This page shows a list of the Host Channel Adapters (HCAs) whose resources are being used by the logical partition.
This page is shown only if the logical partition uses HCA resources. HCAs are not supported for IBMi logical partitions.
Note: Shared memory partitions cannot have HCAs, so if you specified that this partition uses shared memory, you will not be able to assign HCAs to this partition.
The following columns are shown for each HCA:
- Physical location
- The physical location of the HCA on the managed system.
- GUID Index
- A number from 1 through 62 that determines which Globally Unique Identifier (GUID) on the HCA is assigned to the partition profile.
If the GUID index is -1, this means the GUID is no longer valid. A possible reason is that the HCA has been replaced with a new HCA with a new set of GUIDs. If so, you must reconfigure the GUID index in the partition profile, and shut down and reactivate the logical partition using the changed partition profile.- GUID
- The actual GUID that is assigned to the logical partition. A GUID is an eight-byte sequence of hexidecimal numbers that identifies a node. The first seven bytes of the GUID identify the HCA. All GUIDs on an HCA start with the same first seven bytes. The last byte of each GUID is formed by subtracting 1 from the GUID index and converting the result to hexidecimal.
- Capability
- The amount of resource that is allocated to the GUID from the HCA. Possible values in the Capability column are:
- Low
1/16 (6.25%) of the resources of the adapter are allocated to the GUID. Because the resources are not evenly divided, the maximum number of partitions that can be activated with Low is 15.- Medium
1/8 (12.5%) of the resources of the adapter are allocated to the GUID.- High
1/4 (25%) of the resources of the adapter are allocated to the GUID.- Dedicated
All (100%) of the resources of the adapter are allocated to the GUID.- HMC Managed
- Indicates whether the Hardware Management Console (HMC) is able to manage the assignment of the GUIDs. If the value is No, the HCA is in an error state that prevents the HMC from configuring the GUID allocation.