Chapter 3 Component Status
3.2 Controller Enclosure
Port Error Statistics (for the ETERNUS AF250 and the ETERNUS DX200F)
The total number of errors for ports is displayed.
An increasing number of errors in the information is used to notify early replacement for warning status
components. This can also be used as analysis information when performance is reduced.
This function is available for the ETERNUS AF250 and the ETERNUS DX200F. For the other models, refer to
"3.4.2 Port Error Statistics" (page
Errors that occur in the SAS transmission line are detected in CM and recovered by retries. Note that
detecting an error is not an immediate cause of data failure.
The following items are displayed in the Main area:
Controller Enclosure that has ports is displayed.
The chip installation location that is targeted by the port error detection is displayed.
The port number that is targeted by the port error detection is displayed.
The Phy number of the port that is targeted by the port error detection is displayed.
The Phy status is displayed.
The number of Invalid Dword occurrences is displayed.
"Invalid Dword" indicates an error in the SAS transmission line. The SAS interface encodes 8-bit to 10-bit to
improve the transmission error ratio. This error is detected when the SAS interface fails encoding.
ETERNUS Web GUI User's Guide (Operation)
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