Hot-swapping or replacing an IOM12 module
Your system configuration determines whether you can perform a nondisruptive IOM12 module hot-
swap or a disruptive IOM12 module replacement when an IOM12 module fails. When an IOM12
module fails, the system logs a warning message to the system console indicating which IOM12
module has failed. In addition, the attention (amber) LED on the operator display panel and the
attention (amber) LED on the failed IOM12 module illuminate.
Before you begin
All other components in the system—including the other IOM12 module—must be functioning
properly.
About this task
• For multipathed (multipath HA or multipath) and quad-pathed (quad-path HA or quad-path)
configurations, you can hot-swap an IOM12 module (nondisruptively replace an IOM12 module
in a system that is powered on and serving data—I/O is in progress).
• For FAS2600 series single-path HA configurations, you must perform a takeover and giveback
operation to replace an IOM12 module in a system that is powered on and serving data—I/O is in
progress.
• For FAS2600 series single-path configurations, you must halt your system to replace an IOM12
module.
Attention: If you attempt to hot-swap an IOM12 module on a disk shelf with a single-path
connection, you will lose all access to the disk drives on the disk shelf as well as any disk
shelves beneath. You could also bring down your entire system.
• Best practice is to have the current versions of disk shelf (IOM) firmware and disk drive firmware
on your system before adding new disk shelves, shelf FRU components, or SAS cables.
Current versions of firmware can be found on the NetApp Support Site.
NetApp Downloads: Disk Shelf Firmware
NetApp Downloads: Disk Drive and Firmware
• Disk shelf (IOM) firmware is automatically updated (nondisruptively) on a new IOM12 module
with a non current firmware version.
IOM firmware checks occur every ten minutes. An IOM firmware update can take up to 30
minutes.
• 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 -node node_name -shelf-name shelf_name
-led-status on
A disk shelf has three location (blue) 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.
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