|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:
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.
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.
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 (noncondensing) lists the relative humidity of the array.
Table 2-4 lists the altitude specifications for the array.
Shock and Vibration lists the shock and vibration specifications for the array.
This section provides information regarding site power and wiring, module AC power requirements, and power cord routing instructions.
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.
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.
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:
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:
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).
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:
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.
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)
For a fully rated battery backup unit (BBU) battery life, cell limitations are listed in the following table.
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).