For Proper Operation - NEC Express5800/340Hb-R N8800-047F User Manual

For Proper Operation

Observe the following instructions for successful operation of the server. Failure to observe them
could lead to malfunction or breakdown.
Perform installation in a place where the system can operate correctly. For details, see the
separate volume "User's Guide (Setup)".
Before turning off the power or ejecting a disk, make sure that the DISK LED is off.
When you have just turned off the power, wait at least 30 seconds before turning it on
again.
Once you have turned on the server, do not turn it off until the "NEC" logo appears on the
screen.
Before you move the equipment, turn off the power and unplug the cord.
This server shall not assure reproduction of copy-protect CDs using reproduction
equipment if such disks do not comply with CD standards.
Clean the equipment regularly. (For procedures, see Chapter 6.) Regular cleaning is
effective in preventing various types of trouble.
Lightning may cause voltage sag. As a preventive measure, it is recommended to use UPS
(uninterruptible power supply).
This equipment does not support the connection through an UPS serial port (RS-232C) or
the control using PowerChutePlus.
Check and adjust the system clock before operation in the following conditions:
- After transporting the equipment
- After storing the equipment
- After the equipment halt under the conditions which is out of the guaranteed
environment conditions (Temperature: 10 to 35°C, Humidity: 20 to 80%).
Check the system clock once in a month. It is recommended to operate the system clock
using a time server (NTP server) if it is installed on the system which requires high level
of time accuracy. If the system clock goes out of alignment remarkably as time goes by,
though the system clock adjustment is performed, contact your sales agent.
When you store the equipment, keep it under storage environment conditions
(Temperature: -10 to 55°C, Humidity: 20 to 80%, non-condensing).
If NEC Express5800/ft series, the built-in optional devices, and the media set for the
backup devices (tape cartridges) are moved from a cold place to a warm place in a short
time, condensation will occur and cause malfunctions and breakdown when these are used
in such state. In order to protect important stored data and assets, make sure to wait for a
sufficient period of time to use the server or components in the operating environment.
Reference: Length of the time effective at avoiding condensation in winter (more than
Use the UPS having "Auto-return feature" that protects the UPS from rush current
generated at startup of the device by switching to bypass circuit with no voltage drop.
However, if the power supply failed while switching to a bypass circuit (for tens of
seconds), the normal operation of the device will not be guaranteed.
Make sure that your options are compatible with the system. If you attach any
incompatible option, there is a risk of malfunction that could lead to a breakdown.
10°C differences between room temperature and atmospheric temperature)
Disk devices: Approximately 2-3 hours
Tape media: Approximately 1 day
Precautions for Use 1-17