Sun Microsystems StorEdge 3900 Series Reference And Service Manual page 234

HBA
hot spare
hot-swappable
LUN
LUN mapping
LUN masking
media access control
(MAC) address
network terminal
concentrator
OPIE
Out-of-band
partner group
N port
redundant array of
independent
disks (RAID)
Glossary-2 Sun StorEdge 3900 and 6900 Series 1.1 Reference and Service Manual • July 2002
host bus adapter. A controller board connecting the I/O expansion bus to the
Fibre Channel subsystem.
A drive in a RAID 1 or RAID 5 configuration that contains no data and acts as
a standby in case another drive fails.
The ability of a field-replaceable unit (FRU) to be removed and replaced while
the system remains powered on and operational.
logical unit number. The major and minor device numbers make up the logical
unit numbering sequence for a particular device connected to a computer.
The ability to change the virtual LUN as presented to the server from storage.
This enables such benefits as the ability of a server to boot from the SAN
without requiring a local disk drive. Each server requires LUN 0 to boot.
The characteristic that enables an administrator to dynamically map an HBA to
a specified LUN. This provides an individual server or multiple servers access
to an individual drive or to multiple drives, and prohibits unwanted server
access to the same drives.
A unique address that identifies a storage location or a device.
The network terminal concentrator (NTC) provides a modem connection point
for the Sun StorEdge Remote Response software. The NTC facilitates a point-
to-point protocol connection from a remote support and does not depend on
the Storage Service Processor to complete a call.
One-time passwords in everything. OPIE is a package derived from the
Bellcore S/Key Version 1 distribution that secures a system against replay
attacks.
Refers to the connections and devices that are not in the data path. The Storage
Service Processor does not have access to the data that is stored on the Sun
StorEdge 3900 and 6900 series storage subsystems; thus this information is
considered to be out-of-band.
A pair of interconnected controller units. Expansion units interconnected to the
pair of controller units can also be part of the partner group.
A Fibre Channel port in a point-to-point or Fabric connection.
A configuration in which multiple drives are combined into a single virtual
drive to improve performance and reliability.