1.     Configuration dependent, base rack weight plus the weight of the drawers mounted in the rack. The rack can 
support up to a maximum weight of 35 lbs/EIA (Unit). 
2.    The total rack power should be derived from the sum of the power used by the drawers in the rack. 
3.    The Power Distribution Panel (PDP) on the DC powered rack can hold up to eighteen (nine per power source) 48 
volt 20 to 50 amp circuit breakers (configuration dependent). Each power source supports up to 8.4 kVA. 
4.    Each ac Power Distribution Bus (PDB) can supply 4.8 kVA. A rack can have up to four PDBs as required by the 
drawers mounted in the rack. 
5.    All rack installations require careful site and facilities planning designed to both address the cumulative drawer 
heat output and provide the airflow volumes rates necessary to comply with drawer temperature requirements.
 
  
Model T42 Rack 
 
Dimensions    
Height  2015 mm 79.3 in. 
Capacity  42 EIA Units 
With PDP - DC only  Not applicable 
Width without side panels  623 mm 24.5 in. 
With side panels  644 mm 25.4 in. 
Depth with rear door only  1042 mm 41.0 in. 
Depth with rear door and 
RS/6000 style front door 
1098 mm 43.3 in. 
pSeries (sculptured) style 
front door 
1147 mm 45.2 in. 
Weight    
Base Rack  261 kg 575 lbs. 
Full Rack¹  930 kg 2045 lbs
See “T00 and T42 Rack Weight Distribution and Floor Loading” on page 35.
 
Service Clearance  Recommended minimum vertical service clearance from floor is 2439 mm or 8 feet. 
All Other Specifications    For all other technical information, see the table for “Model T00 Rack” on page 31. 
 
 
 
32  Site and Hardware Planning Information