NetApp AFF A200 System Documentation page 1657

• If needed, you can turn on the disk shelf's location (blue) LEDs to aid in physically locating the affected disk
shelf:
storage shelf location-led modify -shelf-name shelf_name -led-status on
A disk shelf has three location LEDs: one on the operator display panel and one on each IOM12 module.
Location LEDs remain illuminated for 30 minutes. You can turn them off by entering the same command,
but using the off option.
• If needed, you can refer to the Monitoring disk shelf LEDs section for information about the meaning and
location of disk shelf LEDs on the operator display panel and FRU components.
Steps
1. Properly ground yourself.
2. Unpack the new IOM12 module, and set it on a level surface near the disk shelf.
Save all packaging materials for use when returning the failed IOM12 module.
3. Physically identify the failed IOM12 module from the system console warning message and the illuminated
attention (amber) LED on the failed IOM12 module.
4. Perform one of the following actions based on the type of configuration you have:
If you have a...
Multipath HA, multipath, quad-path HA, or quad-
path configuration
FAS2600 series and FAS2700 single-path HA
configuration
FAS2600 series single-path configuration
5. Disconnect the cabling from the IOM12 module that you are removing.
Make note of the IOM12 module ports each cable is connected to.
6. Press the orange latch on the IOM12 module cam handle until it releases, and then open the cam handle
fully to release the IOM12 module from the mid plane.
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Then...
Go to the next step.
a. Determine the target node (the node the failed
IOM12 module belongs to).
IOM A belongs to Controller 1. IOM B belongs
to Controller 2.
b. Take over the target node:
failover takeover -bynode partner
HA node
a. Shut down the system from the system console:
halt
b. Verify that your system halted by checking the
storage system console.
storage