NEC 320Fc - Manual (Page 111)

Glossary
Glossary-3
enclosure
A physical container that includes at least one CPU element and at least one I/O
element. In a system with more than one physical enclosure, you may be able to
remove or upgrade one enclosure while the other continues to run your
applications uninterrupted.
executable file
A program file, such as a .exe, .bat, or .vbs file, that you can assign to a custom
action .
fault-tolerant mode
Same as duplex mode .
high priority update (hotfix)
Critical update that should be installed as soon as it becomes available.
installation program
A program file that installs a software package.
mandatory system disk
A disk that is automatically marked as a system disk (on the Disk Selection page
of the Active Upgrade console) and cannot be changed to a data disk. A mandatory
system disk contains either boot files or paging files (virtual memory files) that are
currently in use by the running operating system.
In detail, a disk becomes a mandatory system disk if:
• It contains a volume or part of a volume that the operating system identifies as
a system volume.
• It contains a volume or part of a volume that contains an operating system
paging file.
• It contains a volume or a part of a volume that contains a mount point for a
volume that is either a system volume or contains a paging file.
Note that volumes can span multiple disks and that disks can contain multiple
volumes. The operating system defines as a system volume the volume that was
used to perform the initial low level boot of the system and the volume that contains
the Windows directory. These are typically the same volume but they need not be.