C H A P T E R 2 - Sun StorageTek 2500 Series Array Specifications

C H A P T E R 2

Sun StorageTek 2500 Series Array Specifications

This chapter describes the physical, environmental, and electrical requirements for the Sun StorageTek 2500 Series Array. It contains the following sections:

Dimension and Weight Specifications

Environmental Requirements

Electrical Requirements

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 2-1 provides the physical dimensions and weight of the array.

TABLE 2-1 Dimensions and Weight
Height	Width	Depth	Weight (Fully Populated/Empty)
3.5 in.	17.6 in.	20.3 in.	54.3 lb./32 lb.
8.8 cm	44.7 cm	51.4 cm	24.6 kg/14 kg
with rails - 2U

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.

Temperature1 lists the environmental conditions in which the array is designed to operate.

TABLE 2-2 Temperature ¹

Parameter	Specification
Operating range	50°F to 104°F (10°C to 40°C)
Maximum rate of change	18°F (10°C) per hour
Storage range	14°F to 149°F (-10°C to 65°C)
Maximum rate of change	27°F (15°C) per hour
Transit change	-40°F to 149°F (-40°C to 65°C)
Maximum rate of change	36°F (20°C) per hour

¹ If you plan to operate a system at an altitude between 3280 feet to 9842 feet (1000 meters to 3000 meters) above sea level, lower the environmental temperature 3.3°F (1.7°C) for every 3280 feet (1000 meters) above sea level.

Humidity

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

Humidity (noncondensing) lists the relative humidity of the array.

TABLE 2-3 Humidity (noncondensing)

Parameter	Specification
Operating range	20% to 80% (noncondensing)
Storage range	10% to 90%
Transit range	5% to 95%
Maximum dew point	26°C (79°F)
Maximum gradient	10% per hour

Altitude

Table 2-4 lists the altitude specifications for the array.

TABLE 2-4 Altitude

Environment	Specification
Operating	30.5 m (100 ft) below sea level to 3000 m (9842 ft) above sea level
Storage	30.5 m (100 ft) below sea level to 3000 m (9842 ft) above sea level
Transit	30.5 m (100 ft) below sea level to 12,000 m (40,000 ft) above sea level

Shock and Vibration

Shock and Vibration lists the shock and vibration specifications for the array.

TABLE 2-5 Shock and Vibration

Condition	Parameter	Specification
Vibration	Operating	5-500-5 Hz, 0.25 g sinusoidal, 2 octave per minute, 3 axis
	Nonoperating (unpacked)	5-500-5 Hz, 1.0 g sinusoidal, 2 octave per minute, 3 axis
	Transit and storage (packed)	5-500-5 Hz, 2.0 g sinusoidal, 2 octave per minute, 3 axis
Shock	Operating (no damage)	5-g peak acceleration, 11 ms duration, 1/2 sine pulse, 3 axis
	Nonoperating (unpacked)	25-g peak acceleration, 11 ms duration, 1/2 sine pulse, 3 axis
	Transit and storage (packed)	30-g peak acceleration, 11 ms duration, 1/2 sine pulse, 3 axis

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 2-6.

TABLE 2-6 Tray AC Power Requirements
Condition	Specification
Input voltage	100 - 240 V
Input frequency	50 or 60 Hz (nominal)
Steady-state maximum current	At 240 V: 1.9 A; at 100 V: 3.9 A
Standby current	0.21 A at 240 V, 60 Hz; 0.15 A at 100 V, 50 Hz

Site Preparation for DC Power

This section provides information regarding site power and wiring, power requirements (-48 VDC), and power cord routing instructions for the Sun StorageTek 2500 Series Arrays:

Site Wiring and Power

DC Power Input

DC Power Connector Cables and Source Wires

Site Wiring and Power

The Sun StorageTek 2500 Series Arrays use wide-ranging, redundant power supplies that automatically accommodate voltages to the AC power source or the optional -48-VDC power source.

The power supplies meet standard voltage requirements for both North American (USA and Canada) operation and worldwide (except USA and Canada) operation. The power supplies use standard industrial wiring with line-to-neutral or line-to-line power connections.

Note - Power for the optional -48-VDC power configuration is supplied by a centralized DC power plant instead of the AC power source in the cabinet. Refer to the associated manufacturer's documentation for specific DC power source requirements.

Consider the following information when preparing the array's installation site:

Protective ground - Site wiring must include a protective ground connection to the AC power source or the optional -48-VDC power source.

Note - Protective ground is also known as safety ground or chassis ground.

Circuit overloading

Power circuits and associated circuit breakers must provide sufficient power and overload protection. To prevent possible damage to the array, isolate their power source from large switching loads (such as air-conditioning motors, elevator motors, and factory loads).

Interruptions:

Input transient - 50 percent of the nominal voltage

Duration - One-half cycle

Frequency - Once every 10 seconds

Power failures - If a total power failure occurs, the array automatically performs a power-on recovery sequence without operator intervention after power is restored.

DC Power Input

The DC power source must provide the correct voltage, current, and frequency specified on the array nameplate label and the serial number label.

The DC power limits within which the Sun StorageTek 2500 Series Arrays can run without interruption include the following:

Nominal voltage

Low range: -36 VDC

High range: -72 VDC

Operating current: 15.8 A maximum

DC Power Connector Cables and Source Wires

The Sun StorageTek 2500 Series Array are shipped with -48-VDC power connector cables if the DC power option is ordered. The power connector cable plugs into the DC power connector on the back of the array. The three source wires on the other end of the power connector cable connect the array to centralized DC power plant equipment, typically through a bus bar above the cabinet. A qualified service person is required to make this DC power connection.

Two (optionally four) DC power connector cables are provided with each array. There are two DC power connectors on the back of each array's two DC power supplies if additional redundancy is required.

Note - It is not mandatory that the second DC power connection on the array's DC power supplies be connected. The second DC power connection is provided for additional redundancy only and may be connected to a second DC power bus.

Additional DC Specifications

The following are specifications for DC power for a fully populated controller or expansion module:

Heat Output: 445 Watts (1519 BTU/Hr) using DC Power Source (NEBS)

Safety and Emissions: EN 300 386 (NEBS)

Battery Life

For a fully rated battery backup unit (BBU) battery life, cell limitations are listed in the following table.

Operating	50°F to 95°F (10°C to 35°C)
Storage (up to three months)	14°F to 113°F (-10°C to 45°C)
Transit (up to seven days)	-4°F to 140°F (-20°C to 60°C)

Power Cords and Receptacles

All trays are shipped with two AC power cords that are appropriate for use in a typical outlet in the destination country.

Each power cord connects one of 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).