Siemens SIMATIC IPC647D Operating Instructions Manual page 212

Glossary
ROM
Read-Only Memory ROM is a read-only memory in which every memory location can be
addressed individually. The programs or data are permanently stored and are not lost in the
event of a power failure.
S.M.A.R.T
The Self-Monitoring, Analysis and Reporting Technology (SMART or S.M.A.R.T.) is an
industry standard integrated in storage media. It makes for permanent monitoring of
important parameters and early detection of imminent problems.
SAS
Serial SCSI interface for connection of hard drives, for example, with serial data transmission
SATA
Serial ATA Interface for hard disk drives and optical drives with serial data transmission.
SCSI interface
Small Computer System Interface Interface for connecting SCSI devices such as hard disk
drives or optical drives.
Session-At-Once
In session at once, the CD can be written to both with an audio session and a data session.
The two sessions are written to at once (as in disc at once).
SETUP (BIOS Setup)
A program in which information about the device configuration (that is the configuration of
the hardware on the PC/PG) is defined. The device configuration of the PC/PG is preset with
defaults. Changes must therefore be entered in the SETUP if a memory expansion, new
modules or a new drive are added to the hardware configuration.
SSD (Solid State Drive)
A Solid State Drive is a drive that can be installed like any other drive; it does not contain a
rotating disk or other moving parts because only semiconductor memory chips of similar
capacity will be used. This design makes SSDs more rugged, provides shorter access times,
low energy consumption and rapid data transfer.
STEP 7
Programming software for the creation of user programs for SIMATIC S7 controllers.
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Operating Instructions, 01/2014, A5E32996306-AA
SIMATIC IPC647D