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When you call DELL customer support for any help, they will ask for a Service Tag. You also need service tag to download drivers and documentations from DELL support website.
When you have physical access to the system, you can easily identify the service tag affixed on the body of the server. DELL support site shows the exactly location of the service tag and express code stickers for various DELL equipments.
When you don’t have physical access to the server, you can get the same information remotely from the OS level. Using Windows or Linux command line you can easily get DELL service tag as explained below.
Get DELL Service Tag on remote Windows system
Login to the Windows remote-host using VNC or remote desktop connection. Use WMIC on Windows to get service tag as shown below.
C:\>wmic bios get serialnumber
NOTE: this command will get the serial number not only for DELL systems, but even for HP, IBM or other systems.
Following WMIC command will give make and model number along with service tag.
C:\>wmic csproduct get vendor,name,identifyingnumber
IdentifyingNumber Name Vendor
ABCDEF1 PowerEdge 2950 Dell Inc.
If VNC or remote desktop connection to the remote-host is not available, execute the following from the local-host to get the service tag of the remote-host.
C:\>wmic /user:administrator /node:remote-host bios get serialnumber
[Note: Replace remote-host with the machine name of your remote-host.]
Get DELL Service Tag on remote Linux system
Login to the Linux remote-host using SSH. Use dmidecode on Linux to get service tag as shown below.
[remote-host]# dmidecode -s system-serial-number