The hardware requirements for SLES are pretty basic, and anything you buy
or build these days will probably meet them easily.

The bigger question is what SAP HANA will want for a test environment, and
for that I would check SAP's HANA documentation. The smallest environment
I've seen for a customer has been a quaint system with 512 GiB RAM; wish I
had one of those just hanging around.

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Good luck.

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