Dell PowerVault 725N User manual

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Dell™ Systems
Rack Installation Guide
JO525bk0.book Page 1 Monday, January 27, 2003 12:29 PM

Notes, Notices, and Cautions
NOTE: A NOTE indicates important information that helps you make better use of your computer.
NOTICE: A NOTICE indicates either potential damage to hardware or loss of data and tells you
how to avoid the problem.
CAUTION: A CAUTION indicates a potential for property damage, personal injury,
or death.
____________________
Information in this document is subject to change without notice.
© 2003 Dell Computer Corporation. All rights reserved.
Reproductioninanymannerwhatsoever without the written permissionofDellComputerCorporationisstrictlyforbidden.
Trademarks used in this text: Dell, the DELL logo, VersaRails, and RapidRails are trademarks of Dell Computer
Corporation.
Other trademarks and trade names may be used in this document to refer to either the entities claiming the marks and
names or their products. Dell Computer Corporation disclaims any proprietary interest in trademarks and trade names
other than its own.
January 2003 P/N JO525 Rev. A00
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Contents 3
Contents
CAUTION: Safety Instructions . . . . . . . . . . . . . . . . . . 1-1
Rack Mounting of Systems. . . . . . . . . . . . . . . . . . . 1-1
Installation Instructions . . . . . . . . . . . . . . . . . . . . . 1-2
Before You Begin . . . . . . . . . . . . . . . . . . . . . . . 1-2
Important Safety Information . . . . . . . . . . . . . . . . . 1-3
Rack Requirements for VersaRails . . . . . . . . . . . . . . . 1-3
Four-Post Rack Installation . . . . . . . . . . . . . . . . . . . . 1-3
Rack Stabilizer Feet . . . . . . . . . . . . . . . . . . . . . . 1-3
Recommended Tools and Supplies . . . . . . . . . . . . . . . . 1-4
RapidRails Rack Kit Contents. . . . . . . . . . . . . . . . . . . 1-4
VersaRails Rack Kit Contents. . . . . . . . . . . . . . . . . . . 1-5
Installation Tasks . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
Removing the Rack Doors. . . . . . . . . . . . . . . . . . . . . 1-6
Marking the Rack . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
Installing the RapidRails Slide Assemblies . . . . . . . . . . . . 1-8
Installing the VersaRails Slide Assemblies . . . . . . . . . . . . 1-9
Installing the Cable Tray . . . . . . . . . . . . . . . . . . . . 1-11
Installing the System in the Rack . . . . . . . . . . . . . . . 1-12
Installing the Cable-Management Arm . . . . . . . . . . . . . 1-13
Routing Cables . . . . . . . . . . . . . . . . . . . . . . . . . 1-15
Replacing the Rack Doors. . . . . . . . . . . . . . . . . . . . 1-17
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4Contents
Two-Post Rack Installation. . . . . . . . . . . . . . . . . . . . 1-17
Recommended Tools and Supplies . . . . . . . . . . . . . . . . 1-17
Rack Kit Contents . . . . . . . . . . . . . . . . . . . . . . . . 1-18
Installation Tasks . . . . . . . . . . . . . . . . . . . . . . . . 1-18
Marking the Rack . . . . . . . . . . . . . . . . . . . . . . . . 1-19
Universal-Hole Spacing Racks . . . . . . . . . . . . . . . . 1-19
Wide-Hole Spacing Racks . . . . . . . . . . . . . . . . . . 1-19
Installing the Slide Assemblies . . . . . . . . . . . . . . . . . 1-21
Center-Mount Installation . . . . . . . . . . . . . . . . . . 1-21
Flush-Mount Installation . . . . . . . . . . . . . . . . . . . 1-23
Installing the System in the Rack . . . . . . . . . . . . . . . . 1-26
Installing the Cable-Management Arm . . . . . . . . . . . . . 1-27
Routing Cables . . . . . . . . . . . . . . . . . . . . . . . . . . 1-27
Figures
Figure 1-1. RapidRails Rack Kit Contents . . . . . . . . . 1-4
Figure 1-2. VersaRails Rack Kit Contents . . . . . . . . . 1-5
Figure 1-3. One Rack Unit . . . . . . . . . . . . . . . . . 1-7
Figure 1-4. Marking the Vertical Rails . . . . . . . . . . 1-8
Figure 1-5. Installing the RapidRails Slide Assemblies . . . 1-9
Figure 1-6. Installing the VersaRails Slide Assemblies . . 1-10
Figure 1-7. Installing the Cable Tray . . . . . . . . . . 1-11
Figure 1-8. Installing the System in the Rack . . . . . . 1-13
Figure 1-9. Installing the Cable-Management Arm . . . 1-14
Figure 1-10. Opening the Wire Covers . . . . . . . . . . 1-15
Figure 1-11. Routing Cables . . . . . . . . . . . . . . . 1-16
Figure 1-12. Two-Post Rack Kit Components . . . . . . . 1-18
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Contents 5
Figure 1-13. Two-Post, Open-Frame Relay Rack
Universal-Hole Spacing . . . . . . . . . . . 1-19
Figure 1-14. Two-Post, Open-Frame Relay Rack Wide-Hole
Spacing . . . . . . . . . . . . . . . . . . . 1-20
Figure 1-15. Installing the Slide Assemblies for Center-Mount
Configuration . . . . . . . . . . . . . . . . 1-22
Figure 1-16. Installing the Stiffening Bracket and
Cable Tray . . . . . . . . . . . . . . . . . . 1-23
Figure 1-17. Rotating the Front Mounting Bracket for
Flush-Mount Installation . . . . . . . . . . . 1-25
Figure 1-18. Installing the Slide Assemblies for
Flush-Mount Configuration . . . . . . . . . . 1-26
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6Contents
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Rack Installation Guide 1-1
CAUTION: Safety Instructions
Use the following safety guidelines to help ensure your own personal safety and to help
protect your system and working environment from potential damage. For complete safety
information, see the System Information Guide.
Rack Mounting of Systems
Observe the following precautions for rack stability and safety.
Systems are considered to be components in a rack. Thus, "component" refers to any
system as well as to various peripherals or supporting hardware.
CAUTION: Installing systems in a rack without the front and side stabilizers
installed could cause the rack to tip over, potentially resulting in bodily injury
under certain circumstances. Therefore, always install the stabilizers before
installing components in the rack.
After installing system/components in a rack, never pull more than one
component out of the rack on its slide assemblies at one time. The weight of
more than one extended component could cause the rack to tip over and may
result in serious injury.
NOTE: Your system is safety-certified as a free-standing unit and as a component for
use in a Dell™ rack cabinet using the customer rack kit. The installation of your
system and rack kit in any other rack cabinet has not been approved by any safety
agencies. It is your responsibility to ensure that the final combination of system and
rack complies with all applicable safety standards and local electric code
requirements. Dell disclaims all liability and warranties in connection with such
combinations.
• System rack kits are intended to be installed in a rack by trained service technicians. If
you install the kit in any other rack, be sure that the rack meets the specifications of a
Dell rack.
CAUTION: Do not move racks by yourself. Due to the height and weight of the
rack, a minimum of two people should accomplish this task.
• Before working on the rack, make sure that the stabilizers are secured to the rack,
extended to the floor, and that the full weight of the rack rests on the floor. Install
front and side stabilizers on a single rack or front stabilizers for joined multiple racks
before working on the rack.
• Always load the rack from the bottom up, and load the heaviest item in the rack first.
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1-2 Rack Installation Guide
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Installation Instructions
This installation guide provides instructions for trained service technicians installing one or
more systems in an open-frame relay rack or in a rack cabinet. The RapidRails™ rack kit can
be installed in all the system manufacturer's rack cabinets without tools, and the
VersaRails™ rack kit can be installed in most industry-standard rack cabinets. The
procedures for installing both RapidRails and VersaRails rack kits are similar. One rack kit is
required for each system to be installed in the rack cabinet.
This guide includes procedures for the following rack kits:
• RapidRails kit in a four-post rack cabinet
• VersaRails kit in a four-post rack cabinet
• Two-post kit (installed in either center-mount or flush-mount configuration)
Before You Begin
Before you begin installing your system in the rack, carefully read "CAUTION: Safety
Instructions," found earlier in this guide, as well as the safety instructions found in your
System Information Guide for additional information.
CAUTION: When installing multiple systems in a rack, complete all of the
procedures for the current system before attempting to install the next system.
• Make sure that the rack is level and stable before extending a component from the
rack.
• Use caution when pressing the component rail release latches and sliding a
component into or out of a rack; the slide rails can pinch your fingers.
• After a component is inserted into the rack, carefully extend the rail into a locking
position, and then slide the component into the rack.
• Do not overload the AC supply branch circuit that provides power to the rack. The
total rack load should not exceed 80 percent of the branch circuit rating.
• Ensure that proper airflow is provided to components in the rack.
• Do not step on or stand on any component when servicing other components in a
rack.
CAUTION: Safety Instructions (continued)
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Rack Installation Guide 1-3
CAUTION: Rack cabinets can be extremely heavy and move easily on their
casters. They do not have brakes. Use extreme caution while moving the rack
cabinet. Retract the leveling feet when relocating the rack cabinet. Avoid long
or steep inclines or ramps where loss of cabinet control may occur. Extend the
leveling feet for support and to prevent the cabinet from rolling.
NOTE: For instructions on installing the system itself, see "Installing the System in
the Rack."
Important Safety Information
Observe the safety precautions in the following subsections when installing your system in
the rack.
CAUTION: You must strictly follow the procedures in this document to protect
yourself as well as others who may be involved. Your system may be very large
and heavy and proper preparation and planning are important to prevent injury
to yourself and to others. This becomes increasingly important when systems are
installed high up in the rack.
CAUTION: Do not install rack kit components designed for another system. Use
only the rack kit for your system. Using the rack kit for another system may
result in damage to the system and personal injury to yourself and to others.
Rack Requirements for VersaRails
NOTICE: The VersaRails rack kit is intended to be installed by trained service technicians in a
rack that meets the specifications of American National Standards Institute (ANSI)/Electronic
Industries Association (EIA) standard ANSI/EIA-310-D-92, International Electrotechnical
Commission (IEC) 297, and Deutsche Industrie Norm (DIN) 41494. One rack kit is required for
each system that is installed in a rack.
Four-Post Rack Installation
Before attempting this installation, you should read through this entire procedure carefully.
Rack Stabilizer Feet
CAUTION: Installing systems in a rack without the front and side stabilizer feet
installed and anchored to the floor could cause the rack to tip over, potentially
resulting in bodily injury under certain circumstances. Therefore, always install
and anchor the stabilizer feet before installing components in the rack.
CAUTION: After installing systems in a rack, never pull more than one system
out of the rack on its slide assemblies at one time. The weight of more than one
extended system could cause the rack to tip over and cause injury.
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1-4 Rack Installation Guide
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The stabilizer feet help prevent the rack from tipping over when a system is pulled out of
the rack with the slide assemblies fully extended. See the documentation provided with the
rack cabinet for instructions on installing and anchoring the stabilizer feet.
Recommended Tools and Supplies
You may need the following to install the system in a four-post rack cabinet:
• #2 Phillips screwdriver
• Masking tape or a felt-tip pen, for use in marking the mounting holes to be used
RapidRails Rack Kit Contents
The RapidRails rack kit includes the following items (see Figure 1-1):
• One pair of RapidRails slide assemblies
• One cable-management arm
• One cable tray
• Two stop blocks
• Releasable tie wraps (not shown in Figure 1-1)
Figure 1-1. RapidRails Rack Kit Contents
slide assemblies (2)
cable-management arm
stop blocks (2)
cable tray
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Rack Installation Guide 1-5
VersaRails Rack Kit Contents
The VersaRails rack kit includes the following items (see Figure 1-2):
• One pair of VersaRails slide assemblies
• One cable-management arm
• One cable tray
• Two stop blocks
• Eight 10-32 x 0.5-inch flange-head Phillips screws
• Releasable tie wraps (not shown in Figure 1-2)
NOTE: The nonmetric screws described in illustrations and in procedural steps are
identified by size and number of threads-per-inch. For example, a #10 Phillips-head
screw with 32 threads per inch is identified as a 10-32 screw.
Figure 1-2. VersaRails Rack Kit Contents
Installation Tasks
Installing a rack kit involves performing the following tasks in their numbered order:
1Removing the rack doors
2Marking the rack
slide assemblies (2)
10-32 x 0.5-inch
flange-head
Phillips screws (8)
cable-management arm
stop blocks (2)
cable tray
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1-6 Rack Installation Guide
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3Installing the slide assemblies in the rack
• RapidRails installation
• VersaRails installation
4Installing the cable tray
5Installing the system in the rack
6Installing the cable-management arm
7Routing cables
8Replacing the rack doors
NOTE: Two procedures are provided for task 3, installing the slide assemblies in the
rack. One procedure is for the RapidRails kit, and one procedure is for the VersaRails
kit.
Removing the Rack Doors
See the procedures for removing doors in the documentation provided with your rack
cabinet.
CAUTION: Because of the size and weight of the rack cabinet doors, never
attempt to remove or install them by yourself.
CAUTION: Store the two doors where they will not injure someone if the doors
accidently fall over.
Marking the Rack
You must allow 1 U (44 mm, or 1.75 inches) of vertical space for each system you install in
the rack. Rack cabinets that meet EIA-310 standards have an alternating pattern of three
holes per rack unit with center-to-center hole spacing (beginning at the top hole of a 1-U
space) of 15.9 mm, 15.9 mm, and 12.7 mm (0.625 inch, 0.625 inch, and 0.5 inch) for the
front and rear vertical rails (see Figure 1-3). Rack cabinets may have round or square holes.
NOTE: The vertical rails may be marked by horizontal lines and numbers in 1-U
increments. If you want, you can make a note of the number marking on the rack's
vertical rail. It is not necessary to mark or place tape on the rack. If you choose this
method, go to the procedure "Installing the RapidRails Slide Assemblies."
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Rack Installation Guide 1-7
Figure 1-3. One Rack Unit
CAUTION: If you are installing more than one system, install the slide assemblies
so that the first system is installed in the lowest available position in the rack.
To mark the rack, perform the following steps:
1Place a mark on the rack's front vertical rails where you want to locate the bottom of
the system you are installing in the rack cabinet.
The bottom of each 1-U space is at the middle of the narrowest metal area between
holes (marked with a horizontal line on some rack cabinets—see Figure 1-4).
2Place a mark 44 mm (1.75 inches) above the original mark you made (or count up
three holes in a rack that meets EIA-310 standards) and mark the rack's front vertical
rails with a felt-tipped marker or masking tape (if you counted holes, place a mark just
above the top hole). This mark or piece of tape indicates where the system's upper
edge will be located on the vertical rails (see Figure 1-4).
1 U (44 mm or 1.75 inches)
12.7 mm (0.5 inch)
15.9 mm (0.625 inch)
15.9 mm (0.625 inch)
12.7 mm (0.5 inch)
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1-8 Rack Installation Guide
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Figure 1-4. Marking the Vertical Rails
Installing the RapidRails Slide Assemblies
1At the front of the rack cabinet, position one of the RapidRails slide assemblies so that
its mounting-bracket flange fits between the marks or tape you placed on the rack (see
Figure 1-5).
The mounting hook on the slide assembly's front mounting bracket flange should
enter the top hole between the marks you made on the vertical rails.
2Push the slide assembly forward until the mounting hook enters its respective square
hole on the vertical rail, and then push down on the mounting-bracket flange until the
mounting hooks seat in the square holes and the push button pops out and clicks (see
Figure 1-5).
3At the back of the cabinet, pull back on the mounting-bracket flange until the
mounting hooks are located in their respective square holes, and then push down on
the mounting-bracket flange until the mounting hooks seat in the square holes and
the push button pops out and clicks.
4Repeat step 1 through step 3 for the slide assembly on the other side of the rack.
tape on
vertical rail
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Rack Installation Guide 1-9
5Ensure that the rails are mounted at the same vertical position on each side of the
rack.
Figure 1-5. Installing the RapidRails Slide Assemblies
Installing the VersaRails Slide Assemblies
1At the front of the rack cabinet, position one of the VersaRails slide assemblies so that
its mounting-bracket flange fits between the marks or tape (or numbered location) on
the rack (see Figure 1-6).
The three holes on the front of the mounting bracket should align with the three holes
between the marks you made on the vertical rails (or the three holes in the numbered
location you selected).
front of rack
slide assemblies (2)
mounting hook
push button
mounting-bracket
flange
support tab
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1-10 Rack Installation Guide
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2Install two 10-32 x 0.5-inch flange-head Phillips screws in the mounting flange's top
and bottom holes to secure the slide assembly to the front vertical rail (see Figure 1-6).
Figure 1-6. Installing the VersaRails Slide Assemblies
3At the back of the cabinet, pull back on the mounting-bracket flange until the
mounting holes align with their respective holes on the back vertical rail.
4Install two 10-32 x 0.5-inch flange-head Phillips screws in the back mounting flange's
top and bottom holes to secure the slide assembly to the back vertical rail.
5Repeat step 1 through step 4 for the remaining slide assembly on the other side of the
rack.
6Ensure that the slide assemblies are mounted in the same position on each side of the
rack.
front of rack
slide assemblies (2)
10-32 x 0.5-inch
flange-head
Phillips screws
(4 per slide
assembly)
mounting-bracket flange
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Rack Installation Guide 1-11
Installing the Cable Tray
1Grasp the cable tray at each end and lower it into the holes on each slide assembly (see
Figure 1-7). The arrows on the cable tray must point toward the front of the rack.
Figure 1-7. Installing the Cable Tray
2Press the front hook firmly into its socket until it clicks, securing it in place.
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1-12 Rack Installation Guide
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Installing the System in the Rack
CAUTION: If you are installing more than one system, install the first system in
the lowest available position in the rack.
CAUTION: Never pull more than one component out of the rack at a time.
1Pull the two slide assemblies out of the rack until they lock in the fully extended
position.
CAUTION: Because of the size and weight of the system, never attempt to install
the system in the slide assemblies by yourself.
2Remove the system front bezel (if one is installed):
aUnlock the keylock (if the system has a keylock).
bPress the right- and left-end tabs.
cPull the bezel away from the system.
3Lift the system into position in front of the extended slides (see Figure 1-8).
4Place one hand on the front-bottom of the system and the other hand on the back-
bottom of the system.
5Tilt the back of the system down while inserting the back shoulder screws on the sides
of the system into the back slots on the slide assemblies.
6Lower the front of the system and install the front shoulder screws in the front slots
behind the system release latch (see Figure 1-8).
The system release latch moves forward and then snaps back as the shoulder screw
passes into the front slot.
Use this system release latch when you want to remove the system from the slide
assemblies.
7Press the slide release latch at the side of each slide assembly to push the system
completely into the rack (see Figure 1-8).
8Push in and turn the captive thumbscrews on each side of the front-chassis panel to
secure the system to the rack.
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Rack Installation Guide 1-13
Figure 1-8. Installing the System in the Rack
Installing the Cable-Management Arm
NOTICE: The cable-management arm can be installed on the right- or left-side of the rack
cabinet. This procedure describes installing the cable management arm in the right side of the
rack cabinet, as viewed from the back. If you are installing several systems in the rack, consider
installing the cable-management arms on alternating sides of the rack for ease in cable routing.
1Facing the back of the rack cabinet, locate the latch on the end of the right slide
assembly that you secured to the back vertical rail.
2Push the tab on the back end of the cable-management arm into the latch on the end
of the slide assembly (see Figure 1-9).
The latch clicks when locked.
shoulder screw on
system
system release
latch slide
release
latch
thumbscrews
(2)
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1-14 Rack Installation Guide
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3Push the tab on the remaining free end (the front) into a mating latch on the inner
segment of the slide assembly (see Figure 1-9).
The latch clicks when locked.
Figure 1-9. Installing the Cable-Management Arm
4Install a stop block on the end of the opposite slide assembly (see Figure 1-9).
The stop block prevents the backward travel of the cable-management arm and
supports the weight of the arm with its load of installed cables.
latch on inner segment
of slide assembly
stop block
cable-management arm
latch on end of slide
assembly
tab on front end
tab on back end
cable tray
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