Sun Storage 2500-M2 Arrays Specifications

C H A P T E R 2

This chapter describes the physical, environmental, and electrical requirements for the Sun Storage 2500-M2 Arrays. 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
Components	Height	Width	Depth	Weight--Maximum ^[1]	Weight--Empty ^[2]
Controller tray	3.4 in. (8.64 cm)	19 in. (48.26 cm)	21.75 in. (55.25 cm)	59.52 lb (27 kg)	41.01 lb (18.60 kg)
Expansion tray	3.4 in. (8.64 cm)	19 in. (48.26 cm)	21.75 in. (55.25 cm)	57.98 lb (26.3 kg)	39.46 lb (17.9 kg)

TABLE 2-2 provides the weight for array components.

TABLE 2-2 Controller Tray Component Weight
Component	Weight
Controller module	4.70 lb (2.131 kg)
Power-fan module	5.51 lb (2.5 kg)
2.5-in. SATA drive	0.66 lb (0.3 kg)
3.5-in. SATA drive	2.2 lb (1.0 kg)

TABLE 2-3 Controller Tray Shipping Weight
Height	Width	Depth
9.5 in. (24.13 cm)^[3]	25 in. (63.50 cm)	23 in. (58.42 cm)

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 2-4 lists the environmental conditions in which the array is designed to operate.

TABLE 2-4 Controller Tray Temperature ^[4]
Parameter	Requirement
Operating range (both cabinet and subsystem)	50˚F to 104˚F (10˚C to 40˚C)
Maximum rate of change	50˚F (10˚C) per hour
Storage range	14˚F to 122˚F (-10˚C to 50˚C)
Maximum rate of change	59˚F (15˚C) per hour
Transit change	-40˚F to 140˚F (-40˚C to 60˚C)
Maximum rate of change	68˚F (20˚C) per hour

^{Table provides operating temperature, storage, and transit range requirements for the controller tray.}

Humidity

TABLE 2-5 lists the relative humidity ranges of the controller tray.

TABLE 2-5 Humidity (noncondensing)
Parameter	Specification
Operating range (both cabinet and subsystem)	20% to 80% (noncondensing)
Storage range	10% to 90%
Transit range	5% to 90%
Operating gradient	50˚F (10˚C) per hour maximum
Storage gradient	59˚F (15˚C) per hour maximum
Transit gradient	68˚F (20˚C) per hour maximum
Maximum dew point	79˚F (26˚C)
Maximum gradient	10% per hour

Table provides the relative humidity ranges for the controller tray.

Altitude

TABLE 2-6 lists the altitude specifications for the array.

TABLE 2-6 Altitude Ranges for the Controller Tray
Environment	Specification
Operating	100 ft (30.5 m) below sea level to 9840 ft (3000 m) above sea level
Storage	100 ft (30.5 m) below sea level to 9840 ft (3000 m) above sea level
Transit	100 ft (30.5 m) below sea level to 40,000 ft (12,000 m) above sea level

Table provides operating, storage, and transit altitude ranges, above and below sea level, for the controller tray.

Airflow and Heat Dissipation

TABLE 2-7 Airflow and Minimum Clearance
Position	Clearance
Front	30 in. (76 cm)
Back	24 in. (61 cm)

Table provides minimum clearance requirements in front of and behind the controller tray.

TABLE 2-8 Power and Heat Dissipation for the Controller Tray
Component	KVA	Watts (AC)	Btu/Hr
Controller modules with two power-fan modules and 12 drives	0.400	399	1366

Table provides kilovolt amperes, watts, and btu per hour.

Acoustic Noise

TABLE 2-9 Acoustic Noise at 25˚C for the Controller Tray
Measurement	Level
Sound power (standby operation)	6.2 bels maximum
Sound pressure (normal operation)	6.2 bels maximum

Table provides normal and standby operation noise levels for the controller tray.

Shock and Vibration

TABLE 2-10 lists the shock and vibration specifications for the controller tray.

TABLE 2-10 Shock and Vibration
Condition	Parameter	Specification
Vibration	Operating	5-500-5 Hz, sinusoidal
Vibration	Nonoperating (unpacked)	5-500-5 Hz, sinusoidal, 1 octave per minute, flat profile .50 G
Shock	Operating (no damage)	10-g peak acceleration, 5 ms duration, 1/2 sine pulse
Shock	Nonoperating (unpacked)	20-g peak acceleration, 8 ms duration, trapezoidal pulse

Table provides the operating and non-operating shock and vibration specifications for the controller tray.

Electrical Requirements

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

Site Wiring and Power

The controller tray uses 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. They 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 its power source from large switching loads (such as air-conditioning motors, elevator motors, and factory loads).

Power interruptions--The controller tray can withstand the following applied voltage interruptions (with or without an integrated uninterruptible power supply [UPS]):

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 controller tray automatically performs a power-on recovery sequence without operator intervention after power is restored.

Note - When a power failure occurs, the controller tray uses battery power to back up the data that is in cache.

AC 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 2-11.

TABLE 2-11 Tray AC Power Requirements
Condition	Specification
Input voltage	100 - 240V
Input frequency	50 or 60Hz
Input current	7.0 - 2.9A

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.

Nominal input voltages for the DC power source are as follows:

Input voltage: -42 to -60VDC

Operating current: 21.7 to 15.3A

Controller Tray Power Factor Correction

Power factor correction is applied within the power supply, which maintains the power factor of the controller tray at greater than 0.95 with nominal input voltage.

Power Cords and Receptacles

Sun Storage 2500-M2 Arrays are shipped with either two AC power cords or two DC power cords per tray, depending on the configuration ordered.

AC Power Cords

Each AC power cord connects one of the power supplies in a tray to an independent, external AC power source, such as a wall receptacle or a UPS.

If you have a cabinet with internal power cabling, such as a ladder cord, you do not need the AC power cords that are shipped with the controller-drive tray.

DC Power Connector Cables

Each -48-VDC power connector cable plugs into the DC power connector on the back of the controller tray. The three source wires on the other end of the power connector cable connect the tray to centralized DC power plant equipment, typically through a bus bar above the cabinet.

Caution - A qualified service person is required to make this DC power connection according to NEC and CEC guidelines.

Caution - Risk of electrical shock--This unit has more than one power source. To remove all power from the unit, all DC MAINS must be disconnected by removing all power connectors from the power supplies.

Two (optionally four) DC power connector cables are provided with each controller or expansion tray. Two DC power connectors are on the back of each tray’s DC power supply 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.

Battery Life

For a fully rated battery backup unit (BBU) battery life, cell limitations are listed in TABLE 2-12.

TABLE 2-12 Battery Life Specifications
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)

Table provides the battery operating, storage, and transit temperature ranges.

^{1 (TableFootnote) Maximum weight indicates a controller tray with all of its drives and other components installed. Because drive weights can vary, this value can vary from the value specified as much as either 0.66 lb (0.3 kg) times the maximum number of drives per controller tray for 3.5-in. SATA drives or 0.18 lb (0.08 kg) times the maximum number of drives per controller tray for 2.5-in. SATA drives.}

^{2 (TableFootnote) Empty weight indicates a controller tray with the controller modules, the power-fan modules, and the drives removed.}

^{3 (TableFootnote) Controller tray with twelve 3.5-in. drives.}

^{4 (TableFootnote) 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.}