NetApp DS460C Service Manual page 41

If you do not maintain single-path connectivity from the controllers to the stack
Attention:
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
:
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
For FAS2600 series systems with external storage, the output is displayed as
Note:
for an HA pair, or
Path HA
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
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
If you have failed disk drives in the shelf you are removing, they have
Note:
Container Type
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
Ownership has been removed on two disk drives; therefore,
column. And two disk drives are failed; therefore,
Container Type
column:
Container Type
cluster::> storage disk show -shelf 3
Usable
Disk Size Shelf Bay Type
-------- -------- ----- --- ------ ----------- ---------- ---------
...
1.3.4
1.3.5
1.3.6
1.3.7
...
Hot-removing disk shelves with IOM12 modules | 41
Multi-Path HA
System Storage Configuration
for a single-controller configuration because the
Mixed-Path
unassigned
column. (Failed disk drive do not have ownership.)
Container Name
Disk
- 3 4 SAS
- 3 5 SAS
- 3 6 SAS
- 3 7 SAS
, ,
Multi-Path Quad-path HA
field.
column.
Container Name
in the
Container Type
column for each disk drive.
unassigned
broken
Container Container
Type Name
unassigned
unassigned
broken
broken
, or
Mixed-
column.
in the
broken
appears in the
appears in the
Owner
- -
- -
- -
- -