5137ch01.fm
Draft Document for Review October 14, 2014 10:19 am
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IBM Power Systems E870 and E880 Technical Overview and Introduction
1.12.3 IBM 7953 model 94Y rack
The 2.0-meter (79.3 inch) model 94Y rack has the following features:
42U (EIA units)
Weights:
– Base empty rack: 187 kg (221 lb.)
– Maximum load limit: 664 kg (1460 lb.)
The IBM 42U Slim Rack (7953-94Y) differs from the IBM 42U enterprise rack (7014-T42) in
several aspects. Both provide 42U of vertical space, are 1100 mm deep, and have an interior
rail-to-rail depth of 715 mm. However, the IBM 42U Slim Rack is 600 mm wide; the T42 is
645 mm wide with side covers. For clients with 2-foot floor tiles, the extra 45 mm (1.77-inch)
width of the enterprise rack can sometimes cause challenges when cutting holes in the floor
tiles for cabling.
The 42U Slim Rack has a lockable perforated front steel door, providing ventilation, physical
security, and visibility of indicator lights in the installed equipment within. In the rear, either a
lockable perforated rear steel door (#EC02) or a lockable rear door heat exchanger (#EC15)
is used. Lockable optional side panels (#EC03) increase the rack’s aesthetics, help control
airflow through the rack, and provide physical security. Multiple 42U Slim Racks can be bolted
together to create a rack suite (indicated with feature #EC04).
1.12.4 Feature code #0551 rack
The 1.8-meter rack (#0551) is a 36U (EIA units) rack. The rack that is delivered as #0551 is
the same rack delivered when you order the 7014-T00 rack. The included features might
differ. Several features that are delivered as part of the 7014-T00 must be ordered separately
with the #0551. The #0551 is not available for initial orders of Power E870 and E880 servers.
1.12.5 Feature code #0553 rack
The 2.0-meter rack (#0553) is a 42U (EIA units) rack. The rack that is delivered as #0553 is
the same rack delivered when you order the 7014-T42. The included features might differ.
Several features that are delivered as part of the 7014-T42 or must be ordered separately
with the #0553.
1.12.6 The AC power distribution unit and rack content
For rack models T00, T42 and the slim 94Y, 12-outlet PDUs are available. The PDUs
available include:
PDUs Universal UTG0247 Connector (#7188)
Intelligent PDU+ Universal UTG0247 Connector (#7109).
Weight calculation: Maximum weight limits must include everything that will be installed
in the rack. This must include servers, I/O drawers, PDUs, switches, and anything else
installed. In zone 4 earthquake environments the rack should be configured starting with
the heavier drawers at the bottom of the rack.
PDU mounting: Only horizontal PDUs are allowed in racks hosting Power E870 and
Power E880 system. Vertically mounted PDUs limit access to the cable routing space on
the side of the rack and cannot be used.
