iSCSI problem with Event ID: 1, 5, and 70

Situation: The client has a Windows 2008 R2 connecting to EqualLogic SAN. The server loses two of 4 connections to SAN with the following Error event IDs

Event ID: 1

Level: Error

Description: Initiator failed to connect to the target. Target IP address and TCP Port number are given in dump data.

Event ID: 5
Level: Error

Description: Failed to setup initiator portal. Error status is given in the dump data.

Event ID: 70
Level: Error
Description: Error occurred when processing iSCSI logon request. The request was not retried. Error status is given in the dump data.

Event ID: 113
Level: Warning
Description: iSCSI discovery via SendTargets failed with error code 0xefff0003 to target portal *xxx.xxx.xxxx.xxxx 0003260 Root\ISCSIPRT\0000_0 .
Microsoft has an article:

Cause


This issue occurs for one or more of the following reasons.

Cause 1

An iSCSI target device that is listed on the Favorite Targets tab of the iSCSI Initiator is no longer accessible. This may occur if the iSCSI target device name is changed, if the IP address is changed, or if the iSCSI target device is removed from the network.

Cause 2

The iSCSI target device has reached its limit for the number of incoming connections.

Cause 3

A transient network issue temporarily prevented connectivity to the iSCSI target device.

Cause 4

The network stack is not fully prepared when the initiator was trying to connect to persistent targets. The initiator will retry to connect. When the network stack is fully prepared, connection should be successfully established.

Resolution


If you receive this error when the iSCSI target device that is listed on the Favorite Targets tab no longer exists, you can resolve this issue by removing the iSCSI target device from the list of favorite targets.

If you receive this error, and you cannot access an iSCSI target device that is still configured on the network, make sure that the client computer has network connectivity to the iSCSI target and make sure that name resolution is working correctly.

If you have successfully connected to your iSCSI target device despite this error, it indicates that the connectivity issue was temporary. Therefore, you can safely ignore this Error event.

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