T System V.2 and V.3 with some added BSD 4.2 features plus IBM unique features in simplifying systems management:
- Systems Management menu interface: smit & smitty
- Network Installation Management (NIM)
- Journaling File System (JFS)
- Logical Volume Management (LVM)
- Make a bootable system backup (mksysb)
- High Availability Clusters (HACMP) - later called PowerHA
- Real-time computing infrastructure
AIX 4.1-3 What is New?
- AIX binary compatibility with AIX 3
- Symmetrical Multi-Processor (SMP) - A VERY BIG KERNEL CHANGE
- SMP hardware J30/R40 with 6 or 8 CPUs
- NIM Enhancements
- JFS greater than 2 GB
- NFS v3
- 32-bit/64-bit applications at the same time
- Add 16 GB total memory support
- Alternate disk installation AIX upgrade
- Last release 4.3.3
AIX 5.1-3 What is New?
- AIX binary compatibility with AIX 4
- HMC and Hypervisor
- Virtualization of CPU & RAM
- Virtual disks + network = VIOS
- Live Partition Mobility (evaluation)
- Dynamic LPAR: CPU + memory
- Symmetric multithreading SMT
- AIX MPIO
- Concurrent I/O for RDBMS
- NPIV SAN virtualization
- Workload Manager (process groups)
- JFS2 – extent-based space allocation
- First Failure Data Capture (FFDC)
- PowerSC
- NFS version 4
- Last release 5.3
AIX 6.1 What is New?
- AIX binary compatibility with AIX 5
- Live Partition Mobility (LPM) for production
- Workload Partition & Live Application Mobility (LAM)
- Versioned WPAR for AIX 5.2 & 5.3
- Role Based Access Control (RBAC)
- Encrypted JFS
- Trusted AIX
- AIXpert - system hardening by rules
- Kernel - Storage Keys for RAS
- Dynamic process tracing: ProbeVue
- Firmware assisted dump
- AES encryption for NFS v3 and v4
- Nigel’s performance monitor: nmon
- Last Release 6.1 TL9
AIX 7.1 What is New?
- AIX binary compatibility with AIX 6
- JFS2 Integrated Snapshots
- WPAR storage devices
- Role Based Access Control (RBAC)
- Encrypting JFS file system
- Trusted AIX and Trusted Execution
- Cluster Aware AIX (CAA)
- Snapshot of a JFS2 file system
- topas Multi-server
- JFS to JFS2
- Secure Shell (SSH) in base AIX
- Active Memory Expansion
- Transactional Memory
- Shared Storage Pool support
- PowerVC Support
- Last release 7.1 TL5 - functionally stabilized since AIX 7.2 arrived. Mostly bug and security fixes ever since.
AIX 7.2 What is New?
- AIX binary compatibility with AIX 7.1
- Live (Kernel) Update capability for Technology Levels, Service Packs, and Fixes.
- Active Memory Expansion 64k page
- LVM thin storage block reclamation
- AIX Open Source Toolbox Enhancements
- SMB 2.1 client and SMB 3.0.2 client
- Migration to Cloud ready - create_ova
- Flash Cache For Fibre Channel disks
- Includes Dynamic System Optimizer (DSO)
- External Interrupt Virtualization Engine (XIVE)
- Live Kernel Update LKU Enhancements
- POWER9 HW NX GZIP engine
- Ansible "Paybooks" released for AIX
- Scaling enhancements – larger LPARs
- Simplified Remote Restart Supported
- Application address space randomization
- LVM passive mirror enhancements for concurrent I/O applications
- NIM HTTP support for updates
- Shared memory communications over RDMA (SMCR)
- AIX installation from USB flash drive (also added to AIX 7.1 TL5)
- Enhanced multi-queue NPIV performance
- Fibre Channel: Congestion Notification, 32 Gb support, and NVMe over Fibre Channel
- 14 million open files per SRAD
- NVMe drive space reclaim
- GLVM HW assisted compression
- OpenSSH with Power HW GZIP compression
- OpenSSL version 3 via the AIX Web Download Pack
- BSI and NIAP common criteria certifications for AIX 7.2 TL5
AIX 7.3 What is New?
- AIX binary compatibility with AIX 7.2
- Power10 server support:
- Power10 support 240 cores & 1920 hardware threads per LPAR
- Matrix Maths Accelerator (MMA)
- OpenBLAS with MMA support, available from the AIX Toolbox
- Optimized memcpy instructions
- For new generation IBM OpenXL compilers
- Stronger default password rules and new default password algorithm (SSHA-256)
- telnet & ftp not in default installation (due to security risks)
- ”Out of the box” ready for POWER or Power10 hardware NX GZIP with "pigz" and create_ova supported
- New JFS2 file systems default to inline log
- Added Open Source bash 5.1 and Python 3.9
- AIX Open Source Toolbox that uses “dnf” & toolbox updated plus many extra packages
- Fast Dynamic LPAR resize CPU and memory
- Reduced LPAR boot times with large memory
- LVM Encryption for rootvg
- 128 TB JFS2 file system and file size
- Oracle 19c support
- Virtual Persistent Memory (vPMem) can be configured as a hdisk
- Live update of AIX kernel tunables (no, vmo)
- New IPsec features (NAT-T, IKE fragmentation)
- Stronger default security for AIX trace channel 0
- Sendmail support for SASL authentication
- TCP Cubic support
- Increased fork and exec scaling
- Enhanced Async IO IOPs scaling
- NVME over fabrics with NPIV storage virtualization
- Fabric Device Management Interface (FDMI) support
- Install and boot from iSCSI attached storage
- Physical volume encryption, including internal SED drives
- OpenSSL version 3
- AIX dump exploitation of Power hardware GZIP
- Reduced alternate path fail-over times with 16 GB and faster fibre channel adapters
- NFS client support for files larger than 32 TB
- tar command support for the pax archive format
- New features are added with technology level (TL) updates, which occurs once a year, typically in the fourth quarter.
This timeline shows Power-based Server releases compared with AIX Releases
- The original information is spread across dozens of web pages that details the AIX version that were supported on every server dating back to POWER5: System to AIX maps
Notes:
- The Power Modes are a setting on each LPAR or virtual machine.
- Power Servers support their native mode and the previous two POWER processors.
- Each AIX release supports limited Power Modes.
- To change virtual machine Mode
- Shut down the virtual machine
- On the HMC, change virtual machine Processor Mode setting ready for the next reboot
- Restart the virtual machine
- If you change mode but your AIX does not support that Mode, AIX halts during the boot sequence. For example, AIX 7.1 can run on Power10 Server, if the virtual machine is in P8 (POWER8) Mode. AIX 7.1 in P7 Mode can't Live Partition Mobility (LPM) migrate to a Power10 Server because Power10 does not have a P7 Mode. AIX 7.1 in P8 Mode (on POWER8 or POWER9 or Power10 servers) can LPM migrate to or from Power10.
A few reminders of often forgotten details of AIX updates
IBM's AIX binary compatibility statement
- See the IBM Statement here: https://www.ibm.com/docs/en/aix/7.3?topic=aix-binary-compatibility
Amazing near secret 1:
- With a few caveats*, AIX 5.3 or later application run on AIX 7.3 with zero changes.
- * See the webpage for the rare cases unless the developer deliberately used HW features supports on particular chips
Amazing near secret 2:
- If you are paying for AIX SWMA (software maintenance), then you are entitled to use ESS to download any newer AIX release and upgrade to it with no further fees.
Amazing near secret 3:
- It is obvious you can upgrade from one AIX to the next through the releases to the latest.
- But you can also jump from say AIX 6.1 straight to the current AIX 7.3 without touching AIX 7.1 or AIX 7.2.
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Modified date:
08 June 2023
UID
ibm11125435