DataDirect Networks EF2800, User Manual

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DataDirect Networks EF2800 FC RAID Storage System User Guide (V 1.0)
G l o s s a r y
out-of-band Method of accessing and managing the EF2800 controller or Subsystem
using the RS-232 or Ethernet, if available, connection.
ownership
In an active-active configuration, a single controller has ownership of
the following resources: arrays and dedicated spares. When a
controller fails, the other controller assumes temporary ownership of
its resources
Parallel Trans-
mission
The transfer of data characters using parallel electrical paths for each
bit of the character, for example, 8 paths for 8-bit characters. Data is
stored in computers in parallel form, but may be converted to serial
form for certain operations. See
Serial Transmission
.
partition
A partition is a logical subdivision of an array to which you can assign
a LUN. You can add, expand, rename, change the LUN, and delete
partitions using the RAID controller’s software. This type of partition is
not the same as a partition you create with your operating system or
third party tools.
point to point
A point-to-point connection is a dedicated communication link
between two devices as an alternative to FC-AL. This term is used to
refer to a link between the controller or router (N-port) and the F-port
on a switch. The EF2800 supports point-to-point connections to fabric
ports only (sometime referred to as F-ports).
Power Cord Throughout this EF2800 user guide this term is used in accordance with
the preferred US context of: “an insulated flexible electric wire fitted
with connectors at each end and used for the transmission of electrical
power to computer equipment.
Power Sup-
ply/Cooling
module
One module in the EF2800 family of RAID products. Power
Supply/Cooling modules contain the power supply and two cooling
fans.