Planning And Considerations; San And Network Setup - IBM TotalStorage DS300 Best Practices Manual

9.2.7, "Driver and service pack installation and finishing the setup" on
page 533
9.2.8, "Enable initiator access to all TotalStorage DS400 ports" on page 541
9.2.9, "Finish the IBM TotalStorage DS4000 FC2-133 Host Bus Adapter BIOS
setup" on page 548

9.2.1 Planning and considerations

The DS4000 FC2-133 host bus adapter does not search for an accessible LUN
to boot from on an attached target like the IBM SMB Host Bus Adapter does. This
requires you to specify the boot LUN in the BIOS menu of the host bus adapter.
Up to four boot LUNs may be specified. Due to the fact that the host bus adapter
does not has any failover capabilities, there are situations where the boot of the
server will fail. There is no 100% redundancy during the boot time! Such a
situation can only be solved with manual intervention.
When a problem occurs which will prevent the server to boot from the
troubleshooting is much more complicated than using local boot. There is no
operating system to check what went wrong.
The setup consists of redundant paths to the storage. This results in seeing the
same disk multiple times. This is a kind of shared storage and this cannot be
handled by Microsoft Windows An setup change for the period of operating
system installation is required. The steps are described in this example when thy
are needed.
All management interfaces of the various components are connected into its now
management network this good practice and allows access restrictions to
persons who need access and who not. When using IBM blade server to connect
to a TotalStorage DS400 the separate management network is a requirement to
prevent network problems.

9.2.2 SAN and network setup

The following diagram shows the cabling of the components. It follows the
example configuration as explained in "Fabric attachment with quad paths
without interswitch link" on page 444.
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IBM TotalStorage DS300 and DS400 Best Practices Guide