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viii Hitachi High-performance NAS Platform
Electrical Precautions
• Provide a suitable power source with electrical overload protection to meet the
power requirements of the system. The power requirements per cord are - North
America: 2 phase, 208Vac, 24A max; 1 phase 110Vac, 16A max. Europe: 230Vac,
16A max.
• Provide a power cord suitable for the country of installation if a power cord is not
supplied.
• Provide a safe electrical ground connection to the power cord (check the
grounding of an enclosure before applying power).
• Only operate the High-performance NAS Platform from nominal mains input
voltages in the range 100 - 240Vac, 60-50Hz, 7-3.5A.
Caution
:Turn off all power supplies or remove all power cords before undertaking
servicing of the system.
• Unplug a system component if it needs to be moved or if it is damaged.
Note: For additional data protection, it is recommended to use an external UPS to
power the High-performance NAS Platform. Also, each of the redundant power
supplies in the High-performance NAS Platform and in the storage subsystems
should be operated from a different mains power circuit in order to provide a degree
of protection from mains power supply failures. In the event that one circuit fails,
the other will continue to power the High-performance NAS Platform and the
storage subsystem.
Data Security
• Each storage enclosure contains multiple removable hard disk drive (HDD)
modules. These units are fragile . Handle them with care and keep them away
from strong magnetic fields.
• All supplied plug-in modules and blanking plates must be in place to complete the
internal circuitry and enable air to flow correctly around an enclosure.
• Using the system for more than a few minutes with modules or blanking plates
missing can cause an enclosure to overheat, leading to power failure and data
loss. Such use may invalidate the warranty.
• A loss of data can occur if a hard drive module is removed. Immediately replace
any modules that are removed. If a module is faulty, replace it with one of the
same type, of at least the same capacity and speed.
• Always shut down a High-performance NAS Platform before it is moved, switched
OFF, or reset.
• Maintain backup routines.