RAID Xanadu User Manual page 10

WARNING
Be sure to perform backup of the data of the disk array unit regularly.
It is recommended that particularly important files be backed up on media such as
magnetic tape.
Reason: The disk array unit, which is available on strictly hard failures, cannot cope
with unexpected vibrations or shocks, power cuts due to electrical outages, or soft
faults. Damage from soft faults can be kept to a minimum by performing backups.
A hard failure is a phenomenon such as a disk drive being damaged or a disk drive
being unable to rotate.
A soft fault is a phenomenon such as a human error or a host malfunctioning.
It is recommended that the latest software and firmware for the disk array unit be
used.
The disk array unit could be destroyed if you power it off or it becomes powered off
while updating its firmware. Be sure that it does not become powered off during a
firmware update.
Do not power off the disk array unit or the host unit or reset the host unit if the
ACTIVE/FAULT LED (green or orange) of a disk drive of the disk array unit is
blinking, if the host unit shows that a disk is being accessed, or if it shows that
initialization is in progress.
If a fault occurs in the disk array unit, the SERVICE LED of the disk array unit and the
FAULT LED corresponding to the faulted component illuminate.
When faults occur, contact your sales or maintenance service agent.
Cautions concerning power
If a component of the disk array unit normally is not fully inserted or is loose, or if a
cable normally is not fully inserted or is loose, it could cause failure.
Always connect all power supplies of the disk array unit and pass current through
them. If no current is passed, data is not duplicated and data may be lost. A power
supply that is not connected is judged to be abnormal.
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