IBM TotalStorage SAN256N Director 2045-N16, Installation And Maintenance Manual, Page: 59 / 157

Chapter 3. Installation
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8. Insert eight 10/32 x 3/8 PPH screws and #10 washers through the bracket mounting
holes. Tighten the screws to secure the brackets/chassis to the cabinet rails.
9. Using four 10/32 x 3/8 PPH screws and #10 washers, mount two chassis support
brackets (5316325-201) at the rear of the cabinet as shown below. The brackets
should be positioned/centered approximately between the two power supply
assemblies. Adjust the support brackets by sliding them inward so the brackets press
firmly against the sides of the SAN256N chassis. Tighten the screws to secure the
brackets to the cabinet rails and the sides of the chassis.
10. Verify that all front and rear chassis / mounting bracket attaching hardware is
installed and tight; and that the chassis is securely mounted to the cabinet.
11. Carefully lower the blades from underneath the chassis and remove the lifting
device from the cabinet.
12. Using 6-32 x 3/8 PPH screws, install two vertical cable management trays to the
front of the SAN256N chassis.
Cabinet installation
Cabinet installation considerations
The following conditions should be considered when installing a SAN256N director:
• Elevated operating ambient - If a SAN256N chassis is installed into the system
cabinet, the operating ambient temperature of the cabinet environment may be
greater than room ambient. Therefore, consideration should be given to installing the
cabinet in an environment compatible with the maximum ambient temperature (Tma)
specified by the manufacturer.
• Reduced air flow - Installation of the SANC40 cabinet should be such that the amount
of air flow required for safe operation of the equipment is not compromised.
• Mechanical loading - Mounting of a SAN256N chassis into the system cabinet should
be such that a hazardous condition is not achieved due to uneven mechanical
loading.
• Circuit overloading - Consideration should be given to the connection of the SAN256N
director and associated equipment to the supply circuit and the effect that overloading
of the circuits might have on over-current protection and supply wiring. Appropriate
consideration of equipment nameplate ratings should be used when addressing this
concern.
• Reliable earthing - Reliable earth grounding of the SANC40 cabinet should be
maintained. Particular attention should be given to supply connections other than
direct connections to the branch circuit (e.g. use of power strips).
Installation procedures
The following step-by-step procedures describe how to physically install the SAN256N
director, factory shipped, as follows:
• A SAN256N director factory installed chassis, in a 40U cabinet
The SAN256N chassis is designed to be installed into a IBM-supplied 40U cabinet. If the
SAN256N chassis is to be installed in a non-IBM-supplied cabinet, the customer must
contact the IBM Account Executive and Technical Support representatives. The IBM
Account Executive and Technical Support representatives must review and approve the