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Dell PowerVault MD 32XX/36XX Series Storage Arrays CLI Guide

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Diagnose RAID Controller Module iSCSI Host Cable

Description

  • NOTE: This command valid only for the PowerVault MD3800i storage array.

This command runs diagnostic tests on the copper cables between the iSCSI Host interface cards and a RAID controller module. You can run diagnostics on a selected port or all ports. The ports must be able to support the cable diagnostics. If the ports do not support cable diagnostics an error is returned

Syntax

diagnose controller [(0 | 1)] 
                                 iscsiHostPort[(all | (0 | 1))] 
                                 testID=cableDiagnostics

Parameters

Parameter Description
controller Controller specifies the RAID controller module on which you want to run the cable diagnostic test. Valid RAID controller module identifier values are 0 and 1. The identifier value is 0 for the RAID controller module on the top and 1 for the RAID controller module on the bottom when viewed from the rear of the enclosure. Enclose the RAID controller module identifier in square brackets ([ ]). If a RAID controller module is not specified, the MD storage management software returns a syntax error.
iscsiHostPort Specifies the iSCSI host port on which you want to run the diagnostic tests. You can either run the diagnostics on all iSCSI host ports or run it on a specific iSCSI host. Valid values for the specific iSCSI host port identifiers are 0 or 1. Enclose the iSCSI host port identifier in square brackets ([ ]).
testID Specifies the identifier for the diagnostic test you want to run. For this diagnostic test, the value is cableDiagnostics.

Notes

When you run the cable diagnostic test, the firmware returns the following information:

  • Port: The port on which the diagnostic test was run.
  • The date and time the test was run.
  • RAID Controller Module
  • Status:
    • OK: All of the pairs of cables are good and do not have any faults.
    • Open: One or more of the four pairs of cables are open.
    • Short: One or more of the four pairs of cables are shorted.
  • Incomplete: One or more of the four pairs returned incomplete or invalid test results.
  • Cable Length: The length of the cables are listed in meters and the following information about the cables is returned:
    • When the cable status is OK, the approximate lengths of the cable pairs are returned. The lengths of the cable pairs are shown as a range (L1-L2), which are the shortest and the longest lengths of the cable pairs.
    • If the cable status is Open or Short, the approximate distance to the failure in the cable pairs. If there is one failure, the length is reported for that cable pair. If there is more than one failure, the information returned is both the shortest and longest lengths to the failures. The lengths are listed as a range (L1-L2) where L1<L2.
    • If the cable status is Incomplete, the information returned are the lengths for the shortest and longest cable pairs that the firmware can successfully test. The lengths are listed for the valid cable pairs as a range (L1-L2) where L1<L2.
  • Raw Register values for the cable diagnostic registers. The values are in a hexadecimal format:
    • Two bytes show the combined cable status (four bits per port).
    • Four two-byte numbers show the length of each channel.

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