i5/OS logical partition functional differences between IBM Systems and eServer hardware and previous hardware models

• iSeries Navigator
• Dedicated service tools (DST) or system service tools (SST)
• LPAR API

• Hardware Management Console (HMC)
• LPAR DST/SST function not available.
• HMC remote command line

Service Tools User IDs created using DST or SST:

• System partitions administration authority
• System partitions operations authority

HMC user IDs created with the following standard user roles:

• Super administrator
• Operator
• Viewer
• Product engineer
• Service representative

You can also create custom user roles based upon the standard user roles.

Service Tools User IDs created using DST or SST:

• System partitions administration authority
• System partitions operations authority

The maximum number of logical partitions supported depends on the number of processors in the server model.

iSeries 270, 8xx, and 890 models: Up to 10 times the number of processors in the server, with a maximum of 32 logical partitions.

Up to 10 times the number of processors in the server, with a maximum of 254 total logical partitions. The maximum number of i5/OS logical partitions supported depends on the server model.

IBM System i5 and eServer i5: Up to 64 i5/OS logical partitions per server.

IBM System p5 and eServer p5 models that support i5/OS: Up to 10 i5/OS logical partitions on 9117-570 servers and up to 20 i5/OS logical partitions on 9119-590, and 9119-595 servers.

One i5/OS logical partition and up to four Linux^® logical partitions.

• Primary partition
• Secondary partitions
• Shell partition

• No primary partition
• Partition profiles
• System profiles
• Service partition

One i5/OS logical partition and up to four Linux logical partitions

New logical partition available after an IPL of the entire system.

New logical partition and partition profile immediately available.

Initial logical partition setup requires a server IPL. The creation of additional logical partitions might also require a server IPL.

Linux

• AIX^®
• Linux
  • SUSE Linux Enterprise Server 9
  • Red Hat^® Enterprise Linux version 4

• SUSE Linux Enterprise Server 9
• Red Hat Enterprise Linux version 4

Linux

• AIX
• Linux

Linux

Can be changed after an IPL of the system.

Can be changed after a shutdown and reactivation of the logical partition using a changed partition profile.

Can be changed after a shutdown and reactivation of the logical partition. Minimum and maximum values are used only for workload management applications and for managed system restart after a processor or memory failure.

• Dynamic: can be changed without restarting the logical partition.
• Can be shared among multiple logical partitions.

• Dynamic: can be changed without restarting the logical partition.
• Can be shared among multiple logical partitions.
• Shared mode of capped and uncapped.
• Powered-off logical partitions using dedicated processors will have their processors available to shared processor pool.
• Limited number of processors or processing units available for i5/OS logical partitions on IBM System p5 and eServer p5 servers.

• Static: must restart the logical partition before changes are applied.
• Can be shared among multiple logical partitions.
• Shared mode of capped and uncapped.
• Powered-off logical partitions using dedicated processors will have their processors available to shared processor pool.

• Dynamic: can be changed without restarting the logical partition.
• Memory assigned in increments of 1 MB.

• Dynamic: can be changed without restarting the logical partition.
• Memory can be assigned in increments of 16 MB, 32 MB, 64 MB, 128 MB, and 256 MB.

• Static: must restart the logical partition before changes are applied.
• Memory can be assigned in increments of 16 MB, 32 MB, 64 MB, 128 MB, and 256 MB.

• I/O resources allocated at bus-level or IOP-level.
• IOPs can be switched among logical partitions dynamically.
• Bus ownership or bus usage (shared or dedicated) changes occur dynamically.

• I/O resources allocated at slot level.
• IOPs, IOAs, and empty slots can be switched among logical partitions dynamically.
• Bus ownership cannot be configured.

Virtual I/O resources are devices owned by the hosting partition that provides I/O function to the guest partition.

Virtual console, virtual disk unit, virtual CD, virtual tape, and virtual Ethernet are supported virtual I/O resources.

A hosting partition (OS/400 partition) shares resources with a guest partition.

A hosted partition (guest partition) receives resources from OS/400.

Virtual I/O adapters can be defined in a partition profile so that they are added to the logical partition when you activate the logical partition using the partition profile. Virtual I/O adapters can also be added and removed dynamically. (However, virtual I/O adapters cannot be moved dynamically between logical partitions.)

You can change the properties of a virtual I/O adapter without requiring a restart of the logical partition.

i5/OS logical partitions support up to 32 767 virtual I/O adapters.

IBM System i5 and eServer i5 models:

• Virtual SCSI adapters, virtual serial adapters, and virtual Ethernet adapters are supported for i5/OS logical partitions.
• An i5/OS logical partition can be a virtual server partition. (A virtual server partition is a logical partition that provides a virtual resource to other logical partitions on the system. The logical partitions that use these virtual resources are known as virtual client partitions.)

IBM System p5 and eServer p5 models:

• Virtual Ethernet adapters are supported for i5/OS logical partitions.
• Virtual SCSI adapters and virtual serial adapters are not supported for i5/OS logical partitions.
• An i5/OS logical partition cannot be a virtual server partition or a virtual client partition.

Eight virtual I/O slots exist initially, and five of these slots are free. If you create more than five virtual I/O devices on the managed system, you must IPL the managed system to enable all available virtual I/O slots. Otherwise, virtual adapters are created dynamically (without requiring an IPL).

Virtual SCSI adapters, virtual serial adapters, and virtual Ethernet adapters are supported for i5/OS logical partitions.

An i5/OS logical partition can be a virtual server partition. (A virtual server partition is a logical partition that provides a virtual resource to other logical partitions on the system. The logical partitions that use these virtual resources are known as virtual client partitions.)

• iSeries Operations Console (LAN and Directly attached)
• Twinaxial console

• HMC 5250
• iSeries Operations Console (LAN and Directly attached)
• Twinaxial console

• iSeries Operations Console (LAN and Directly attached)
• Twinaxial console

• Dynamic: can be changed without restarting the logical partition.
• Up to 16 networks

• Dynamic: can be changed without restarting the logical partition.
• Up to 4094 networks

• Dynamic: can be changed without restarting the logical partition.
• Up to four networks

• Dynamic: can be changed without restarting the logical partition.
• Single network.

• Dynamic: can be changed without restarting the logical partition.
• Single network.

• Dynamic: can be changed without restarting the logical partition.
• Can be shared among multiple logical partitions.
• Single network.

• Dynamic: can be changed without restarting the logical partition.
• Can be shared among multiple logical partitions.
• Single network.

• Dynamic: can be changed without restarting the logical partition.
• Can be shared among multiple logical partitions.
• Single network.

• System level dump
• Partition dumps

• Service processor dumps
• Platform system dumps
• Partition dumps

• Service processor dumps
• Platform system dumps
• Partition dumps

• HMC
• Service partition