I am building an Oracle 10g server with ASM on an HP Blade running OEL4.7. My data center established 3 LUNs on an IBM DS4000 SAN. The server discovered them an SCSI devices and assigned 8 SDx's per LUN. So now I have /dev/sda through /dev/sdx.

I believe that I have no issues with the HBA since the system has discovered the LUNs. From some reading I see that I need to load RDAC driver to deal with the multi-homed LUNs. But I have no idea where the RDAC driver comes from. IBM support web site and google have yielded no useful results.

Can someone enlighten me on how/where to obtain an RDAC driver for the DS4000 and how to install it?

Hi,

RDAC (redundant disk array controller) will be provided from storage/HBA vendor. So if your hardware is IBM, take a look at the IBM website.

Hi,

some more, take a look here:

http://www-947.ibm.com/systems/suppo...trix=Y&psid=dm

There you can select your storage and HBA for the correct download.

Hope this helps.

Many thanks for the guide. I'll dig deeper at IBM support.