C H A P T E R  3

Sun StorageTek 6540 Array Specifications

This chapter describes the physical, environmental, and electrical requirements for the Sun StorageTek 6540 Array. It contains the following sections:

Dimension and Weight Specifications

The floor space at the installation site must be strong enough to support the combined weight of the cabinet, controller trays, expansion trays, and associated equipment. The site also requires sufficient space for installation, operation, and servicing the arrays and sufficient ventilation to provide a free flow of air to the unit.

The total weight of an expansion tray depends on the number of drives installed.

TABLE 3-1 provides the physical dimensions and weight of the array trays.

TABLE 3-1 Tray Dimensions and Weight




Weight (Fully Populated)

Controller tray

6.87 in.

17.5 in.

24 in.

80.5 lbs

17.45 cm

44.45 cm

60.96 cm

36.51 kg

Expansion tray

5.25 in.

17.5 in.

24 in.

95 lbs

13.335 cm

44.45 cm

60.96 cm

43 kg

Environmental Requirements

This section describes the environmental conditions that are prerequisite to installing the unit, and heat conditions that are generated by normal operation of the unit.

TABLE 3-2 lists the environmental conditions in which the module is designed to operate.

TABLE 3-2 Operating Environmental Conditions




32° F to 104° F (0° C to 40° C)

Relative humidity

20% to 80% noncondensing


100 feet (30.5 meters) below sea level to 10,000 feet (3,048 meters) above sea level


25 G at 3.75 ms triangular


0.25 G, 5 to 150 Hz sinusoidal

Heat output

Controller Tray

Expansion Tray


235 watts avgerage (804 BTU/Hr)

444 watts average (1517 BTU/Hr)

*If you plan to operate a system at an altitude between 3280 feet to 10,000 feet (1000 meters to 3048 meters) above sea level, lower the environmental temperature 3.3° F (1.7 °C) for every 3280 feet (1000 meters) above sea level.

Table shows the operating temperature, relative humidity, altitude, shock, vibration, and heat output ranges of the array trays.

TABLE 3-3 lists the nonoperating environmental conditions of the tray.

TABLE 3-3 Nonoperating Environmental Conditions



Temperature (storage)

14° F to 149° F (-10° C to 65° C)

Temperature (transit)

-40° F to 149° F (-40° C to 65° C)

Humidity (storage)

10% to 93%

Humidity (transit)

5% to 95%


100 feet (30.5 meters) below sea level to 40,000 feet (12,000 meters) above sea level


40 G, 3.75 ms up to 65 G, 3.75 ms triangular

20 G, 8 ms square or trapezoidal


5 G, 5 to 150 Hz sinusoidal

Electrical Requirements

This section provides information regarding site power and wiring, module AC power requirements, and power cord routing instructions.

Site Wiring and Power

The tray uses wide-ranging redundant power supplies that automatically accommodate voltages to the AC power source. The power supplies operate within the range of 90 VAC to 264 VAC, at a minimum frequency of 50 Hz and a maximum frequency of 60 Hz. The power supplies meet standard voltage requirements for both domestic (inside USA) and international (outside USA) operation. They use standard industrial wiring with line-to-neutral or line-to-line power connections.

Power Input

The AC power sources must provide the correct voltage, current, and frequency specified on the tray model and serial number label. The tray can run without interruption within the limits shown in TABLE 3-4.

TABLE 3-4 Tray AC Power Requirements



AC power (Controller tray)

2.65A maximum operating @ 240 VAC (180 to 264 VAC, 50/60Hz)

5.53A maximum operating @ 115VAC (90 to 136 VAC 50/60HZ)

AC power (Expansion tray)

1.97A maximum operating @ 240VAC (180 to 264 VAC, 50/60Hz)

4.11A maximum operating @ 115VAC (90 to 136 VAC 50/60HZ)

The Sun Rack cabinet power distribution systems only work at 180 to 264VAC. Internal components will never be operated below 180V (200V nominal) when in this cabinet.

Power Cords and Receptacles

Power cords must be ordered separately so that are appropriate for use in a typical outlet in the destination country.

The power cords connect the power supplies in a tray to an independent external power source, such as those provided in the supported Sun cabinet, a wall receptacle, or uninterruptible power supply (UPS).