Well, I try to fin some issues in the log files, I read some of them : critical, error, syslog, etc... without success.
I don't know what I'm looking for.
For this server, I use DSS V6.0up75.8401.5377 64bit Lite release.
2 Intel Corporation 82571EB Gigabit Ethernet Controller (rev 06) and 2 Intel Corporation 82574L Gigabit Network Connection as ISCSI Target in different sub LANs.
Jumbo frame is activate in all chain.
1 3Ware controler with HDD SAS 15k in Raid6 mode for one array of 1.6 To, 500 Go in used for 10 VM.
Glad to hear that, well we can't tell for sure what happened without have a look to the system logs first, but it could be an issue related to the initiator connection, so it's better to check the initiator settings, also try to update to the latest build as that will give you the latest drivers for your hardware which will fix and update your old drivers.