IBM 9008-22L Site And Hardware Planning Download Page 89

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Figure 28. Model 9080-M9S rear rack clearance (narrow rack bracket installation)

• Only ac power drawers are supported in the rack or cabinet. It is strongly recommended to use a power

distribution unit that meets the same specifications as IBM power distribution units to supply rack

power (for example, feature code 7188). Rack or cabinet power distribution devices must meet the

drawer voltage, amperage, and power requirements, as well as that of any additional products that are

connected to the same power distribution device.
The rack or cabinet power receptacle (power distribution unit, uninterruptible power supply, or multi-

outlet strip) must have a compatible plug type for your drawer or device.

• The rack or cabinet must be compatible with the drawer-mounting rails. The rail-mounting pins and

screws must fit securely and snugly into the rack or cabinet rail-mounting holes. The mounting rails and

mounting hardware that are provided with IBM products are designed and tested to safely support the

product during operation and service activities, and to safely support the weight of your drawer or

device. The rails must facilitate service access by allowing the drawer to be safely extended, if

necessary, forward, backward, or both. Some rails, with IBM features for non-IBM racks, provide

drawer-specific anti-tip brackets, rear lock-down brackets, and cable management guides that require

clearance on the rear side of the rails.
Note: If the rack or cabinet has square holes on the mounting flanges, an adapter might be required.

• The rack or cabinet must have stabilization feet or brackets installed in the front of the rack, or have

another means of preventing the rack/cabinet from tipping while the drawer or device is pulled into its

extreme front service positions.
Note: Examples of some acceptable alternatives: The rack or cabinet might be securely bolted to the

floor, ceiling or walls, or to adjacent racks or cabinets in a long and heavy row of racks or cabinets.

• If present, front and rear doors must be able to open far enough to provide unrestrained access for

service or be easily removable. If doors must be removed for service, it is the responsibility of the

customer to remove them before service.

• Front and rear doors must not violate the previously defined front and rear rack space that is required

for the system.

• The rack or cabinet must provide adequate front-to-back ventilation.

Note: Rack doors must be fully perforated to provide proper front-to-back airflow for mounted

Information Technology (IT) equipment. The total door area must result in a minimum of 45% opening

area. Rear doors must not create back pressure that can interfere with the server fan operation.

General safety requirements for IBM products installed in a non-IBM rack or cabinet
The general safety requirements for IBM products that are installed in non-IBM racks are:

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