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SnapScale/RAINcloudOS 4.1 Administrator’s Guide
C - Troubleshooting
Access Denied Message Appears after Configuring Microsoft Domain Security
Customers who have configured local users and local groups with the same name as their
domain users and groups can have security conflicts if they integrate with Microsoft Domain
Security. The SnapScale will authenticate the users as local SnapScale users before
authenticating through the Domain. However, the Domain users/groups may be the ones that
had been granted access to the shares.
Be careful not to add local users or groups that are duplicates of those that are found on the
Windows domain controller.
The SnapScale Does Not Operate Properly on a Network Running Gigabit-Full-Duplex
For Gigabit Ethernet to operate properly, both the switch and the SnapScale primary
Ethernet port must be set to
Auto
(autonegotiate). Any other setting will result in unexpected
behavior and reduced performance.
The Network Does Not Have a DHCP Server and SnapScale IP Address Is Unknown
Install SnapServer Manager (available from the Overland Storage website) onto a client
workstation on the same subnet as the SnapScale. You can then use the utility to discover all
SnapServers, SnapScale clusters, and Uninitialized nodes on that network segment, and to
assign static IP addresses as necessary.
Problems Occur with Domain Controller Authentication
You are receiving the following errors in your error log:
SMB: Domain Controller unavailable
SMB: Username not connected to Domain Controller
This means that either your Domain Controller is down, or the SnapScale is unable to reach it.
Because it cannot communicate with the Domain Controller, it is not able to authenticate the
user. Check to make sure the Domain Controller is online, is consistently reachable via the
network, and that users can authenticate to the Domain Controller.
You Start Your SnapScale but Cannot See It on Network
Ensure that the Ethernet cable is connected securely to both the network port and the primary
Ethernet port. Also, check to see that the Link light on the front of the SnapScale is lit (solid
green). If the Link light is off, this is normally caused by a mismatch between the switch/hub
and the Ethernet port on the SnapScale. To resolve this problem, verify that all settings (if
using multiple Ethernet ports) on the switch/hub match the setting on the cluster. When a
node is shipped from the factory, both ports are set to autonegotiate. Therefore, the switch/hub
must
be set to autonegotiate to initially connect to the cluster.
A SnapScale cluster is configured by default to acquire an IP address from a DHCP server. If
no DHCP server is found on the network, the SnapScale defaults to an IP address in the range
of 169.254.xxx.xxx and is labeled ZeroConf in SSM. While you may not be able to see the
server on your network, you can discover the SnapScale using either the default cluster name
or running the SSM utility.
You Try to Mount to a Share on Your SnapScale from Your Linux Workstation and You
Receive an RPC Timeout Message
Check the firewall configuration to your Linux workstation. Be sure you have not blocked the
ability to receive TCP or User Datagram Protocol (UDP) communications. If problems persist,
contact Overland Storage Technical Support.
