Dell PowerEdge T140 EMC PowerEdge Servers Troubleshooting Guide - Page 112

OpenManage Essentials does not recognize the server, Unable to connect to iDRAC port through a switch

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The TRIM/UNMAP command must be supported by the operating system, the drive, and the controller in order to work. The TRIM/ UNMAP command could result in higher SSD performance from both the reduced data needed to be rewritten during garbage collection and the higher free space resulting on the drive. Dell enterprise drives which are currently shipped have high performance and endurance so they do not yet support these commands even if the OS supports them. These features are being investigated for subsequent Dell SSD offerings. OpenManage Essentials does not recognize the server About this task OpenManage Essentials does not recognize the server. To setup the a new discovery range and inventory and enable WMI protocol. Steps 1 Launch OpenManage Essentials. 2 Navigate to Manage --> Discovery and Inventory. 3 In the left panel, click Add Discovery Range. 4 Enter the IP address of the specific client device or the IP range having all the client devices with the subnet mask details. 5 Click Next. 6 In the ICMP Configuration page, click Next. 7 Protocol Selection From Dell Command | Monitor 9.0 onwards, both SNMP and WMI protocols are supported for discovery and inventory. Select the required protocols (only SNMP or only WMI or both SNMP and WMI) and enter the required information. It is recommended to use WMI protocol for discovery and inventory. The difference of inventory information fetched using WMI versus SNMP protocol is specified. Fetching of hardware logs is possible only using WMI protocol. • For discovery and inventory through SNMP protocol, set the community strings in SNMP Configuration page. • To disable SNMP discovery uncheck the Enable SNMP discovery • For discovery and inventory through WMI protocol, click Next, otherwise click Finish. • In the WMI configuration page, select Enable WMI discovery. Provide the WMI credentials of remote device. • Click Finish. Unable to connect to iDRAC port through a switch You can use iDRAC through various interfaces and methods. The interfaces include web interface, RACADM, Redfish, and so on. You can connect to iDRAC either locally or remotely. If you try to connect to iDRAC using the iDRAC port through a switch, you may need to perform additional configuration on the switch to allow the connection to be successful. Alternatively, bypass the switch and connect the system directly to the iDRAC port. NOTE: For more information on connecting to iDRAC, see the iDRAC manuals at Dell.com/idracmanuals Lifecycle Controller is not recognizing USB in UEFI mode When there are combinations of servers connected, you need to use the same mode for all servers. USB driver is not recognized on Lifecycle controller. You can install on BIOS mode and not on UEFI mode. Guidance on remote desktop services A Remote Desktop Services deployment is the infrastructure used to share applications and resources with users. Depending on the experience you want to provide, you can make it as small or complex as you need. Remote Desktop deployments are easily scaled. You can 112 Server management software issues

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The TRIM/UNMAP command must be supported by the operating system, the drive, and the controller in order to work. The TRIM/
UNMAP command could result in higher SSD performance from both the reduced data needed to be rewritten during garbage collection
and the higher free space resulting on the drive. Dell enterprise drives which are currently shipped have high performance and endurance
so they do not yet support these commands even if the OS supports them. These features are being investigated for subsequent Dell SSD
offerings.
OpenManage Essentials does not recognize the server
About this task
OpenManage Essentials does not recognize the server. To setup the a new discovery range and inventory and enable WMI protocol.
Steps
1
Launch OpenManage Essentials.
2
Navigate to
Manage --> Discovery and Inventory
.
3
In the left panel, click
Add Discovery Range.
4
Enter the IP address of the
specific
client device or the IP range having all the client devices with the subnet mask details.
5
Click
Next
.
6
In the ICMP
Configuration
page, click
Next
.
7
Protocol Selection
From Dell Command | Monitor 9.0 onwards, both SNMP and WMI protocols are supported for discovery and inventory. Select the
required protocols (only SNMP or only WMI or both SNMP and WMI) and enter the required information.
It is recommended to use WMI protocol for discovery and inventory. The
difference
of inventory information fetched using WMI versus
SNMP protocol is
specified.
Fetching of hardware logs is possible only using WMI protocol.
•
For discovery and inventory through SNMP protocol, set the community strings in SNMP
Configuration
page.
•
To disable SNMP discovery uncheck the Enable SNMP discovery
•
For discovery and inventory through WMI protocol, click Next, otherwise click Finish.
•
In the WMI
configuration
page, select Enable WMI discovery. Provide the WMI credentials of remote device.
•
Click Finish.
Unable to connect to iDRAC port through a switch
You can use iDRAC through various interfaces and methods. The interfaces include web interface, RACADM,
Redfish,
and so on. You can
connect to iDRAC either locally or remotely.
If you try to connect to iDRAC using the iDRAC port through a switch, you may need to perform additional
configuration
on the switch to
allow the connection to be successful. Alternatively, bypass the switch and connect the system directly to the iDRAC port.
NOTE:
For more information on connecting to iDRAC, see the iDRAC manuals at
Dell.com/idracmanuals
Lifecycle Controller is not recognizing USB in UEFI
mode
When there are combinations of servers connected, you need to use the same mode for all servers. USB driver is not recognized on
Lifecycle controller. You can install on BIOS mode and not on UEFI mode.
Guidance on remote desktop services
A Remote Desktop Services deployment is the infrastructure used to share applications and resources with users. Depending on the
experience you want to provide, you can make it as small or complex as you need. Remote Desktop deployments are easily scaled. You can
112
Server management software issues