Acer Altos RM900 User manual

Acer Altos RM900
Installation Guide
1
1Getting Started
Unpack the rack and check the packing list that came with it. Make
sure that you have all components.
The unit of measurement used in this
document is "U" (1U = 1.75 inches or 44.45
mm). The total sum of the heights of all
components in the rack measured in "U"
cannot exceed the height of the rack.
1.1 Standard Components
The standard rack consists of the following:
•Removable vented front and rear doors
•Removable side panels
•Stabilizing feet
•Leveling feet
•Casters
•Cable management brackets
•M6 washer-face screws
•M6 cage nuts

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1.2 Optional Components
•Acer Altos 1100, 11000, 12000, and 21000 server rackmount kit
•Fixed monitor shelf
•One 19-inch keyboard/touchpad with sliding shelf
•4-port keyboard/mouse/monitor switch box
•Blanking panel kit (one 1U, one 2U, and one 3U)
•Acer Altos storage subsystem
1.3 Screw Types Used
The following screws are used in the assembly of the Acer Altos
RM900 and other rack-mountable components:
Screw Type Figure Usage
M4 metal screw Securing the component
rail to the mounting rail.
See section 8.1
M5 metal screw Securing the system
components and the
mounting brackets to the
rack
M6 washer-face
metal screw
Securing the system
components to the rack
M6 thumbscrew Securing the server
system to the rack (for
Acer Altos 1100 server)

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Screw Type Figure Usage
#6-32 screw Installing the front panel to
the server system (for
Acer Altos 11000, 12000,
and 21000 server)
#6-32
thumbscrew
Securing the server and
front panel to the rack (for
Acer Altos 11000, 12000,
and 21000 server)
M5 metal tapping
screw
Securing the cable
bracket to the rack (comes
with the cable bracket
package)
Cage Nut Supports the M6 metal
screws for securing
system components to the
rack

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2Features
2.1 Front View
The following figure shows the front view of the Acer Altos RM900:
Figure 1 The Acer Altos RM900 (42U Rack) - Front View
Vents
Front Door
Side Panel
Handle with Lock
Stand and
Stabilizing Foot

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2.2 Rear View
The following figure shows the rear view of the Acer Altos RM900:
Figure 2 The Acer Altos RM900 (42U Rack) - Rear View
Rear door
Handle
Leveling foot
(beside caster)
Fan

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2.3 Inside Components
The following figure shows the different components that can be
installed in the Acer Altos RM900:
Figure 3 A Typical Acer Altos RM900 Enclosure
Monitor
Blanking panelBlanking panel
Storage subsystems
Switchbox
Keyboard/touchpad
with sliding shelf
Server
Server
UPS

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2.4 Vertical Mounting Hole Pattern
The four vertical rails of the Acer Altos RM900 contain square
mounting holes arranged in a manner shown in this figure:
Figure 4 Vertical Square Mounting Hole Spacing
The distance from the center of two holes with closer spacing to the
center of the next pair is equivalent to 1U.
When installing components, you must start your measurement from
the center of the two holes with closer spacing. Otherwise, the screw
holes on the component may not match with those on the rack.
1U
1U
2U
0.25”
0.625”
0.625
0.5”
0.625”
0.625”
0.5”

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3Positioning the Rack
The rack comes with casters to help you move it easily from one
place to another.
To position the rack:
1. Allow the following minimum clearances:
For operation: Leave at least 46 cm (1.5 ft) of clearance in front
of the rack and 31 cm (1 ft) behind the rack to allow adequate
airflow.
For servicing: Allow 61 cm (2 ft) of space behind the rack and
165 cm (65 inches) in front of the rack.
2. After you have positioned the rack, locate the two stabilizing feet
and the two leveling feet placed just next to each caster. These
feet are used for support to ensure that the rack is stable and to
compensate for uneven floors when leveling the rack. See step
2 of Figure 5.
3. Pull out the two stabilizing feet. See step 3 of Figure 5.
4. Rotate each foot to adjust it. Continue adjusting the feet until the
rack is level. See step 4 of Figure 5.
Make sure the rack is stable.

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Step 2 Step 3
Step 4
Figure 5 Adjusting the Rack Feet

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4Opening and Closing the Door
The rack has one front door and one rear door. Both doors are
vented and can be opened easily.
To open the rack's front or rear door:
1. Slide the keylock cover as far as it will go, press the keylock
button to automatically release the handle. If the door is locked,
unlock it using the key.
2. Rotate the handle 90 degrees counter-clockwise until the latch
releases, and then pull open the door.
Step 1 Step 2
Figure 6 Opening the Rack Door
To close the rack's front or rear door:
1. Shut the door and rotate the handle clockwise to its original
position.
2. Push the handle until it clicks.

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5Removing and Reinstalling the Door
You may need to remove the front and rear doors when installing
components into the rack or when servicing.
To remove the front or rear door:
1. Open the door. See section 4.
2. Locate the release lever in the upper-right corner of the front
door or in the upper-left corner of the rear door.
3. Using your finger, pull down the release lever. This releases the
upper door holder.
4. When the upper holder is released, slightly lift the door to
remove the lower holder from its slot.
Figure 7 Removing the Rack Door
To reinstall the front or rear door:
1. Place the lower holder into its slot.
2. Using your finger, pull down the release lever while fitting the
upper holder into its slot.
Step 3
Step 4
Release lever

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6Removing and Replacing the Side
Panels
The rack comes with 4 side panels. When installing components or
when servicing, you may need to remove all side panels for quick and
easy access to the components.
To remove the side panels:
1. Each side panel has two screws. Using a coin or any flat-head
tool, rotate each screw 90 degrees clockwise (for the right
panels) or counter-clockwise (for the left panels) to release the
side panel. See A of Figure 8.
2. Use one hand to push the side panel (see B1 of Figure 8) and
another hand to support it at the bottom (see B2 of Figure 8).
3. When the side panel is released, pull it out to totally detach it
from the rack. Repeat the steps until all side panels are
removed. See C of Figure 8.
Figure 8 Removing the Side Panel
A
B1
B2
C

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To replace the side panels:
1. Locate the side of the panel that does not contain the screws.
2. Align the groove on that side of the panel with the edge of the
rack, then insert it. See A of Figure 9.
3. Push the other side until it is completely inserted. See B of
Figure 9.
4. Using a coin or any flat-head tool, rotate the two screws on the
panel 90 degrees counter-clockwise (for the right panels) or
clockwise (for the left panels) to secure the panel to the rack.
See C of Figure 9.
Figure 9 Replacing the Side Panel
A
B
C

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7the Rack
The following sections include instructions for installing UPS, server
monitors.
7.1
Cage nuts are use to secure systems and other components to the
vertical rails in the rack.
1. at the back of a rail.
2. Insert the small end of the cage-nut installation tool through the
opening in the rail and hook the tool over the top lip of the cage
3. back toward you until the top lip of the cage nut snaps into
position.
Repeat this process to install the other cage nuts in the
7.2 Loading an APC Uninterrupted Power Supply
The UPS protects the equipment from being damaged due to power
fluctuations. Since the UPS is extremely heavy, it should always be

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To load an APC UPS:
1. Unpack the mounting brackets that came with the APC UPS.
2. Adjust the mounting brackets to fit into the rack and then use two
M4 screws to afix them.
Figure 10 Adjusting the Mounting Brackets
1. Attach the mounting brackets to the rack using four M5 screws.
Figure 11 Attaching the Mounting Brackets to the Rack
4. Load the APC UPS into the rack.

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To avoid damage to the equipment or personal
injury, load the APC UPS at the bottom of the
rack only.
5. Secure the APC UPS at the front with four M5 washer-face
screws.
Figure 12 Loading the APC UPS

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7.3 Loading an Acer Altos 1100 Server
7.3.1 Installing the Mounting Rails
The rails allow the system to slide in and out of the rackmount for
maintenance purposes. Follow these steps to install the mounting
rails:
1. Extend the component rails from the mounting rails until the
component rail release latches click. Then hold down the latches
and slip the component rails out of the mounting rails. See
Figure 13.
Figure 13 Removing the Component Rail from the Mounting Rail
(for Acer Altos 1100 Server)
2. Put the component rails to one side.
3. Attach the mounting rails to the mounting brackets:
i. Notice that each mounting rail consists of:
•a fixed outer piece that screws into the mounting
bracket
•an inner sliding piece controlled by a steel ball gearing
movement. This inner sliding piece is not detachable.
latch
component rail
mounting rail

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ii. Align the screw holes on the mounting bracket and the
mounting rail.
iii. Extend the inner sliding piece of the mounting rail.
iv. Align the three holes on the mounting rail with the holes on
the mounting bracket.
v. Fasten the mounting rail to the mounting bracket with three
M5 screws. See Figure 14.
Figure 14 Aligning and Fastening the Mounting Rail to the
Mounting Bracket (for Acer Altos 1100 Server)
vi. Adjust the inner sliding piece to align the two holes on the
other end of the mounting bracket with the mounting rail. To
adjust the inner sliding piece, press the latch located at the
end of it and then push back the inner sliding piece. You can
only align one hole at a time. Continue moving the inner
sliding piece until you align one of the holes. See Figure 15.
Be careful when pressing the latch. Use a
screwdriver or any similar tool.
step iii
steps iv
and v
mounting rail
mounting
bracket

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Figure 15 Adjusting the Inner Sliding Piece to Align the Holes
(for Acer Altos 1100 Server)
vii. When you have aligned one of the holes, then insert one M5
screw into it. See A of Figure 16.
viii. Adjust the inner sliding piece until you align the other hole on
the end part of the mounting bracket, then insert one M5
screw. This securely fastens the mounting rail to the
mounting bracket. See B of Figure 16.
inner sliding
piece
mounting bracket
latch
mounting rail
mounting
bracket
hole
inner sliding piece
A

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Figure 16 Aligning the Bracket Hole and Fastening the Mounting
Rail to the Mounting Bracket (for Acer Altos 1100
Server)
5. Attach the mounting brackets with rail to the rack using four M5
screws. Make sure that the holes on the mounting brackets are
aligned with the holes on the rack. See the following figure:
Figure 17 Attaching the Mounting Brackets to the Rack (for Acer
Altos 1100 Server)
mounting bracket
mounting
rail
hole
inner sliding
piece
B