| Installing an additional caching module in a
system with preexisting caching modules |
You have completed the installation process
and are done with this procedure. |
| Replacing a failed caching module |
Return the failed part to IBM, following the
RMA instructions shipped with the kit. Contact IBM Service and Support:
1-800-IBM-SERV (1-800-426-7378) if you need the RMA number or additional
help with the replacement procedure. |
| Installing a caching module for the first time
or upgrading the 16-GB PAMs to Flash Cache modules |
You must have a valid WAFL external cache software
license key to complete the WAFL external cache installation. IBM
provides your license key on the printed IBM System Storage N series
Function Authorization form that you received from IBM with your software
offering order. If you do not have the Function Authorization form,
contact the IBM Manufacturing Quality Hotline. Enable the WAFL
external cache software and set the software configuration options
by completing the following substeps: - Enable the WAFL external cache software license by entering the
following command:license add license key
- For 7-Mode, run this command from the system console prompt.
- For a 7-Mode HA pair , run this command from each node.
WAFL external cache functionality is enabled automatically.
- Verify that WAFL external cache functionality is enabled by entering
the following command: options flexscale.enable
- For 7-Mode, run this command from the system console prompt.
- For a 7-Mode HA pair , run this command from each node.
The output should show that the functionality is on.
- Read about the WAFL external cache configurations in the Data
ONTAP 8.0 7-Mode System Administration Guide (available at: www.ibm.com/storage/support/nseries/).
Knowing your application and volume configuration helps you decide
what configuration options to choose.
Note: You can set the WAFL
external cache configuration options now or later, but it is recommended
that you set the options now to ensure optimal performance for the
system's workload.
- Follow the applicable option-enabling procedures in the Data
ONTAP 8.0 7-Mode System Administration Guide.
Note: The option-enabling
procedures in the Data ONTAP 8.0 7-Mode System Administration Guide
apply to 7-Mode.
Note: For a 7-Mode HA pair , you
must configure options on each node. For Clustered Data ONTAP, you
must configure the option from the nodeshell of the target node.
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