DB2 and AIX on p570 server with Virtual I/O Server

Hi, All
We are implementing a system landscape on IBM p5 570 servers and currently are planning of 3 LPARs with dual VIO-servers on each box.
Have anybody expirience for this configuration in production systems ?
Is there any DB2-specific problems for working with virtual SCSI volumes over VIO-server ?
Is there any IBM/SAP whitepapers/technote for this ?
Big thanks and sorry for my bad english

We recently rolled-out 2 p550's configured with dual VIO servers each for redundancy. So far we have installed SAPs Solution Manager and Portals on top of DB2. At this point we are using internal SCSI disk but intend to use SAN disk in future.
Performance has been good, although these are not yet Production systems. DB2 doesn't care about the virtual disk, since they appear as normal SCSI disks to the OS. I've seen it recommended NOT to use Virtualized disk in production, but I think this may be a CYA-type recommendation.
There are a couple of White Papers from the "IBM SAP International Competence Centre" in Waldorf, that discuss SAP on AIX 5.3 and Power5. Sorry I don't have the links anymore.

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