Sun Microsystems Sun Fire X4200 - Manual (Page 190)

Glossary-18 Sun Fire X4100 and Sun Fire X4200 Servers System Management Guide • December 2005
root directory The base directory from which all other directories stem, either directly or
indirectly.
router A system that assigns a path over which to send network packets or other
Internet traffic. Although both hosts and gateways do routing, the term
“router” commonly refers to a device that connects two networks.
RSA algorithm A cryptographic algorithm developed by RSA Data Security, Inc. It can be used
for both encryption and digital signatures.
schema Definitions that describe what type of information can be stored as entries in
the directory. When information that does not match the schema is stored in
the directory, clients attempting to access the directory might be unable to
display the proper results.
S
Secure Shell (SSH) A UNIX shell program and network protocol that enables secure and
encrypted log in and execution of commands on a remote system over an
insecure network.
Secure Sockets Layer
(SSL) A protocol that enables client-to-server communication on a network to be
encrypted for privacy. SSL uses a key exchange method to establish an
environment in which all data exchanged is encrypted with a cipher and
hashed to protect it from eavesdropping and alteration. SSL creates a secure
connection between a web server and a web client. Hypertext Transfer Protocol
Secure (HTTPS) uses SSL.
sensor data record
(SDR) To facilitate dynamic discovery of features, the Intelligent Platform
Management Interface (IPMI) includes this set of records that include software
information such as how many sensors are present, what type they are, their
events, threshold information, and so forth. The sensor data records enable
software to interpret and present sensor data without any prior knowledge
about the platform.
Serial Attached SCSI
(SAS) A point-to-point serial peripheral interface that links controllers directly to
disk drives. SAS devices include two data ports that enable failover
redundancy, which guarantees data communication through a separate path.
serial console A terminal or a tip line connected to the serial port on the service processor. A
serial console is used to configure the system to perform other administrative
tasks.