HP D3000 Disk Enclosures - Manual (Page 35)

Connecting power cords
When connecting power cords, use the cords shipped with the disk enclosure.
The power cord should be approved for use in your country. The power cord must be rated for the
product and for the voltage and current marked on the electrical ratings label of the product. The
voltage and current rating for the cord should be greater than the voltage and current rating marked
on the product. In addition, the diameter of the wire must be a minimum of 1.00 mm
2
or 18 AWG,
your maximum length may be up to 3.66 m (12 ft).
After power is supplied to the disk enclosure, the power supply automatically senses the input
voltage and the power supply LED illuminates as solid green.
To protect the system from power-failure-related downtime, each disk enclosure ships standard with
a redundant power supply. Depending how you connect the power supplies to the power source,
you can eliminate downtime caused by power-related failures.
Level of Protection Connection Method
Protects you from downtime when one of the disk enclosure power supplies fails. Connected to:
•
One power source The remaining power supply/fan module can operate the disk enclosure until you install
a replacement module.
Protects you from downtime when one of the disk enclosure power supplies fails. Connected to:
•
Two separate power
sources Protects you from data loss when one of your power sources fails, due to a pulled cable
or tripped breaker.
The remaining power source can power the disk enclosure until the failed power source
is restored or relocated. Depending on the cause and duration of the power outage, you
can use this time to properly shut down your storage subsystem.
Protects you from downtime when one of the disk enclosure power supplies fails. Connected to:
Protects you from data loss when one or both of your power sources fails, due to a pulled
cable, tripped breaker, or local power outage. •
Two UPS
•
Two separate power
sources
The remaining power source or the UPS will power the disk enclosure until power is
restored to the source. Depending on the cause and duration of the power outage, you
can use this time to properly shut down your storage subsystem.
WARNING! To reduce the risk of electric shock or damage to the equipment:
•
Do not disable the power cord grounding plug. The grounding plug is an important safety
feature.
•
Plug the power cord into a grounded (earthed) electrical outlet that is easily accessible at all
times.
•
Route the power cord so that it is not likely to be walked on or pinched by items placed against
it. Pay particular attention to the plug, electrical outlet, and the point where the cord is attached
to the disk enclosure.
Connecting SAS cables and power cords 35