On the enclosure
The Service Tag and Express Service Code are found on the front of the system by pulling out the information tag. Alternatively, the information may be on a sticker on the back of the storage system chassis.
Using PowerVault Manager
The About panel (Maintenance > About) shows information about the system; its hardware, and its storage configuration.
The Service Tag is the seven-digit alphanumeric number that is written after the enclosure <number>:

Using the Command-Line Interface (CLI)
The Service Tag is the seven-digit alphanumeric number that is shown in the output of either of the following commands:
show service-tag-infoshow enclosures# show service-tag-info Encl Service Tag -------------------------------------- 0 ABCD123 -------------------------------------- Success: Command completed successfully. (2022-01-21 04:16:23)
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