Dell OptiPlex G1, Руководство по обслуживанию

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System Overview 1-3
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For additional performance, the OptiPlex G1 systems employ a secondary
cache memory subsystem with a cache memory controller and 512 KB of
pipeline-burst SRAM cache memory. The L2 cache SRAM is located in the SEC
cartridge/heat sink assembly on the system board.
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Main memory for the OptiPlex G1 systems ranges from a minimum of 32 MB
to a maximum of 256 MB. All main memory is implemented using high-speed
non-ECC DIMMs. One or two DIMMs, ranging in memory capacity sizes from
32 to 128 MB, may be used to provide a maximum memory capacity of
256 MB.
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The system BIOS is implemented in flash ROM, which allows for easy BIOS
upgrades using diskette files or files downloaded from Dell’s home page on
the World Wide Web (
www.dell.com ). The BIOS also incorporates the POST
diagnostics, which tests the system each time the system is started.
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The EIDE subsystem implemented on the system board provides two Mode-4,
DMA bus-mastered EIDE interfaces, each of which can support up to two
EIDE devices (for example, CD-ROM drive, hard-disk drive, and so on). The
EIDE controller attaches to the high-speed PCI local bus.
The primary EIDE interface (IDE1) provides support for up to two high-
performance EIDE devices. The computer’s boot drive should be connected to
the primary EIDE interface.
The secondary EIDE interface (IDE2) also provides support for up to two high-
performance EIDE devices, typically EIDE tape drives or CD-ROM drives.
NOTE: The externally accessible drive bays at the front of the computer are
normally used for diskette, CD-ROM, and/or tape drives. Hard-disk drives
should be installed in the internal hard-disk drive positions described in “Hard-
Disk Drive Service Information” found later in this chapter.
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As a standard feature, OptiPlex G1 systems are equipped with Self-Monitoring
and Analysis Reporting Technology (SMART), which warns you at system start-
up if your hard-disk drive has become unreliable. This warning occurs only if
you use hard-disk drives with SMART technology.