Phoenix RPC12 Series, Cli Reference Manual

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Glossary 10
port interconnect A dual-controller enclosure includes host port interconnect circuitry
which can be used to connect the host ports on the upper controller
module to those on the lower controller module. When enabled, the port
interconnect gives each host access to all the volumes assigned to both
controllers and makes it possible to create a redundant configuration
without using an external Fibre Channel switch. The port interconnect
should only be enabled when the system is used in direct attach
configurations. When using a switch attached configuration, the port
interconnect must be disabled.
power and cooling
module A FRU that includes an AC power supply and two cooling fans. An
enclosure has two modules for failure tolerance and can operate with
only one module.
priority Priority enables controllers to serve other I/O requests while running
jobs (utilities) such as rebuilding virtual disks. Priority ranges from low,
which uses the controller’s minimum resources, to high, which uses the
controller’s maximum resources.
RAID Redundant Array of Independent Disks, a family of techniques for
managing multiple disks to deliver desirable cost, data availability, and
performance characteristics to host environments. (SNIA)
RAIDar The web browser interface that system administrators can use to
configure, monitor, and manage Phoenix storage systems. RAIDar is
accessible from any management host that can access a system through
an out-of-band Ethernet connection.
RAID controller See controller .
RAS Reliability, availability, and serviceability. These headings refer to a
variety of features and initiatives all designed to maximize equipment
uptime and mean time between failures, minimize downtime and the
length of time necessary to repair failures, and eliminate or decrease
single points of failure in favor of redundancy.
rebuild The regeneration and writing onto one or more replacement disks of all
of the user data and check data from a failed disk in a virtual disk with
RAID level 1, 10, 3, 5, and 50. A rebuild can occur while applications
are accessing data on the system’s virtual disks.