Item Operating Not Operating In Storage
Notes:
1. Environmental specification for operation should be met before the storage system is powered on.
Maximum temperature of 90°F / 32°C should be strictly met at air system air inlet.
2. Recommended temperature range is 21 to 24°C
3. Non-operating condition includes both packing and unpacking conditions unless otherwise specified.
4. The system and components should be packed in factory packing for shipping and storing
5. No condensation in and around the drive should be observed under any conditions. No condensation
in and around the drive should be observed under any conditions.
6. The above specifications of vibration are applied to all three axes
7. See ASTM D999-01 The Methods for Vibration Testing of Shipping Containers.
8. See ASTM D5277-92 Test Method for Performing Programmed Horizontal Impacts Using an Inclined
Impact Tester.
9. See ASTM D6055-96 Test Methods for Mechanical Handling of Unitized Loads and Large Shipping
Cases and Crates.
10. Time is 5 seconds or less in case of the testing with device resonance point (6 to 7Hz.
Airflow
The fans in both the control chassis and the drive trays contain fans to
circulate air through the units from front to back. Air flows in through the
front bezel to the rear of the component and exits through the perforations in
the rear door. The racks do not contain fans.
Equipment noise
The acoustic emission values [loudness in dB (A)] for the HUS VM storage
system storage system are:
• Front/rear = 65 dB (A)
• Both sides = 65 dB (A)
Service clearance, floor cutout, and floor load rating
This section describes the service clearance requirements for the HUS VM
storage system, based on the clearance and required floor cutouts for
cabling.
• Make sure that the service clearance for maintenance is available.
• Do not use the clearance space for storage
• The floor cutout area and dimensions correspond to 19-inch rack
specifications
• Hitachi Data Systems recommends that you install the grid panel over
450 x 450 mm on the front side of the rack.
• The floor must have a load rating between 660 lbs (300 Kg) and 1,540 lb
(700 Kg) per square meter.
Site preparation
4-15
Hitachi Unified Storage VM Block Module Hardware User Guide
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