NEC Express5800/R140a-4, User Manual

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1-12 Notes on Using Your Server
FOR PROPER OPERATION
Observe the following notes for successful operation of the server. Use of the server ignoring the
notes will cause malfunctions or failures of the server.
„
Install the server in a place that meets requirements for successful operation. For details,
see Chapter 3, "Setting Up Your Server."
„
Make sure to power off the server before connecting or disconnecting cables between the
server and peripheral devices.
„
Verify that the access LED on the server is unlit before turning off the server or ejecting
the floppy disk.
„
The server management logic on your system board monitors and logs system voltage
changes. When plugging the power cord to the system, you may experience 30 seconds
delay from the time you press the POWER/SLEEP switch on the front panel. This is
normal system operation and is required by the server management logic.
„
When you have just turned off the DC power of the server, wait at least 30 seconds before
turning it back on.
„
When you have just turned off the AC power of the server, wait at least 60 seconds before
turning it back on.
„
Do not turn off the server until characters following the "NEC" logo appear on the screen.
The time until the characters appear depends on your system configuration.
Approximately, it may take one to five minutes.
„
Turn off the power and unplug the power cord from the outlet before relocating the server.
„
Some software includes a command to eject the optical disk drive tray. Make sure that the
front bezel is removed before running the command. Running this command with the
front bezel installed may cause the optical disk drive tray or the media to hit against the
front bezel, resulting in a failure of the server
„
Clean the server on a regular basis. (See Chapter 7 for cleaning.) Regular cleaning
proactively prevents various failures of the server.
„
Lightning may cause a momentary voltage drop. To prevent this problem, it is
recommended to use of an uninterruptible power supply unit.
„
Check and adjust the system clock before the operation if any of the following conditions
is applicable.
– After carriage of the server
– After storage of the server
– After the server is entered into the pause state under the environmental condition
enduring the server operation (temperature: 10°C - 35°C, humidity: 20% - 80%)
„
Check the system clock at the rough rate of once per month. When the system clock is
installed in a system requiring high time precision, it is recommended to use a time server
(NTP server).
If the system clock is remarkably delayed or advanced as the passage of time in spite of
adjustment, contact your sales agent to ask maintenance.