l When you perform the hardware loopback test by connecting the cable to the optical
interface, you must add an attenuator to avoid damage to the optical module as a result of
strong optical power.
l When using the Optical Time Domain Reflectometer (OTDR), you need to disconnect the
cable between the peer equipment and the local equipment to avoid damage to the optical
module as a result of strong optical power.
l Do not remove or insert the optical interfaces connecting to cables at will.
1.1.5 Short Circuit
When installing or maintain the equipment, use and put the tools according to the regulations to
avoid short circuit as a result of metallic tools.
CAUTION
l Do not put tools, such as the screwdriver on the air intake board of the enclosure; otherwise,
short circuit may be caused.
l Do not drop screws into the enclosure or the equipment; otherwise, short circuit may be
caused.
1.1.6 Operations on the Equipment with Power On
When you operate on the equipment when it is powered on, ensure that you take the safety
precautions to prevent human injury or equipment damage.
Power-on and Power-off
DANGER
Before checking the device and cables, ensure that all the power supplies of the system have
been powered off; otherwise, false or loose connection of cables may cause personal injury or
equipment damage.
l Do not swap cables and the field replaceable unit (FRU) module during the process of
power-on to avoid data loss. Wait at least one minute after you cut off the power, and then
connect to the power again.
l Do not switch off or on the power before the disks stop reading or writing data to avoid
disk damage and data loss.
Troubleshooting
DANGER
Do not touch the connectors of power cables and communication cables. Otherwise, human
bodies might get an electrical shock if there is current in the cables.
OceanStor S2600 Storage System
Routine Maintenance 1 Overview of Routine Maintenance
Issue 01 (2009-09-27) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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