A P P E N D I X B - Requirements for Sun Rack 900 Cabinets

A P P E N D I X B

Requirements for Sun Rack 900 Cabinets

The table below lists the specifications of the Sun Rack 900 cabinet and the operating location that are applicable to the rack installation requirements of the Sun Fire V890 server. You need one Sun Fire V890 server rackmounting kit for each Sun Fire V890 server that you will install into the Sun Rack 900 cabinet.

Cabinet Feature	Requirement
Load-Bearing Capacity	The Sun Rack 900 cabinet firmly supports the weight of two Sun Fire V890 servers and the mounting hardware (up to 700 lb, 317.6 kg, depending on the server configuration).
Anti-Tilt Protection	The Sun Rack 900 cabinet provides several anti-tilt features, including a sturdy anti-tip bar that prevents the cabinet from moving or tilting forward when one or more systems or devices are fully extended from the front of the cabinet.
Vertical Space	The Sun Rack 900 cabinet provides 38 rack units of vertical space. Each Sun Fire V890 server requires 17 rack units (29.75 inches, 75.6 cm) of vertical space for cabinet installation.
Minimum Service Access	An area not less than 3 feet (91 cm) deep must be available in back of the cabinet for server installation and service access. An area not less than 48 inches (122 cm) deep must be available in front of the cabinet for server installation and server access. An area not less than 36 inches (91 cm) wide must be available on each side of the server when the server is fully extended on the tray assembly. When fully extended on the tray assembly, the server will protrude 32.9 inches (83.6 cm) forward of the cabinet's front vertical mounting rails.
Airflow	For proper ventilation of the server, the front and rear doors of the Sun Rack 900 cabinet comply with the following minimum open area requirements. 60 percent of the area of the front door that is directly in front of the server is open. 63 percent of the area of the rear door that is directly behind the server is open. The doors of the Sun Rack 900 cabinet meet the open area requirements of the Sun Fire V890 server.
Vertical Mounting Rails	The Sun Rack 900 cabinet has two pairs of vertical mounting rails (one pair in front, one in back) that conform to the EIA (RETMA) standard for mounting hole spacing. Front-to-rear rail spacing of the Sun Rack 900 cabinet is 27 inches (68.58 cm) from the outside face of the front rail to the outside face of the rear rail. Front and rear vertical rail mounting faces of the Sun Rack 900 cabinet are parallel to each other and to the front plane of the cabinet.
EMI	Electromagnetic interference (EMI) shielding requirements are met by the system chassis and metal side doors, which must remain in place when the unit is installed in the cabinet.
Fire Containment	The Sun Rack 900 cabinet meets Underwriters Laboratories, Inc. and TUV Rheinland of N.A. requirements for fire containment.