Compaq AlphaServer GS60 Operation Manual page 108

Table 5-2 SRM Console Device Naming Conventions
Field Meaning
dd Device driver
a Adapter ID
u Unit number
n Node number
c Channel
number
s Slot number
h Hose number
Ideally, your system manager labeled the I/O devices on your system, so that you can
identify a particular unit by its name. If not, you will have to follow cables back to the
device adapter and then back to the hose to identify a particular unit.
In either case, select a device on your system that is of the type appropriate for the
media your operating system software is on. It is useful to reserve one device on your
system for this use, for consistency. This is done by setting the bootdef_dev
environment variable, as described next.
5-10 AlphaServer 8200/8400 Operations Manual
Description
Two-letter designator for a port or class device driver.
Usually one of:
dk SCSI disk
dr RAID set disk
du DSSI disk
dv Floppy disk
ew Ethernet network
Specifies the one-letter designator for adapter ID. One
of a, b, c,...
Specifies the device unit number. For DIGITAL MSCP
devices, this is a unique monotonically increasing
number. For SCSI devices, this is 100 times the bus
node number, the next designator.
Specifies the bus node ID. Only meaningful for storage
devices.
Specifies the channel or PCI function number. Only
meaningful for multi-channel or multi-function devices.
Specifies the device's logical slot number. The output
of a show config command indicates the logical slot
numbers for devices in a system.
Specifies the device's hose number. The output of a
show config command shows the KFTIA or KFTHA
modules on the TLSB of your system.
fw FDDI network
mk SCSI tape
mu DSSI tape
pk SCSI class
pu DSSI class