NetApp DS212C, Manual

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2. Determine which node holds epsilon:
cluster show
The node that holds epsilon shows
true
in the
Epsilon
column. (The nodes that do not hold epsilon
show
false
.)
3. If the node in the HA pair that is undergoing maintenance shows
true
(holds epsilon), then remove
epsilon from the node:
cluster modify -node node_name -epsilon false
4. Assign epsilon to a node in another HA pair:
cluster modify -node node_name -epsilon
true
5. Return to the admin privilege level:
set -privilege admin
• If you are hot-removing a disk shelf from a stack (but keeping the stack), you recable and verify one path at
a time (path A then path B) to bypass the disk shelf you are removing so that you always maintain single-
path connectivity from the controllers to the stack.
If you do not maintain single-path connectivity from the controllers to the stack when
recabling the stack to bypass the disk shelf you are removing, you could fail the system with
a multidisk panic.
• Possible shelf damage: If you are removing a DS460C shelf and you are moving it to a different part of
the data center or transporting it to a different location, see the section, Move or transport DS460C shelves
at the end of this procedure.
Steps
1. Verify that your system configuration is
Multi-Path HA
,
Multi-Path
,
Quad-path HA
, or
Quad-path
:
sysconfig
You run this command from the nodeshell of either controller. It might take up to a minute for the system to
complete discovery.
The configuration is listed in the
System Storage Configuration
field.
For a FAS2600 series single-controller system that has the external storage cabled with
multipath connectivity, the output is displayed as
mixed-path
because the internal storage
uses single-path connectivity.
2. Verify that the disk drives in the disk shelves you are removing have no aggregates (are spares) and
ownership is removed:
a. Enter the following command from the clustershell of either controller:
storage disk show -shelf
shelf_number
b. Check the output to verify that there are no aggregates on the disk drives in the disk shelves you are
removing.
Disk drives with no aggregates have a dash in the
Container Name
column.
c. Check the output to verify that ownership is removed from the disk drives on the disk shelves you are
removing.
Disk drives with no ownership have a dash in the
Owner
column.
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