zHyperLink ports

zHyperLink ports

The following information is shown for each zHyperLink port:

Acknowledged

Shows whether a user marked the status of an zHyperLink as acknowledged. An acknowledged status indicates that the status was reviewed and is either resolved or can be ignored. An acknowledged status is treated as normal and is used when the status of related, higher-level resources is determined.

For example, if a port has an error status, the related storage system also shows an error condition. If the error status of the port is acknowledged, it changes to Error-Acknowledged. This acknowledged status is then treated as normal, and is used in evaluating the overall condition of the storage system. In this case, if the other internal resources of the storage system are also normal, the storage system condition is considered normal.

Last data collection

The timestamp when metadata was last collected for this zHyperLink port.

Link ID

A unique identifier for the zHyperLink port link. This ID distinguishes this link from other links within the system’s hardware and is used in performance and status reporting.

Location

For DS8000, a code that represents the physical location of a port within the hardware of a storage system. The location information is shown in the following format:

frame - I/O enclosure - host adapter - port

For example, the location value R1-I4-C5-T3 corresponds to frame 1, I/O enclosure 4, host adapter 5, and port 3.

The value for I/O enclosure is the number of the enclosure in the frame.

Name

Name of the zHyperLink port.

Optical power per lane

The measured optical signal power for each lane of the zHyperLink connection. Higher or lower values may indicate signal integrity issues or link quality variations.

Remote link ID

The identifier for the remote side of the zHyperLink connection. This corresponds to the link ID at the connected end of the zHyperLink path.

Remote WWN

The World Wide Node name of the remote endpoint connected through the zHyperLink port.

Speed (Gbps)

The negotiated data transfer rate of the link in gigabits per second. This reflects the effective throughput capability of the zHyperLink port. Speed is displayed in the format GENx/y, where GENx represents the PCIe generation and y represents the link width (the number of operational PCIe lanes on the zHyperLink port). For example, GEN4/8 indicates PCIe Generation 4 with eight active lanes.

Status

The status of a zHyperLink port. Statuses include Operational, Unconfigured and Inactive, Error, and Offline.

Note: You cannot view fenced or certain system‑level offline status of zHyperLink ports in IBM Storage Insights because the DS8000 does not report those status to IBM Storage Insights.

Type

The category of port type for this zHyperLink connection. This typically identifies the port family or adapter class in use.

WWNN

The World Wide Node Name (WWNN) of the zHyperLink port.

You can also view the properties and performance of each zHyperLink port by clicking the overflow menu at the end of each port row.

Performance

Use the Performance tab to view performance metrics for the zHyperLink port. This includes error counts and other time-series metrics captured at the port and volume level. For more information, see performance metrics for z HyperLink ports.