IBM Storwize V7000, Troubleshooting And Maintenance Manual

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Procedure: Identifying which enclosure or canister to service
Use this procedure to identify which enclosure or canister must be serviced.
About this task
Procedure
Use the following options to identify an enclosure. An enclosure is identified by its
ID and serial number.
v The ID is shown on the LCD panel on the front left of the enclosure. The serial
number is also found on the front left end cap of the enclosure and is repeated
on the rear left flange of the enclosure. The enclosure ID is unique within a
Storwize V7000 system. However, if you have more than one Storwize V7000
system, the same ID can be used within more than one system. The serial
number is always unique.
Note: Use the Manage Device options from the management GUI to change the
ID of an enclosure. Use this option to set a unique ID on all your enclosures.
v Within an enclosure, a canister is identified by its slot location. Slot 1 is the
upper canister. Slot 2 is the lower canister. A canister is uniquely identified by
the enclosure that it is in and the slot location. The ID can be shown as
E-C or
E|C where E is the enclosure ID and C is the canister location. On the service
assistant, the ID is known as the Panel .
Note:
When a node canister is added to a clustered system as a node, it is given
a node name and a node ID. The default node name is
node N
, where N is an
integer number. This number does not represent the slot location of the node.
Similarly, the node ID does not indicate the slot location. The
Manage Device >
Canister panel from the management GUI shows both the node name and the
canister location. The service assistant home page also shows both the node
name and the canister location. If you have only the node name, use these
panels to determine the node canister location.
v Use the service assistant to identify a node canister by turning on the identify
LED of the containing enclosure. This option is at the upper left of the service
assistant page. It is a good practice to identify a node in this way before
performing any service action. Performing a service action on the wrong canister
can lead to loss of access to data or loss of data.
Procedure: Checking the status of your system
Use this procedure to verify the status of objects in your system using the
management GUI. If the status of the object is not online, view the alerts and run
the recommended fix procedures.
About this task
Volumes normally show offline because another object is offline. A volume is
offline if one of the MDisks that makes up the storage pool that it is in is offline.
You do not see an alert that relates to the volume; instead, the alert relates to the
MDisk. Performing the fix procedures for the MDisk enables the volume to go
online.
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Storwize V7000: Troubleshooting, Recovery, and Maintenance Guide