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Electrical guidelines
•
These enclosures work with single-phase power systems having an earth ground connection. To reduce the risk of
electric shock, do not plug an enclosure into any other type of power system. Contact your facilities manager or a
qualified electrician if you are not sure what type of power is supplied to your building.
•
Enclosures are shipped with a grounding-type (three-wire) power cord. To reduce the risk of electric shock, always
plug the cord into a grounded power outlet.
•
Do not use household extension cords with the enclosures. Not all power cords have the same current ratings.
Household extension cords do not have overload protection and are not meant for use with computer systems.
Ventilation requirements
Refer to
"Environmental requirements" (page 71)
•
Do not block or cover ventilation openings at the front and rear of an enclosure. Never place an enclosure near a
radiator or heating vent. Failure to follow these guidelines can cause overheating and affect the reliability and
warranty of your enclosure.
•
Leave a minimum of 15 cm (6 inches) at the front and back of each enclosure to ensure adequate airflow for cooling.
No cooling clearance is required on the sides, top, or bottom of enclosures.
•
Leave enough space in front and in back of an enclosure to allow access to enclosure components for servicing.
Removing a component requires a clearance of at least 37 cm (15 inches) in front of and behind the enclosure.
Cabling requirements
•
Keep power and interface cables clear of foot traffic. Route cables in locations that protect the cables from damage.
•
Route interface cables away from motors and other sources of magnetic or radio frequency interference.
•
Stay within the cable length limitations.
Management host requirements
A local management host with at least one USB Type B port connection is recommended for the initial installation and
configuration of a controller enclosure. After you configure one or both of the controller modules with an Internet
Protocol (IP) address, you then use a remote management host on an Ethernet network to configure, manage, and
monitor.
NOTE: Connections to this device must be made with shielded cables–grounded at both ends–with metallic RFI/EMI
connector hoods, in order to maintain compliance with FCC Rules and Regulations.
Physical requirements
The floor space at the installation site must be strong enough to support the combined weight of the rack, controller
enclosures, drive enclosures (expansion), and any additional equipment. The site also requires sufficient space for installation,
operation, and servicing of the enclosures, together with sufficient ventilation to allow a free flow of air to all enclosures.
Table 28
and
Table 29
complement of disk drives, two controller or expansion modules, and two power supplies installed. "2U12" denotes the
LFF enclosure (12 disks) and "2U24" denotes the SFF enclosure (24 disks).
70
Specifications and requirements
for detailed environmental requirements.
list enclosure dimensions and weights. Weights are based on an enclosure having a full
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Troubleshooting
