As 400 file system

It can be broadly classified in the following categories. These types of commands will always start with WRK. These types of commands will always start with CRT. These types of commands will always start with CHG.

These types of commands will always start with DSP. These types of commands will always start with STR. These types of commands will always start with EDT. These types of commands will always start with DLT. These types of commands will always start with HLD. These types of commands will always start with OVR. Another point to note is the OS version, new commands get added with new OS release. In some rare cases, old commands get attribute changed, which means the actual command itself will change with OS versions.

Maybe a very few or maybe none. Although it is one of the legacy systems but its modified versions have excellent OS and documentation. This blog will take you on a quick journey of when, how and why of AS, all the subsequent versions and operating systems.

IBM released an easy to use computer series named as AS for small businesses and enterprises. The history of AS dates back to the year If you are not much familiar with this technology, then you might not know what does AS mean?

The first language supported by this system was RPG and then the subsequent versions of RPG followed as the system enhanced. Though easy to use for the users, IBM i has a complex internal architecture.

It is integrated with hardware, software, security, a database and other components. AS, now IBM Power system is quite advanced, unique, is extremely adaptable and can readily incorporate new technologies. IBM i is designed keeping the software and hardware separate so changes in one do not affect the other.

This happens through the Machine Interface MI which is a software programming interface between the application, the operating system and hardware. This is how the AS owns independent software and hardware sections. Albeit, so many controversies and lack of interest in people, the technology has its own beauty. The biggest feature of the IBM i system is that it is object oriented from the inception. To understand better, as Linux treats everything as a file including devices like printers, IBM i treats everything as an object.

Not only this there are many other important features that have made AS a widely popular. OS, the operating system in AS server provided 5 security settings value from 10, 20, 30, 40, 50 since it ventured. Though value 10 setting has become obsolete and removed from the latest IBM i system, other 4 values remain and are used according to the business requirements of organizations. Level It promised no security at all. It did not require any password to sign into terminal session. Therefore this level has been removed.

Level It provides sign on password security which means once logged in users will have access to all the objects on the system. It was once used as a default setting in the system. Level Provides object authority to the users. Users require object level access planning and implementation.

Level This level is now the default setting in all the IBM i system. It ensures integrity protection and separates the user domain from the system domain. All the requests that are made from unapproved interfaces are not allowed. Level Adds additional integrity protection features which meet the U. It is recommended that organizations go for the highest security settings as this ensures fool proof protection of data. Well, it completely depends on your system capabilities and software, so make sure that your software run on the OS with level 40 security settings as it is the default in every system.

If not level 40, Level 30 can be used if you have software issues on implementing level But while using level 30 you should be confident enough on how to implement object access controls. Break up your user community and create certain group profiles for each set and then implement your access controls on the group profiles rather than providing coding controls for each individual user profile. When we talk about Level 20, security issues arise.

Therefore this level should be avoided most of the times. If you are dicey about using your third-party software on upgraded system then you can activate audit logging few weeks before changing the level and see if there are any problems. They would show on the top of the list.

You can analyze statistics by object type, object name or library name. Having the entire system's objects in a single data view or on a single chart gives you a complete picture of what is consuming the DASD on your system. A new and creative way of looking at this data is through what we call a 'Path Token Analysis'. Through this data view, you are able to see the total size of all objects on the system that contain the word 'TEMP' anywhere in its file name or IFS file path. There may be several 'TEMP' folders and files throughout the system.

There might be some programs, physical files or data areas called 'TEMP'. This 'token' analysis summarizes the statistics for all of these objects across the entire system. This is an interesting way to analyze DASD usage. You may have temporary folders and files scattered across the system or maybe a user profile shows on the list. How can we help you today? Thank you for contacting us. Do you have any issues or questions that I can help you with today?