Hitachi HUS VM - Grounding Requirements; Environmental Requirements

Grounding requirements
All powered equipment should be properly grounded for operation and safety.
Ground integrity should be maintained for each connection made in a reliably
grounded outlet, such as with the PDUs in the rack.
All system cabinets and racks must be grounded to the CO GRD system,
using a 6 AWG (or larger) Copper cable, terminated with listed 2-hole
compression lugs.
Note: To reduce the risk of electric shock or damage to equipment, follow
proper grounding procedures and do not tamper with the pre-installed PDUs.
The rack connects to a grounded (earth) power outlet.
Environmental requirements
Table C-5 Rack internal environmental specifications
1
on page C-21below
lists the environmental specifications for the HUS VM systems when mounted
in a Hitachi Data Systems rack. These specifications must be observed to
ensure the proper operating and storage environment for the storage
equipment in the rack.
The following environmental conditions may damage or decrease the life of
the storage system:
• Exposure to direct sunlight
• Rapid change in temperature or humidity (such as being near an air-
conditioner)
• Proximity (near) to a device which generates electrical noise, such as the
ungrounded motor of an air conditioner or washing machine
• Proximity (near) to a device that generates a strong magnetic field (Do
not bring a magnet close to the rack or the HUS VM system.)
• Exposure to dust, dirt, or vibration
Note: To reduce the risk of damage to equipment during installation, do not
impede airflow to products already mounted in the rack and do not exceed
internal rack specifications listed in the following table.
Table C-5 Rack internal environmental specifications
1
Item Specification
Temperature In operation 10 to 40° C
Not-operating -10 to 50° C
In transport/storage -30 to 60 °C
Temperature change rate 10° C or less per hour
Humidity In operation 8 to 80%
In non-operation 8 to 90%
Maximum wet bulb temp. 29° C (non condensing)
Rack information
C-21
Hitachi Unified Storage VM Block Module Hardware User Guide