NEC 320Fc, User Manual

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Glossary
Glossary-2 Express5800/320 Fc : Active Upgrade™ User’s Guide
configuration file
A file that contains all of the settings pertaining to the Active Upgrade process for
your system. You can create multiple configuration files, each for a different type of
upgrade that you regularly perform on your system. You can also use
nesting to
incorporate the settings of one configuration file into another configuration file.
critical system resource
A system component, such as a hard disk or network adapter, that is required to
run mission-critical applications.
custom action
A mechanism for controlling your critical applications during the Active Upgrade
process. By specifying executable files and certain parameters in the Active
Upgrade console, you can ensure that your applications are stopped or restarted
at the appropriate times when the system is split or merged.
data disk
An internal RDR disk that is resynchronized from the Production Side to the
Upgrade Side upon completion of the Active Upgrade process.
Data disks are available only on the Production Side while the system is running in
split mode . They typically contain live data (for example, database files and
transaction logs) required by your applications.
A disk that contains active Windows operating system components (boot partition,
paging file) cannot be a data disk (see
system disk ).
duplex mode (duplexed)
The state of an ftServer system when most or all of its individual components are
paired with redundant partner components that can keep the system operational if
a hardware failure occurs.
It is safe to initiate an Active Upgrade on a duplexed system because redundant
components continue to run your applications during the upgrade process.
element
Redundant segments of an ftServer system that contain components such as
processors, hard drives, PCI slots, and certain I/O ports.
Each system comes with a minimum of two CPU elements and two I/O elements,
usually distributed over two or more enclosures. The elements in an enclosure
operate with each other, or, if necessary, with elements in another enclosure, to
emulate a single logical system.