System Management Guide: Operating System and Devices

Unconfiguring Storage Adapters

This section provides steps for unconfiguring SCSI, SSA, and Fibre Channel storage adapters.

Before you can remove or replace a storage adapter, you must unconfigure that adapter. Unconfiguring a storage adapter involves the following tasks:

• Closing all applications that are using the adapter you are removing, replacing, or moving
• Unmounting file systems
• Ensuring that all devices connected to the adapter are identified and stopped
• Listing all slots that are currently in use or a slot that is occupied by a specific adapter
• Identifying the adapter's slot location
• Making parent and child devices unavailable
• Making the adapter unavailable

To perform these tasks, you must log in as root user.

For additional information, see PCI Hot Plug Management in the AIX 5L Version 5.1 System Management Concepts: Operating System and Devices.

Unconfiguring SCSI, SSA, and Fibre Channel Adapters

Storage adapters are generally parent devices to media devices, such as disk or tape drives. Removing the parent requires that all attached child devices either be removed or placed in the define state.

To unconfigure SCSI, SSA, and Fibre Channel Adapters:

1. Close all applications that are using the adapter you are unconfiguring.
2. Type lsslot-c pci to list all the hot plug slots in the system unit and display their characteristics.
3. Type lsdev -C to list the current state of all the devices in the system unit.
4. Type umount to unmount previously mounted file systems, directories, or files using this adapter. For additional information, see Mounting or Unmounting a File System in the AIX 5L Version 5.1 System Management Guide: Operating System and Devices.
5. Type rmdev -l adapter -R to make the adapter unavailable.

   Attention: Do not use the -d flag with the rmdev command for hot plug operations because this will cause your configuration to be removed.