3PAR InServ® E-Class/F-Class Storage Server Physical Planning Manual (320 - 200120 Rev F, September 2010)

4.11
3PAR InServ E-Class/F-Class Storage Server Physical Planning Manual
◆ The resistance between adjacent tiles should not be less than 150 kilohms when
measured between any points on the floor, spaced 36 in. (91.5 cm) apart.
◆ Maintenance of antistatic floor covering should be performed according to supplier's
recommendations.
4.3.7 Hot-Aisle/Cold-Aisle Cooling Layout
Air flows through the InServ Storage Servers from the front to the rear, so when installing
multiple servers in the same room, consider facing each pair of servers in a front to rear
configuration. This allows cool air to be circulated through the rows in the front of the servers
and exhausted through rows in back. This is referred to as a hot-aisle/cold-aisle layout and
eliminates the direct transfer of hot exhaust air from one server into the intake air of another
as shown in Figure 4-7.
Figure 4-7. Hot-Aisle/Cold-Aisle Layout
Form rows of racks or cabinets perpendicular to air conditioners. This formation facilitates an
unobstructed flow of heated air down the aisles to the air conditioner return ducts. Heated air
must not be forced to travel over or between the cabinets to get to the air conditioner return
ducts. Doing so could heat the air in the cold aisles. Ensure that any free-standing equipment
does not allow air to flow between the hot and cold aisles.
0061_T_R1
Floor
Perforated
Tiles
Cold Aisle
(Systems
Front-to-Front)
Cold Aisle
(Systems
Front-to-Front)
Hot Aisle
(Systems
Back-to-Back)
Perforated
Tiles
HVAC