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122 Sun Fire X4150 Server Embedded Lights Out Manager Administration Guide • September 2007
O
object identifier
(OID) A number that identifies an object’s position in a global object registration tree.
Each node of the tree is assigned a number, so that an OID is a sequence of
numbers. In Internet usage the OID numbers are delimited by dots, for
example, “0.128.45.12.” In the Lightweight Directory Access Protocol (LDAP),
OIDs are used to uniquely identify schema elements, including object classes
and attribute types.
OpenBoot™ PROM A layer of software that takes control of an initialized system after the power-
on self-test (POST) successfully tests components. OpenBoot PROM builds
data structures in memory and boots the operating system.
OpenIPMI An operating system-independent, event-driven library for simplifying access
to the Intelligent Platform Management Interface (IPMI).
operator A user with limited privileges to the managed host system.
out-of-band (OOB)
system management Server management capability that is enabled when the operating system
network drivers or the server is not functioning properly.
P
parity A method used by a computer for checking that data received matches data
sent. Also refers to information stored with data on a disk that enables the
controller to rebuild data after a drive failure.
partition A physical section on a hard disk drive.
Peripheral Component
Interconnect (PCI) A local bus standard used to connect peripherals to 32-bit or 64-bit systems.
Peripheral Interface
Controller (PIC) An integrated circuit that controls peripherals in an interrupt request (IRQ)–
driven system, taking away that load from the central processing unit (CPU).
permissions A set of privileges granted or denied to a user or group that specify read,
write, or execution access to a file or directory. For access control, permissions
state whether access to the directory information is granted or denied, and the
level of access that is granted or denied.
physical address An actual hardware address that matches a memory location. Programs that
refer to virtual addresses are subsequently mapped to physical addresses.