cables (for all shelf-to-shelf and controller-to-stack connections).
SAS optical cables are not supported in a mixed stack.
If the IOM6 shelf stack is cabled with any SAS optical cables, you cannot hot-add an IOM12
shelf. Contact your NetApp sales representative.
• Your configuration must have less than the maximum number of drives supported for a bridge port.
• You must have ordered and received the IOM12 shelves and appropriate number and types of SAS copper
cables.
IOM12 shelves use mini-SAS HD connectors. IOM6 shelves use QSFP connectors.
• The bridge must be running firmware version 3.16/4.16 and later.
Considerations for a hot-add
You should familiarize yourself with aspects and best practices about this procedure
before hot-adding IOM12 shelves to a stack of IOM6 shelves.
General considerations
• It is highly recommended that the IOM12 shelves you are hot-adding are running firmware version 0260 or
later, before you cable them to your system.
Having a supported version of shelf firmware protects against storage stack access issues if you cabled the
hot-added shelf to the stack incorrectly.
After you download the IOM12 shelf firmware to your shelves, verify the firmware version is 0260 or later
by entering the
storage shelf show -module command at the console of either controller.
• Nondisruptive stack consolidation is not supported.
You cannot use this procedure to hot-add disk shelves that were hot-removed from another stack in the
same system when the system is powered on and serving data (I/O is in progress).
• You can use this procedure to hot-add disk shelves that were hot-removed within the same MetroCluster
system if the affected shelf has mirrored aggregates.
• After you have cabled a hot-added shelf, ONTAP recognizes the shelf:
â—¦ Drive ownership is assigned if automatic drive assignment is enabled.
â—¦ Shelf (IOM) firmware and drive firmware should be updated automatically, if needed.
Firmware updates can take up to 30 minutes.
Best practice considerations
• Best practice: The best practice is to have current versions of shelf (IOM) firmware and drive firmware on
your system before hot-adding a shelf.
NetApp Downloads: Disk Shelf Firmware
NetApp Downloads: Disk Drive Firmware
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