setboot(1M) in HP-UX 11i v3

Glossary
Agile Addressing
The ability to address a LUN with the same device special file regardless of the physical location of the
LUN or the number of paths leading to it. In other words, the device special file for a LUN remains the
same even if the LUN is moved from one HBA to another, moved from one switch/hub port to another,
presented via a different target port to the host, or configured with multiple hardware paths.
DSF
Device Special File.
EVM Daemon
The Event Manager (EVM) daemon, evmd, receives events from posting clients and distributes them to
subscribing clients that have indicated that they are interested in receiving the events. The daemon in turn
starts the event logger, evmlogger, and the channel manager, evmchmgr.
Please refer to the evmd(1M), evmlogger(1M), and evmchmgr(1M) manual pages for further information.
Hardware Multithreading
Dual-Core Intel Itanium 2 (Montecito) supports chip level multithreading by incorporating two complete 64-
bit cores on one processor. The idea of hardware multithreading is to increase the instruction throughput
by making use of the idle cycles and idle functional units that occur due to stalls.
Hardware Path
A series of numbers representing the physical or virtualized location of a device. The path is a sequence
of I/O addresses that share a hierarchical relationship.
HBA
Host Bus Adapter.
Hyper-Threading
See Hardware Multithreading.
Legacy Device Special File
A DSF wherein the hardware path information such as SCSI bus, target, and LUN are embedded in the
file’s minor name and file name (such as /dev/dsk/c#t#d#). This format was used in versions prior to HP-
UX 11i v3 and continues to be used on HP-UX 11i v3.
Legacy Hardware Path
The representation of a hardware path as it exists in releases prior to HP-UX 11i v3. It is composed of a
series of bus-nexus addresses separated by ‘/’ leading to the HBA; beneath the HBA, additional address
elements (domain, area, port, target, and LUN) are separated by ‘.’. The string “0/2/1/0.1.4.0.0.2.7”
is an example of a legacy hardware path.
LUN
SCSI logical unit. This refers to an end storage device such as a disk, tape, floppy, or CD/ROM. This is
the logical unit itself and does not represent the path to the logical unit.
LUN Hardware Path
A hardware path for a SCSI LUN that virtualizes all LUN paths. The first path element is 64000, followed
by a virtual bus instance and a logical unit number. Multi-pathed LUNs have a single LUN hardware path.
The string “64000/0xfa00.0x22” is an example of a LUN hardware path.
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