Test asynchronous mirror group connectivity

10/07/2024 Contributors

The diagnose asyncMirrorGroup command tests possible communication problems between the local storage array and the remote storage array associated with an asynchronous mirror group.

Supported Arrays

This command applies to any individual storage array, with some restrictions. If you are running the command on the E2700 or E5600 array, there are no restrictions.

This command is not supported on E4000, E2800, E5700, EF600, and EF300 platforms.

Roles

N/A

Syntax

diagnose asyncMirrorGroup [asyncMirrorGroupName]
testID=(all | connectivity | latency | bandwidth | portConnections)

Parameter

Parameter Description

Parameter	Description
`asyncMirrorGroup`	The name of an existing asynchronous mirror group that you want to test. Enclose the asynchronous mirror group name in square brackets ([ ]). If the asynchronous mirror group name has special characters or numbers, you must enclose the asynchronous mirror group name in double quotation marks (" ") inside square brackets.
`testID`	The identifier for the diagnostic test you want to run. The identifier and corresponding tests are as follows: All — Performs all the tests associated with this command. Connectivity — Verifies that the two controllers have a communication path. The connectivity test sends an inter-controller message between the storage arrays, and then validates that the corresponding asynchronous mirror group on the remote storage array exists. It also validates that the volume members of the asynchronous mirror group on the remote system match the volume members of the asynchronous mirror group on the local system. Latency — Sends a SCSI test unit command to each volume on the remote storage array associated with the asynchronous mirror group to test the minimum, average, and maximum latency. Bandwidth — Sends two inter-controller messages to the remote storage array to test the minimum, average, and maximum bandwidth as well as the negotiated link speed of the port on the controller performing the test. Port connections — Shows the port that is being used for mirroring on the local storage array and the port that is receiving the mirrored data on the remote storage array.

asyncMirrorGroup

The name of an existing asynchronous mirror group that you want to test. Enclose the asynchronous mirror group name in square brackets ([ ]). If the asynchronous mirror group name has special characters or numbers, you must enclose the asynchronous mirror group name in double quotation marks (" ") inside square brackets.

testID

The identifier for the diagnostic test you want to run. The identifier and corresponding tests are as follows:

All — Performs all the tests associated with this command.
Connectivity — Verifies that the two controllers have a communication path. The connectivity test sends an inter-controller message between the storage arrays, and then validates that the corresponding asynchronous mirror group on the remote storage array exists. It also validates that the volume members of the asynchronous mirror group on the remote system match the volume members of the asynchronous mirror group on the local system.
Latency — Sends a SCSI test unit command to each volume on the remote storage array associated with the asynchronous mirror group to test the minimum, average, and maximum latency.
Bandwidth — Sends two inter-controller messages to the remote storage array to test the minimum, average, and maximum bandwidth as well as the negotiated link speed of the port on the controller performing the test.
Port connections — Shows the port that is being used for mirroring on the local storage array and the port that is receiving the mirrored data on the remote storage array.

Minimum firmware level

7.84

11.80 adds EF600 and EF300 array support