Windows Server 2012 R2 - SMB keine Funktion

Hallo zusammen,

wir haben seit ca. 3 Wochen das Problem das sich bei einigen unserer Fileserver der SMB-Dienst aufhängt. Der Neustart des Dienstes "Server" geht leider auch nicht. Es hilft dabei nur ein Neustart des gesamten Servers. Es handelt sich dabei ausnahmslos um Windows Server 2012 R2 Fileserver auf Basis von VMWare ESX. Im Eventlog für den SMB-Client tauchen folgende Meldungen auf:

Source: SMB-Client ID: 30809
A request timed out because there was no response from the server.

Server name: \xxxxx
Session ID:0x0
Tree ID:0x0
Message ID:0x0
Command: Negotiate

Guidance:
The server is responding over TCP but not over SMB. Ensure the Server service is running and responsive, and the disks do not have high per-IO latency, which makes the disks appear unresponsive to SMB. Also, ensure the server is responsive overall and not paused; for instance, make sure you can log on to it.

Source: SMB-Client ID: 30804
The network connection failed.
Error: The transport connection is now disconnected.

Server name: \xxxx
Server address: [fe80::9468:8803:1130:68%12]:445
Connection type: Wsk

Guidance:
This indicates a problem with the underlying network or transport, such as with TCP/IP, and not with SMB. A firewall that blocks port 445 or 5445 can also cause this issue.

Source: SMB-Client ID: 30805
The client lost its session to the server.
Error: {Device Timeout}
The specified I/O operation on %hs was not completed before the time-out period expired.

Server name: \xxxxx
Session ID: 0x68003C000B09

Guidance:
If the server is a Windows Failover Cluster file server, then this message occurs when the file share moves between cluster nodes. There should also be an anti-event 30806 indicating the session to the server was re-established. If the server is not a failover cluster, it is likely that the server was previously online, but it is now inaccessible over the network.

Ich habe dazu folgende TechNet-Artikel gefunden nur richtig weiterhelfen tun diese nicht. Es sieht dabei mehr nach Try & Error aus:

http://social.technet.microsoft.com/Forums/en-US/e9567167-22db-4b8c-9f96-a08b97d507f9/server-2012-r2-file-server-stops-responding-to-smb-connections?forum=winserverfiles

https://social.technet.microsoft.com/Forums/en-US/e9567167-22db-4b8c-9f96-a08b97d507f9/server-2012-r2-file-server-stops-responding-to-smb-connections?forum=winserverfiles

Eventuell hat ja von euch jemand eine Idee.

Danke & Gruß