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
Description: Initiator failed to connect to the target. Target IP address and TCP Port number are given in dump data.
Description: Failed to setup initiator portal. Error status is given in the dump data.
Description: Error occurred when processing iSCSI logon request. The request was not retried. Error status is given in the dump data.
Description: iSCSI discovery via SendTargets failed with error code 0xefff0003 to target portal *xxx.xxx.xxxx.xxxx 0003260 Root\ISCSIPRT\0000_0 .
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.
The iSCSI target device has reached its limit for the number of incoming connections.
A transient network issue temporarily prevented connectivity to the iSCSI target device.
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.
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.