Rack Requirements

This section provides the requirements for the following type of racks, assuming an external ambient air temperature range of 32 to 104oF (0 to 40oC).
  • Standard open racks
  • Two-post Telco racks

The rack-mount kit enables you to install the switch into racks of varying depths. You can use the rack-mount kit parts to position the switch with easy access to either the port connections end of the chassis or the end of the chassis with the fan and power supply modules. For instructions on how to install the rack-mount kit, see the Installing the Switch section.

General Requirements for Racks

The rack must be one of the following types.
  • Standard 19-inch four-post EIA rack, with mounting rails that conform to English universal hole spacing per section 1 of ANSI/EIA-310-D-1992. See the section entitled "Standard Open Rack Requirements."
  • Standard two-post Telco rack, with mounting rails that conform to English universal hole spacing per section 1 of ANSI/EIA-310-D-1992.

Rack Requirements for IBM SAN50C-R Chassis

The rack must also meet the following requirements.
  • The minimum vertical rack space per chassis is 3.5 in. (8,8 cm).
  • The width between the mounting rails must be at least 17.75 in. (45.1 cm). For four-post EIA racks, this is the distance between the two front rails and rear rails.

Standard Open Rack Requirements

In addition to the requirements listed in the “General Requirements for Racks” section on page 1-1, if you are mounting the chassis in an open rack (no side panels or doors), ensure that the rack meets the following requirements.
  • The minimum width between two front-mounting rails must be two RU (rack unit), equal to 16 inches (4 0 cm).
  • The minimum vertical rack space per chassis is 2 RU (rack unit), equal to 3.5 inches (8.89 cm).
Note: The side rail-mount brackets provided with the IBM SAN50C-R switch require an additional height of 0.75 inches (1.9 cm). They are required during the installation of the IBM SAN50C-R switch only, and can be removed or left installed once the front-mounting brackets are securely fastened to the mounting rails.

Requirements Specific to Two-Post Telco Rack

In addition to the requirements listed in the “General Requirements for Racks” section on page 1-1, two-post Telco racks must meet the following requirements.
  • The minimum width between the two mounting rails must be at least 17.75 inches (45.1 cm).
  • The distance between the chassis air vents and any walls should be 2.5 inches (6.4 cm).

Required Equipment

You need the following equipment for this installation.
  • Number 2 Phillips screwdriver
  • Tape measure and level (to ensure shelf brackets are level)