The chassis SAS-2 fabric is made of interconnected SAS-2 components (REMs, NEMs and storage modules). If a SAS-1 component is in place of a required SAS-2 component, the fabric itself will be incomplete and will display an error when you attempt to assign storage module resources from the CMM ILOM.
What to look for:
The following table provides examples of how the web interface and CLI might look like when the SAS-2 fabric is missing required components.
Things to check:
An example of a complete chassis SAS-2 fabric looks like the following (note that SAS-1 components are automatically excluded):
A supported SAS-2 chassis fabric must have the following chassis components:
At least one SAS-2 NEM. For path redundancy you need two SAS-2 NEMs. Refer to Storage Module Hardware Compatibility in Sun Blade Storage Module M2 Installation Guide.
Note - You can only have SAS-2 NEMs, you cannot mix SAS-2 and SAS-1 NEMs in the chassis.
A server module with a SAS-2 REM. Refer to Storage Module Hardware Compatibility in Sun Blade Storage Module M2 Installation Guide.
Note - You can have server modules with SAS-1 REMs, but they will only be able to access their own internal disks. They will not be able to access storage modules or NEM external SAS ports.
Optionally, one or more Sun Blade Storage Module M2s (which is a SAS-2 device).
To properly establish a chassis SAS-2 fabric, you must not have SAS-1 NEMs installed in the chassis. SAS-1 NEMs include:
Sun Blade 6000 Multi-Fabric Network Express Module (X4212A)
Sun Blade 6000 10GbE Multi-Fabric Network Express Module (X4236A)
Sun Blade 6000 Virtualized Multi-Fabric 10GbE Network Express Module (X4238)
The chassis CMM excludes SAS-1 server modules and disk modules from accessing the chassis SAS-2 fabric. SAS-1 server modules and disk modules include:
Sun Blade 6000 Disk Module (B18-AA)
Server modules with SAS-1 integrated disk controllers or REMs (though the server will still be able to access its internal disks).
Actions to perform:
Ensure that you have the proper SAS-2 components to establish a complete (server REM to disk) SAS-2 fabric.
Check that the chassis is powered on. If it is not, power it on, wait five minutes, and try again.
If the components are present and powered-on and the condition persists, call your Oracle service representative.