Failing To Discover The Connected Disk Enclosure - Huawei OceanStor S2600 Manual

OceanStor S2600 Storage System
Troubleshooting
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Procedure
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5.20 Failing to Discover the Connected Disk Enclosure

This section describes how to handle the fault that the connected disk enclosure fails to be
discovered.
Symptom
The disk enclosure is connected to the controller enclosure through the expander cable, but it
cannot be viewed in the ISM.
Possible Causes
One of the following causes may arouse the failure of discovering the connected disk enclosure:
Issue 03 (2010-01-28)
2. If the RAID group that owns the source LUN or the target LUN is in the Fault status,
you can determine that the RAID group that owns the source LUN or the target LUN
is invalid.
Cause 4: The HyperImage is automatically terminated.
1. When the HyperCopy is faulty, check whether the system prompts Snapshot halt due
to abnormity.
2. If the system prompts Snapshot halt due to abnormity, you can determine that the
HyperImage used by the incremental HyperCopy is automatically terminated;
therefore, the HyperCopy is faulty.
Cause1: The disk enclosure where the source LUN or the target LUN is located is powered
off abnormally.
1. Check whether the power cable of the disk enclosure is properly connected. Connect
the power cable again if the power cable of the disk enclosure is improperly connected.
2. Check whether the external power supply is normal. Contact the maintaining
personnel for help if the external power supply is abnormal.
3. After the power supply is recovered and the disk enclosure is powered on, the
HyperCopy is in the Normal status.
Cause 2: The link between devices is disconnected.
1. Remove and insert the data transmission cable again or replace the data transmission
cable.
2. The link indicator on the corresponding expander port or the host port is on and the
HyperCopy is in the Normal status.
Cause 3: The RAID group that owns the source LUN or the target LUN is invalid.
1. Contact technical support engineers. For how to contact technical support engineers,
see 3.4 Obtaining Technical
Cause 4: The HyperImage is automatically terminated.
1. For how to handle the HyperImage fault, see
HyperImages.
2. Delete the faulty HyperCopy and create a new HyperCopy. For details, see the
OceanStor S2600 Storage System Online Help.
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Copyright © Huawei Technologies Co., Ltd.
5 Troubleshooting of Common Faults
Support.
5.18 Automatic Termination of
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