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1-8 AlphaServer DS20L User’s Guide
• VCCI Class A ITE (Japan)
• AS/NZS 3548:1995/ Class A ITE (Australia)
• CNS13438 Class A (Taiwan)
• The DS20L is designed for professional use in cluster applications. DS20L
clusters deployed in European Community (EC) countries must be
configured with a minimum of four (4) DS20Ls to meet the requirements of
EN61000-3-2. Hewlett-Packard has certified and labeled the DS20L as
European Conforming (CE) compliant based on the minimum four (4) node
installation requirement.
1.2.3.3 Thermal
The DS20L system is designed with a high-performance cooling system to
maintain internal component temperatures within desired operating ranges.
Proper operation of the cooling system requires that the front of the enclosure
receives an adequate supply of air. If the system is installed behind a grill or
other obstruction, it should be no more restrictive than the standard bezel:
approximately 50% open with no shadows. Table 1–2 lists all relevant
environmental requirements.
1.2.4 Physical
Table 1–3 gives the physical dimensions of the AlphaServer DS20L.
Table 1– 3 Physical Dimensions
Dimension Value
Length 20.5 in / 52 cm
Width 17.5 in / 44.5 cm
Height 1.75 in / 4.5 cm (1U)
Weight 21 lbs / 9.4 kg
1.2.4.1 I/O
The rear-panel connectors are integral to the AlphaServer DS20L chassis. The
system uses a custom I/O board to provide connections for two serial ports, one
parallel port, and two Ethernet RJ45 ports.
The DS20L external rear-panel connectors are shown in Figure 1-5.