14 IBM System p5 520 and 520Q Technical Overview and Introduction
Optional Rear Door Heat eXchanger (FC 6858)
Improved cooling from the heat exchanger enables the client to more densely populate
individual racks freeing valuable floor space without the need to purchase additional air
conditioning units. The Rear Door Heat eXchanger features:
Water-cooled heat exchanger door designed to dissipate heat generated from the back o f
computer systems before it enters the room
An easy-to-mount rear door design that attaches to client-supplied water, using industry
standard fittings and couplings
Up to 15 KW (approximately 50,000 BTUs/hr.) of heat removed from air exiting the bac k of
a fully populated rack
One year, limited warranty
Physical specifications
The physical specifications are:
Approximate height: 1945.5 mm (76.6 in.)
Approximate width: 635.8 mm (25.03 in.)
Approximate depth: 141.0 mm (5.55 in.)
Approximate weight: 31.9 kg (70.0 lb.)
Client responsibilities
The client responsibilities are:
Secondary water loop (to the building chilled water)
Pump solution (for secondary loop)
Delivery solution (hoses and piping)
Connections: standard 3/4-inch internal threads
1.5.3 IBM 7014 Model S11 rack
The Model S11 rack satisfies many light-duty requirements for organizing smaller rack-mount
servers and expansion drawers. The 0.6-meter-high rack has a perforated, lockable front
door; a heavy-duty caster set for easy mobility; a complete set of blank filler panels for a
finished look; EIA unit markings on each corner to aid assembly; and a retractable stabilizer
foot. The Model S11 rack has the following specifications:
Width: 520 mm (20.5 in.) with side panels
Depth: 874 mm (34.4 in.) with front door
Height: 612 mm (24.0 in.)
Weight: 37 kg (75.0 lb.)
The S11 rack has a maximum load limit of 16.5 kg (36.3 lb.) per EIA unit for a maximum
loaded rack weight of 216 kg (475 lb.).
1.5.4 IBM 7014 Model S25 rack
The 1.3-meter-high Model S25 rack satisfies many light-duty requirements for organizing
smaller rack-mount servers. Front and rear rack doors include locks and keys, helping keep
your servers secure. Side panels are a standard feature, simplifying ordering and shipping.
This 25U rack can be shipped configured and can accept server and expansion units up to
28-inches deep.
The front door is reversible so that it can be configured for either left or right opening. The rear
door is split vertically in the middle and hinges on both the left and right sides. The S25 rack
has the following specifications: