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3. In the Overview pane, click in the row of the NAS appliance whose controller you want to
detach.
4. Click Detach.
The Detach NAS Controller dialog box appears.
5. In the NAS controller dropdown, select the controller you want to detach.
6. Click OK.
The progress of the detach process is displayed in the Detach dialog box. If you close the dialog box,
the process will continue to run in the background. The NAS controller is detached when the NAS
controller State changes to Detached.
Attaching a NAS Controller
Attach a new NAS controller when replacing an existing NAS controller. Once attached, the new NAS
controller inherits the FluidFS cluster configuration settings of the existing NAS controller.
NOTE: Verify that the NAS controller being attached is in standby mode and powered on. A NAS
controller is on and in standby mode if the power LED is flashing green at around two flashes per
second.
1. Click the Hardware tab on the left.
2. Click the NAS Appliances tab on the top.
3. In the Overview pane, click in the row of the NAS appliance to which you want to attach a
controller.
4. Click Attach.
The Attach NAS Controller dialog box appears.
5. In the NAS controller dropdown, select the controller you want to attach.
6. Click OK.
The progress of the attach process is displayed in the Attachdialog box. If you close the dialog box,
the process will continue to run in the background. The NAS controller is attached when the NAS
controller Statechanges to Formatted.
7. (Fibre Channel only) After the attach operation completes, record the new WWNs and manually
update fabric zoning on the Fibre Channel switch.
Replacing a NAS Controller
In the event of a failure where a NAS controller cannot be brought back online (for example, a
malfunctioning NAS controller), you must remove the existing NAS controller from the FluidFS cluster and
replace it with a different NAS controller.
While a NAS controller is detached from the FluidFS cluster, CIFS shares and NFS exports remain available
(although performance might decrease because data is no longer cached); however, most FluidFS cluster
configuration changes are not allowed. Therefore, it is important to replace a failed NAS controller as
soon as possible.
NOTE: Only replace a NAS controller under the direction of Dell Technical Support Services.
NOTE: Before replacing the NAS controller ensure that the existing NAS controller is verified as
failed by Dell Technical Support Services.
1. Detach the existing NAS controller.
2. Ensure that all cables are labeled.
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