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wrap
An action that you take by using a special terminating plug or 'wrap tool.' You verify the soundness of a
physical communication path by using a wrap tool to connect the input side of a cable or connector to
the output side of that same cable or connector. The signal or light that is projected out from a device
is wrapped around the wrap tool and returned to its origin.
write
Write command.
To electronically record data on magnetic tape, anywhere from the beginning-of-tape to the end of the
tape. Contrast with append.
write-once read-many (WORM)
A technology that allows data to be written to storage media. That data is permanently unalterable. It
can be read multiple times.
WWCID
Worldwide cartridge identifier.
WWID
Worldwide identifier.
WWNN
Worldwide node name.
X
XR
External register.
XRA
External register address register.
xSystem
Deprecated IBM term for personal computer/server-type (System x) products, which were formerly
known as xSeries products.
Z
zeroize
Reset to zeros or nulls.
Method of erasing electronically stored data, cryptographic keys, and critical security parameters
(CSPs) by altering or deleting the contents of data storage to prevent recovery of data (FIPS
definition).
zSystem
Deprecated IBM term for IBM S/390-type processor (System z) products such as System z9, which
were formerly known as zSeries products.
Glossary 319