Sun Microsystems Fire V490 Setup And Rackmounting Manual page 62

Note – The system is fully serviceable in a 4-post cabinet when it is extended on its
slide assemblies.
TABLE A-1
Cabinet Feature
Load-bearing capacity
Vertical space requirements
Doors and panels
Anti-tip protection
52 Sun Fire V490 Server Setup and Rackmounting Guide • August 2004
4-Post Rack Requirements
Requirement
The rack must firmly support the weight of as many
Sun Fire V490 servers as you are installing into the
cabinet (each server weighs up to 97 lb/44 kg), plus
the weight of the rackmounting hardware, and the
weight of any other installed devices.
Each server requires five rack units (8.75 in/22.22 cm) of
vertical space for rack installation. A 72-inch (184-cm) Sun
cabinet ships with a power sequencer so that it can hold up
to seven servers (with a power sequencer there are 36 rack
units of usable space). Note: If the servers are fully
populated, the cabinet and power sequencer will only
support six servers. See the Site Planning Guide for Entry-
Level Servers Version 1.5 for more information.
If you are using a Sun expansion cabinet, you can remove
the front and back doors and the side panels to increase
access to the system. Otherwise, see the instructions
provided with the cabinet.
The cabinet must be bolted securely to the floor or equipped
with two sturdy and extendable anti-tip legs. You must
prevent the cabinet from tilting forward when one or more
systems or devices are fully extended out the front of the
cabinet.