|
Site Survey Worksheet: Dell PowerEdge 42-U Rack and 24-U Rack Site Planning Guide
Back to Contents Page
Site Survey Worksheet: Dell™ PowerEdge™ 42-U
Rack and 24-U Rack Site Planning Guide
Ensure that you have the following unloading, receiving, and moving
equipment available:
- A loading dock
 |
NOTE: If no loading dock is available,
inside delivery service will be added to your order so that your rack can be unloaded. If
a loading dock is available but you do not specify inside delivery service, the rack will
be delivered only as far as the loading dock. |
- A ramp or elevator for transferring the rack from the loading dock to
the interior of the building
- The following tools may be required for unpacking your rack:
- A pallet jack or forklift to move the rack pallet
- An adjustable wrench to take the rack off the pallet
- The following tools may be required for installing your rack:
- A 3/8-inch nut driver
- A 3/8-inch wrench
- A 7/16-inch wrench
- A 1/2-inch wrench or socket with driver
- A #2 Phillips screwdriver
- A steel measuring tape
Ensure that the delivery path for the rack meets the following
conditions:
- 284.5 centimeters (cm) (9.33 feet [ft]) of space to extend the wooden
ramp (included in the rack packaging) and off-load the rack from the pallet
- No stairways or doors with saddles or sills
For a Dell PowerEdge 42-unit (U) rack:
- Clearance is 91.4 cm (3 ft) wide by 231 cm (7.58 ft) high for a rack
with a pallet
- Clearance is 81.3 cm (2.67 ft) wide by 214 cm (7.02 ft) high for a
rack without a pallet
For a Dell PowerEdge 4210 42-unit (U) rack:
- Clearance is 80.65 cm (2.65 ft) wide by 218.4 cm (7.17 ft) high for a
rack with a pallet
- Clearance is 60.2 cm (1.96 ft) wide by 199.6 cm (6.55 ft) high for a
rack without a pallet
For a Dell PowerEdge 24-U rack:
- Clearance is 91.4 cm (3 ft) wide by 168 cm (5.50 ft) high for a rack
with a pallet
- Clearance is 81.3 cm (2.67 ft) wide by 153 cm (5.00 ft) high for a
rack without a pallet
|
NOTE: If your site does not meet the
delivery path requirements, you need to remove the rack from the pallet and have two
people available to tilt the rack. |
Ensure that two people are available to remove the rack from the
pallet.
|
NOTE: The following floor plan and
ceiling measurements are Dell specifications. You may need to amend them for compliance
with local ordinances. |
Ensure that the floor plan provides for the following space
requirements:
- At least 30.5 cm (1 ft) in front and back of the rack when the rack
is operational
- At least 61.0 cm (2 ft) in front and back of the rack for servicing
the equipment in the rack; a total of 165 cm (5.42 ft) when the shelves are extended
- Adequate storage space for computer supplies
- Workspace for the system administrator (desk with console)
- Adequate room for maintenance of equipment
- Room for adding equipment when upgrades are needed (optional)
For a 42-U rack or a 4210 42-U rack, check that the ceiling
height is at least 2.74 meters (m) (9 ft) high. For a 24-U rack, the ceiling should
be at least 1.83 m (6 ft) high.
Raised computer floors should meet the following conditions:
- For a 42-U rack, the floor should support 1587 kilograms per square
meter (kg/sq m) (325 pounds per square foot [lb/sq ft]) with a concentrated load of 1587
kg/sq m (325 lb/sq ft). For a 4210 42-U rack, the floor should support 2193 kg/sq m (450
lb/sq ft) with a concentrated load of 2193 kg/sq m (450 lb/sq ft).
For a 24-U rack, the floor should support 493 kg/sq m (101 lb/sq ft) with a concentrated
load of 493 kg/sq m (101 lb/sq ft).
- The floor is well-grounded.
- Carpeted floors are antistatic.
- No heavy equipment or magnetic fields are in the vicinity of the
site.
- Cabling has been planned or installed.
- All equipment has adequate cable length.
- The site is relatively clean and free from airborne particles that
can affect performance.
Before installing the rack system, estimate the heat dissipation of
the proposed rack system (your Dell sales representative can provide you
with specifications for system components).
The air-conditioning in the computer room should meet the following
conditions:
- Operating temperature must not exceed the range of 10° to 35°
Celsius (C) (50° to 95° Fahrenheit [F]) in the immediate vicinity of the racks.
- Operating noncondensing humidity levels must be maintained at 8
percent to 80 percent.
- Lighting should be adequate for servicing the equipment.
The rack system should not be connected to an AC power source
that is also being used by industrial equipment such as electric motors, welders,
elevators, copiers, or large monitors.
Use a line analyzer to check AC power for the following
measurements:
- Voltage variations
- Transient spikes
An AC outlet that accommodates locking plugs should be available for
each locking-plug power distribution unit (PDU) or APC 3000 RM uninterruptible power
supply (UPS)ordered.
|
NOTE: If no room-wide UPS exists, Dell
recommends that you have every server running from a UPS mounted in each rack enclosure.
|
The site should have the appropriate AC power connections:
- In areas served by 115 volts (V)/60 hertz (Hz) power (most of North
and South America and some Far Eastern countries), Dell recommends that you:
- Use the L5-20P locking plug on a power distribution unit or the
L5-30P locking plug for the APC 3000 RM UPS to connect the rack system to an AC power
source. Do not bypass the locking plug by connecting power cables from any
individual components in the rack to an AC power source directly. Contact Dell if you have
questions regarding the correct locking plug for your region.
 |
WARNING: Connecting any power
cable other than a cable with a locking plug to an AC power source can cause a high shock
hazard and can cause personal injury.
|
- Use at least one dedicated service outlet for every two servers
installed in the rack.
|
NOTE: If AC redundancy is desired, the
outlets should come from different sources.
|
- Use one 20-ampere (A) dedicated service outlet for each APC 1400 RM
UPS or APC 2200 RM UPS.
- Use one 30-A dedicated service outlet for each APC 3000 RM UPS.
- In areas served by 208 V/220V 60 Hz power (most of North and South
America and some Far Eastern countries), for systems and power distribution units that use
208 V/220V 60 Hz power, Dell recommends the following:
- Use the L6-30P locking plug on a PDU or an APC 3000 RM UPS to connect
the rack system to an AC power source. Do not bypass the L6-30P locking plug
by connecting power cables from individual components in the rack directly to an AC power
source. Contact Dell if you have questions regarding the correct locking plug for your
region.
|
WARNING: Connecting any power
cable other than the cable with a locking plug to an AC power source can cause a high
shock hazard and can cause personal injury.
|
- Use at least one dedicated service outlet for every PDU installed in
the rack.
|
NOTE: If AC redundancy is desired, the
outlets should come from different sources.
|
- Use one 30-A dedicated service outlet for each APC 3000 RM UPS.
- In areas served by 230 V/50 Hz power (most of Europe, the Middle
East, and the Far East), the rack uses a power distribution unit. The power distribution
unit must be wired to the site's power, or an International Electrotechnical Commission
(IEC) 309-type industrial locking power plug must be used that meets appropriate local
safety requirements. A qualified electrician should perform preparation and configuration
of power systems. The power input cable requirements for the power distribution unit
are as follows:
- For sites that employ single-phase 60-A power, use a 3-wire power
input cable with a maximum individual wire size of 4 gauge. The cable must be capable of
handling 60 A.
- For sites that employ single-phase 30-A power, use 3-wire power input
cables capable of handling 30 A.
- For sites that employ single-phase 20-A power, use 3-wire power input
cables capable of handling 20 A.
- The earth ground is in the range of 2 to 5 ohms.
- The present ground has been measured to ensure that it is not
conducting any current due to neutral-to-ground shorts, reversals, or other problems.
Ensure that the site complies with the following local codes and
regulations:
- Building codes
- Fire codes
- Electrical codes
- Insurance regulations
- Fire detection
- Fire extinguishers (carbon dioxide or halon is recommended)
- Approved evacuation plan
- Fireproof cabinets for storage of flammable material (such as printer
paper)
Back to Contents Page
|
