Missing SAS–2 Components Error

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.

CMM ILOM If SAS-2 Components are Missing from the Fabric Web interface In CMM->Storage->Zoning. CLI -> ls /STORAGE/sas_zoning Targets: <---No targets are listed. Commands: cd set show

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.

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  Note - You can only have SAS-2 NEMs, you cannot mix SAS-2 and SAS-1 NEMs in the chassis.

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• A server module with a SAS-2 REM. Refer to Storage Module Hardware Compatibility in Sun Blade Storage Module M2 Installation Guide.

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  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.

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• 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.