Device management
You can use commands to manage the different devices that are available in AIX® . Some of the devices that you can manage
include Logical Volume Manager, file systems, tape drives, and printers.
What's new in Device management
Read about new or significantly changed information for the Device management topic collection.
Logical Volume Manager
The set of operating system commands, library subroutines, and other tools that allow you to establish and control logical volume storage is called the Logical Volume Manager (LVM).
Logical volume storage
Logical volumes are groups of information located on physical volumes.
Paging space and virtual memory
AIX uses virtual memory to address more memory than is physically available in the system.
File systems
A file system is a hierarchical structure (file tree) of files and directories.
Workload manager
Workload Manager (WLM) is designed to provide the system administrator with increased control over how the scheduler virtual memory manager (VMM) and the disk I/O subsystem allocate resources to processes.
Device nodes
Devices are organized into clusters known as nodes . Each node is a logical subsystem of devices, where lower-level devices have a dependency on upper-level devices in child-parent relationships.
Device location codes
The location code is a path from the CPU drawer or system unit through the adapter, signal cables, and the asynchronous distribution box (if there is one) to the device or workstation. This code is another way of identifying physical devices.
AIX device drivers
Many computer programs are dedicated to work with devices that are attached to the computer in some way. For example, some programs send control characters to a printer, some programs receive characters from a console, and some programs read data from a tape. Each of these programs is a device driver program because the program is dedicated to handle input from or output to a device. Such programs are a part of, or an extension of, the computer’s operating system.
Setting up an iSCSI offload adapter
Setting up the iSCSI offload adapter involves configuring the adapter and adding or updating targets. These instructions apply only to the iSCSI offload adapter. For information about configuring the iSCSI software initiator, refer to iSCSI software initiator and software target .
PCI hot plug management
You can insert a new PCI hot plug adapter into an available PCI slot while the operating system is running.
Multiple Path I/O
With Multiple Path I/O (MPIO), a device can be uniquely detected through one or more physical connections, or paths .
Targeted device configuration
The cfgmgr command can be used with the -c flag as a connection option for a limited scope of targeted configuration of I/O devices.
Tape drives
The system management functions described here relate to tape drives.
USB device support
The AIX operating system supports Universal Serial Bus (USB) devices.
Caching storage data
The server-side caching of storage data is supported on the cache devices.
Login names, system IDs, and passwords
The operating system must know who you are in order to provide you with the correct environment.
Common Desktop Environment
With the Common Desktop Environment (CDE) , you can access networked devices and tools without having to be aware of their location. You can exchange data across applications by simply dragging and dropping objects.
Live Partition Mobility with Host Ethernet Adapters
Using the Live Partition Mobility (LPM) with Host Ethernet Adapters (HEA) feature of IBM® PowerVM® software, you can migrate an AIX LPAR and hosted applications from one physical partition to another physical partition while HEA is assigned to the migration partition.
Relocating an adapter for DLPAR
You must configure the graphic adapter before relocating an adapter for dynamic logical partitioning (DLPAR) operations.
Loopback device
A loopback device is a device that can be used as a block device to access files.