Disk and File System Administration - Solaris 9 System Administrator - page 157

SUNW,DBRIe (driver not attached)
csfour (driver not attached)
cgsix, instance #0
obio, instance #0
zs, instance #0
zs, instance #1
eeprom (driver not attached)
counter (driver not attached)
interrupt (driver not attached)
SUNW,fdtwo, instance #0
auxio (driver not attached)
power (driver not attached)
memory (driver not attached)
virtual-memory (driver not attached)
eccmemctl (driver not attached)
SUNW,sx (driver not attached)
TI,TMS390Z50 (driver not attached)

Hot-Plugging and Dynamic
Reconfiguration
Adding, removing, or replacing system components such as SCSI drives typi-
cally requires that the system be shut down, the components changed, and then
the system reconfigured during the next system boot. Hot-plugging allows these
types of hardware system components to be changed without shutting down
the system. Dynamic Reconfiguration supports hot-plugging by allowing the sys-
tem to recognize the new hardware (or even software) configuration.

Not all SCSI and PCI devices are hot-plugging capable. It is a feature of the
latest generation of system components and associated device drivers that sup-
port high availability computer configurations. Also keep in mind that not all
devices that are hot-plugging capable are supported in the Solaris environment.

The cfgadm(1M) command provides the dynamic reconfiguration capability
in the Solaris 9 environment. This command can be used to change system
component configurations, test system components, and display system com-
ponent status. The cfgadm command supports hot-plugging SCSI devices on
SPARC and Intel-compatible platforms and PCI adapter cards on Intel-
compatible platforms.

The components in the system that support hot-plugging and require
dynamic reconfiguration are referred to as attachment points . An attachment
point consists of an occupant (a device that can be added or removed from the
system) and a receptacle (a location such as a slot or connector that accepts the
occupant). Receptacles have three states:

empty : No occupant ➤