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This chapter presents safety information important to consider before installing the Storage Array. This chapter includes the following sections:
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Note Refer to the Site Preparation and Safety Guide that accompanied the Storage Array for complete information on installation site safety. |
Follow these guidelines to ensure general safety:
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Warning To prevent the switch from overheating, do not operate it in an area that exceeds the maximum recommended ambient temperature of 104° F (40° C). To prevent airflow restriction, allow at least 3 inches (7.6 cm) of clearance around the ventilation openings. |
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Warning This unit is intended for installation in restricted access areas. A restricted access area is where access can only be gained by service personnel through the use of a special tool, lock and key, or other means of security, and is controlled by the authority responsible for the location. |
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Warning Only trained and qualified personnel should be allowed to install, replace, or service this equipment. |
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Warning The safety cover is an integral part of the product. Do not operate the unit without the safety cover installed. Operating the unit without the cover in place will invalidate the safety approvals and pose a risk of fire and electrical hazards. |
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Warning Blank faceplates and cover panels serve three important functions: they prevent exposure to hazardous voltages and currents inside the chassis; they contain electromagnetic interference (EMI) that might disrupt other equipment; and they direct the flow of cooling air through the chassis. Do not operate the system unless all cards, faceplates, front covers, and rear covers are in place. |
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Warning Keep hands and fingers out of the power supply bays. High voltage is present on the power backplane when the system is running. |
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Warning Before working on equipment that is connected to power lines, remove jewelry (including rings, necklaces, and watches). Metal objects will heat up when connected to power and ground and can cause serious burns or weld the metal object to the terminals. |
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Warning Before connecting or disconnecting ground or power wires to the chassis, ensure that power is removed from the DC circuit. To ensure that all power is OFF, locate the circuit breaker on the panel board that services the DC circuit, switch the circuit breaker to the OFF position, and tape the switch handle of the circuit breaker in the OFF position. |
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Warning After wiring the DC power supply, remove the tape from the circuit breaker switch handle and reinstate power by moving the handle of the circuit breaker to the ON position. |
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Warning This equipment is intended to be grounded. Ensure that the host is connected to earth ground during normal use. |
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Warning Do not stack the chassis on any other equipment. If the chassis falls, it can cause severe bodily injury and equipment damage. |
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Warning Ultimate disposal of this product should be handled according to all national laws and regulations. |
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Warning Read the installation instructions before you connect the system to its power source. |
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Warning This product relies on the building's installation for short-circuit (overcurrent) protection. Ensure that a fuse or circuit breaker no larger than 120 VAC, 15A U.S. (240 VAC, 10A international) is used on the phase conductors (all current-carrying conductors). |
Follow these guidelines when working on equipment powered by electricity.
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Warning Before working on a chassis or working near power supplies, unplug the power cord on AC units; disconnect the power at the circuit breaker on DC units. |
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Warning This unit might have more than one power cord. To reduce the risk of electrical shock, disconnect all power supply cords before servicing the unit. |
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Warning When installing the unit, the ground connection must always be made first and disconnected last. |
Electrostatic discharge (ESD) can damage equipment and impair electrical circuitry. It occurs when electronic components are improperly handled and can result in complete or intermittent failures.
Always follow ESD-prevention procedures when removing and replacing components. Ensure that the chassis is electrically connected to earth ground. Wear an ESD-preventive wrist strap, ensuring that it makes good skin contact. Connect the grounding clip of the wrist strap to an unpainted surface of the chassis frame to safely channel unwanted ESD voltages to ground. To properly guard against ESD damage and shocks, the wrist strap and cord must operate effectively. If no wrist strap is available, ground yourself by touching the metal part of the chassis.
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Caution For safety, periodically check the resistance value of the antistatic strap, which should be between 1 to 10 megohms (Mohm). |
This section describes the requirements your site must meet for safe installation and operation of your system. Ensure that your site is properly prepared before beginning installation.
The Storage Array can be mounted in a rack. The location of the chassis and the layout of your equipment rack or wiring room are extremely important for proper system operation. Equipment placed too close together, inadequate ventilation, and inaccessible panels can cause system malfunctions and shutdowns, and can make system maintenance difficult.
When planning your site layout and equipment locations, remember the precautions described in the next section, "Preventive Site Configuration," to help avoid equipment failures and reduce the possibility of environmentally caused shutdowns. If you are experiencing shutdowns or unusually high errors with your existing equipment, these precautions may help you isolate the cause of failures and prevent future problems.
The following precautions will help you plan an acceptable operating environment for your Storage Array and will help you avoid environmentally caused equipment failures.
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Warning To prevent bodily injury when mounting or servicing this unit in a rack, you must take special precautions to ensure that the system remains stable. The following guidelines are provided to ensure your safety. |
The following information will help you plan an acceptable equipment rack configuration.
Check the power at your site to ensure that you are receiving "clean" power (free of spikes and noise). Install a power conditioner if necessary.
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Warning The device is designed to work with TN power systems. |
The Storage Array power supply includes the following features:
The Storage Array has an input power rating of 100-240 VAC, 5.5A, and
50/60 Hz, or 48 VDC, 13A.
Take care to ensure that the current does not exceed the rating of the power source circuitry. This includes cabling, power distribution units, filters, and any other components through which the main AC flows. The power requirements of the Storage Array power supply units are as follows:
These requirements must be added to the power demands of any other electrical devices installed in the equipment rack to arrive at a total power consumption figure. In addition, surge currents must be accommodated. Disk drives
normally consume twice the amount of current at startup as they do during steady-state operation.
The Storage Array is equipped with standard brackets for front-mounting to a 19-inch (48.26-cm) equipment rack. An optional mounting rail with a 23-inch (58.42-cm) adapter bracket can be purchased separately. The mounting rail provides extra support for the Storage Array and permits one person to more easily install or remove the chassis.
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Warning To prevent bodily injury when mounting or servicing this unit in a rack, you must take special precautions to ensure that the system remains stable. The following guidelines are provided to ensure your safety. |
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Warning Two people are required to lift the chassis. Grasp the chassis underneath the lower edge and lift with both hands. To prevent injury, keep your back straight and lift with your legs, not your back. To prevent damage to the chassis and components, never attempt to lift the chassis with the handles on the power supplies or on the interface modules. These handles were not designed to support the weight of the chassis. |
To mount the Storage Array on a 19-inch (48.26-cm) equipment rack, screw the Storage Array mounting brackets to the equipment rack with the four provided screws, as shown in Figure 2-1.
The wire should be copper, 6 AWG (0.162-inch, 4.11-mm diameter) minimum 250V rated.
Step 2 Screw the terminal lug of the grounding wire to the grounding holes on the Storage Array, as shown in Figure 2-2.
Use M5 x 8 or M5 x 10 zinc plated steel screws. Do not overtighten
the screws.
Step 3 Attach the other end of the wire to the grounding point at your site, ensuring an adaquate chassis ground.
It is recommended that all rack-mounted Storage Arrays be grounded to a common point on the equipment rack, as shown in Figure 2-3.
Step 2 Turn off the Storage Array power switch and disconnect the Storage Array
power cords.
Step 3 Disconnect the grounding wire from the rear of the Storage Array.
Step 4 Remove the four screws that connect the chassis to the equipment rack.
Step 5 Slide the Storage Array chassis out of the equipment rack rails.
Posted: Mon Aug 28 18:02:47 PDT 2000
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