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AIX 5L Version 5.1

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Feature Benefits
Flexibility  
Multi platform operating system Flexibility to select a POWER-based system helps protect investments in applications, a processes and skills
Affinity with Linux Helps reduce cost and improve e-business solutions by allowing portable Linux applications to be combined with the scalability and robustness of AIX
System Scalability
New JFS2 File System Efficient storage of large (4 Petabyte limit,1 Terabyte tested)files for deployment of advanced e-business applications
Selectable Logical Track Group (LTG) Helps administrators tune disk storage for optimum performance
e-business and Network Performance
Virtual IP Address (VIPA) Helps applications remain available if a network connection is lost
IP Multipath Routing Improves network availability by providing multiple routes to a destination
Multiple Default Gateways Keeps traffic moving through a network by detecting and routing around dead gateways
Extended Memory Allocator Helps improve performance of applications that request large numbers of small memory blocks
Security
Kerberos V5 Authentication (POWER only) Helps administrators simplify password authentication for users connecting to several machines
Java software
Included in base AIX Provides a popular cross-platform programming language for e-business applications
Systems and workload management
/proc file system Helps system administrators more easily review system workloads and processes for corrective action
RSCT Automates system monitoring thereby helping to improve system availability and performance
UNIX System V Release 4 (SVR4)Printing Allows users comfortable with SVR4 print utilities to more easily use AIX
Accounting in Workload Manager Allows users to collect system resource usage information for billing or reporting purposes
Storage  
Optional Passive LVM Mirror Write Consistency Helps maintain application and data integrity in the event of a system crash
Optional hot spare disk support Improves availability of applications or data
Hot spot management commands for Logical Volume Manager Allows administrators to identify hot spots for relocation without sacrificing availability
Reliability, Availability, Serviceability (RAS)
Availability, Serviceability (RAS) Automated system hang recovery Helps systems remain available without administrator intervention
Consecutive counting of duplicate errors Avoids error capacity overloads
Ability to deactivate active paging space Dynamically allows deactivation without rebooting
Automatic dump analysis and e-mail forwarding Accelerates customer support and problem diagnosis
Dump compression and capacity warning Helps avoid situations where dump exceeds system recording capacity
Development and Performance Tools
"pax" archive format Enables 64-bit ready support for files larger than 2GB
New and enhanced Tools Plus program interfaces for access to Performance Monitor data New and enhanced Tools Plus program interfaces for access to Performance Monitor data

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