Hitachi XP P9500 User Manual page 561

F
failback
A function for placing the status of a path recovered from an error into the Online
status, and then switching the access path to the path that was just recovered.
failover
A function for switching to another normal path if there is an error in the current access
path, thereby enabling the system to continue to operate.
FCode
A program written by the interpreter language that is not dependent on the machine.
The HBA that can connect to a boot disk might incorporate FCode for use.
H
HBA (Host Bus Adapter)
A device that is an interface between hosts and external devices.
In this manual, the term HBA refers to an interface card installed in a host, in
configurations where the host and storage units are connected via a SCSI or a FC
connection.
HDLM alert driver
A program that receives information about an error detected by the HDLM driver, and
then reports the error information to the HDLM manager.
HDLM driver
A program that controls all the HDLM functions, manages paths, and detects errors.
HDLM manager
A program that manages error information. The HDLM manager receives error
information from the HDLM alert driver and then collects error logs.
HDLM nexus driver
A program that manages HDLM driver instances. The HDLM nexus driver manages the
HDLM driver instances for each HBA port to which an sd or ssd driver, which is managed
by HDLM, is connected.
host
A generic term for both servers and clients.
host device
A logical area in a host LU.
(See also: host LU, host device name)
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