QMS 2025, Руководство администратора

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QMS Memory
Definitions
QMS 3825/3225/2025 System Administrator’s Guide 7-4
ROM stores read-only data, RAM represents temporary storage, and
hard disks hold information on a more permanent basis.
ROM (Read Only Memory)—This type of memory contains data and/
or machine-executable instructions that can be read but not modifi ed.
On the QMS 3825/3225/2025 Print System, the operating system
code, resident fonts, and resident emulations are stored in ROM. This
information is not lost when the printer is turned off.
RAM (Random Access Memory)—RAM is the memory your printer
uses to perform each task. It can be written to and read from. Once a
task is complete, the memory is free again to be used for another file.
This memory is volatile, so if your printer loses power while a file is
being sent, you must resend the file. The number and type of features
you can run on your printer simultaneously depend on the amount of
RAM your printer has and how that RAM is distributed. The 3825
Print System comes with 32 MB of RAM, the maximum possible for
the system. The 3225/2025 Print System comes with 16 MB of RAM
which can be upgraded to 32 MB.
RAM Disk—Also called a virtual disk, the RAM disk is an area of
RAM that is used to simulate an additional hard disk. Data can be
written and read more quickly than on a hard disk, but a RAM disk
loses any information stored on it when the printer’s power is turned
off. The frame buffer and spooling buffer are RAM disk clients.
Hard Disk—The QMS 3825/3225/2025 Print System comes standard
with a 270 MB internal SCSI hard disk and can be upgraded to a 340
MB internal hard disk with up to six external hard disks. These hard
disks serve as secondary storage for data like downloaded fonts and
emulations. Hard disks are also used to increase the amount of colla-
tion that can be accepted and provide a secondary storage area for
spooled data.
SCSI (Small Computer System Interface)—Pronounced “scuzzy,” a
SCSI port allows you to connect up to six hard disks, providing stor-
age for fonts, emulations, and other files. The SCSI port is optional on
the 3825 Print System but standard on the 3225/2025 Print System.
Volatile Memory—This type of memory can be lost when the printer
loses power. For example, most RAM is volatile.