HP MSA System Racking Instructions

3. Install two hanger pins into the front and one into the rear of each
rail set.
NOTE:
If the hanger pins are pre-installed in the rail sets, move
ahead to Step 3: Install rails on the rack.
Step 3: Install rails on the rack
1. Use the hanger pins to hang the rails on the rack. The rails are
labeled Left and Right to indicate their position in the rack when
viewed from the front.
• Front — Align the middle screw hole with the middle cage nut.
• Rear — Align the two screw holes with the cage nuts.
2. Secure the front of each rail to the rack with one 10-32 x 5/8 Phillips
flat-head screw (middle hole).
3. Secure the rear of each rail to the rack with two 10-32 x 3/4 Phillips
truss-head screws.
4. Tighten the screws holding the front and rear rail brackets together.
Step 4: Prepare enclosure
Attach one side bracket to each side of the enclosure, using four 8-32 x
3/16 Phillips flat-head screws. Position the bracket so that holes in the
bracket align with the row of holes near the top of the enclosure chassis.
Step 5: Install enclosure in the rack
CAUTION:
Lifting and positioning a disk enclosure requires two people.
You can lighten the enclosure by removing hard drives and rear
components. If you remove components, observe proper ESD
precautions.
1. Slide the enclosure all the way into the rack on the rail ledges (1).
2. Attach the front of the enclosure to the rack with four 10-32 x 3/4
Phillips truss-head screws (2).
3. From the rear of the rack, attach the enclosure side brackets to the
rails (3) using two 6-32 x 1/4 Phillips pan-head screws.
NOTE:
Screw access can be improved by rotating the power supply
latch downward, especially on the right side. Be sure to
re-latch the power supply when done.
Step 6: Install enclosure ears
The enc losure is no w ready for cabling and configuration. See the storage
enclosure user guide for further instructions.
Detailed site requirements
When installing the enclosure in a rack, select a location that meets the
environmental standards described in this section.
Space and airflow requirements
To allow for servicing and adequate airflow, observe the following space
and airflow requirements:
• Leave minimum clearance of 63.5 cm (25 in) in front of the rack.
• Leave minimum clearance of 76.2 cm (30 in) behind the rack.
• Leave minimum clearance of 121.9 cm (48 in) from the back of the
rack to the back of another rack or row of racks.
HP enclosures draw in cool air through the front and expel warm air
through the rear. The front and rear rack doors must be adequately
ventilated to allow ambient room air to enter the cabinet, and the rear
door must be adequately ventilated to allow the warm air to escape from
the cabinet.
CAUTION:
To prevent improper cooling and damage to the equipment:
• Do not block the ventilation openings.
• Always use blanking panels to fill empty spaces in the rack.
Temperature requirements
To ensure continued safe and reliable equipment operation, install or
position the enclosure in a well-ventilated, climate-controlled environme nt.
The maximum recommended ambient operating temperature (TMRA) for
most enclosure products is 35°C (95°F). The temperature in the room
where the rack is located must not exceed 35°C (95°F).
CAUTION:
To reduce the risk of damage to the equipment when installing
third-party options:
• Do not permit optional equipment to impede airflow around
the enclosure or to increase the internal rack temperature bey-
ond the maximum allowable limits.
• Do not exceed the manufacturer’s recommended ambient op-
erating temperature (TMRA).