Attention: 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.
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.
Note: For FAS2600 series systems with external storage, the output is displayed as Mixed-
Path HA for an HA pair, or Mixed-Path for a single-controller configuration because the
internal storage is cabled differently than the external storage. For an HA pair, the internal
storage is cabled as single-path HA and the external storage is cabled as multipath HA. For a
single-controller configuration, the internal storage is cabled as single-path and the external
storage is cabled as multipath.
2. Verify that the disk drives in the disk shelves you are removing have no aggregates (are spares)
and ownership is removed, by completing the following substeps:
a. Enter the following command from the clustershell of either controller:
storage disk show -shelf shelf_number
b. Check the output to verify 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 unassigned in the Container Type column.
Note: If you have failed disk drives in the shelf you are removing, they have broken in the
Container Type column. (Failed disk drive do not have ownership.)
Example
The following output shows disk drives on the disk shelf being removed (disk shelf 3) are in a
correct state for removing the disk shelf. Aggregates have been removed on all of the disk drives
in disk shelf 3; therefore, a dash appears in the Container Name column for each disk drive.
Ownership has been removed on two disk drives; therefore, unassigned appears in the
Container Type column. And two disk drives are failed; therefore, broken appears in the
Container Type column:
cluster::> storage disk show -shelf 3
Usable Disk Container Container
Disk Size Shelf Bay Type Type Name Owner
-------- -------- ----- --- ------ ----------- ---------- ---------
...
1.3.4 - 3 4 SAS unassigned - -
1.3.5 - 3 5 SAS unassigned - -
1.3.6 - 3 6 SAS broken - -
1.3.7 - 3 7 SAS broken - -
...
Hot-removing disk shelves with IOM12 modules |
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