Load source placement rules for secondary partitions

Each logical partition requires a load source disk unit.

The load source contains the Licensed Internal Code. The server uses the load source to start the partition. Each secondary partition has a specific slot placement for its load source depending on the type of system unit or expansion unit where it is installed. An IOP and IOA is then required to control the load source disk unit for each partition.

Attention: The information provided does not replace the LPAR Validation Tool. This information should be used as a resource with the LVT output. It's purpose is to assist you in the load source placement for your secondary partitions.

The load source disk for a secondary partition must be placed as follows:

Server or Expansion Unit	IOA	Disk Slot
5082 or 5083		15C
5064 or 9364		F31, F32, F33, F34
5052 or 5058		K01, K02, K03, K04
5077	617A in S02 and S03	11A, 11B, 13A, 13B
5065 or 5066	IOA in slot C4	D31, D32, D33, D34
	IOA in slot C9	D01, D02
	IOA in slot C14	D06, D07
5074 or 5079	The IOA controlling DB3	D31, D32, D33, D34
	The IOA controlling DB1	D01, D02
	The IOA controlling DB2^®	D06, D07
5094 or 5294	SCSI Bus Port 0 of any storage IOA to which a load source disk unit is connected.	DO1, D02, D11, D12, D21, D22, D06, D16, D17, D26, D27, D31, D32, D33, D34
5075		D01, D02, D03, D04
5095	The IOA controlling DB1	D01, D02, D03, D04
5095	The IOA controlling DB2	D07, D08, D09, D10
800/810	The IOA controlling DB2	D09, D10, D11, D12
800/810	The IOA controlling DB3	D15, D16, D17, D18
820	The IOA controlling DB2	D07, D08, D09, D10
825	The IOA controlling DB3	D06, D07, D08, D09
825	The IOA controlling DB4	D11, D12, D13, D14
830, 840, 870, or 890	The IOA controlling DB1	D01, D02
830, 840, 870, or 890	The IOA controlling DB2	D06, D07

You should be aware of these rules for secondary partition load source placement:

You specify the load source IOP when you create your partition.
Disk compression must be disabled for the load source disk.
Disk units must have at least 1GB of usable capacity.
Attention: A parity-protected 1GB file (6602 or 6605) cannot be used.
Disk mirroring requires two load source disk devices in valid load source positions.
External disk units can not be used.
Any disk IOP or IOAs that can attach to a system capable of having logical partitions can be used for additional storage capacity once the special requirements for load source disk are met.
Each partition has its own single level storage and hence its own ASP configuration. The same rules for ASP configuration apply within a partition as apply on a system without logical partitions.
Disk protection can be defined for a partition in the same way as for a non-partitioned system: parity protection (RAID), mirroring, or mixed. Bus-level mirroring requires two buses in the partition. IOP-level partitioning requires two disk IOPs in the partition.
Disk units that are already in use by a logical partition can not be added to a different logical partition. You must first remove them from the configuration of the partition that is using the disk units before adding the disk units to a different partition. In doing this, the system automatically moves any user or system data to other disk units in the same ASP.
For a 5094 or 5294, you can attach load source disk units to a maximum of 9 storage IOAs. Also, a 5094 or 5294 can have load source disk units for up to six secondary partitions.