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• 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.

Steps

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:

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.

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.)

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. The aggregates are removed on all of the disk drives; therefore, a dash

appears in the

Container Name column for each disk drive. Ownership is also removed on all of the disk

drives; therefore, a dash appears in the

Owner column for each disk drive.

1648

NetApp ASA C Series System Documentation

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