User`s guide

1-4 AlphaServer DS20 User’s Guide
1.2 System Features
The system provides a number of features that enhance its reliability and
improve its expansion capabilities, as well as facilitate hardware management
and improve security.
Reliability
• 64-bit Alpha architecture Provides significantly better performance than
32-bit architecture.
•
Error correction code (ECC)
on memory and CPU cache
Allows recovery from most cache and memory
errors.
•
Variable fan speed
Adjusts fan speed according to system
temperature.
•
Integral Remote Console
Management (RCM) function
Enables remote access to system.
•
Internal sensors
Monitor and detect internal system temperature,
fan failure, power supply temperature.
•
Hot swap disk capability
Allows replacement of StorageWorks disk drives
while the system continues to operate.
•
Redundant power
A single power supply can run a fully configured
system. An optional second power supply can be
added to provide sufficient power for the system
to continue to run even if one supply should fail.
System Expansion
•
Flexible memory
architecture.
System memory can be expanded from 128 MB to
4 GB.
•
Six PCI expansion slots.
One PCI slot can be used as
an ISA slot instead.
Accommodates industry-standard option cards
such as Ethernet, FDDI, and SCSI devices.
•
Dual-ported integrated
UltraSCSI controller
Supports tape, disks, and CD-ROM without use of
an expansion slot.