http://www.thermofisher.com/order/catalog/product/4406985
(Applied Biosystems 7500 Fast DX Real-Time PCR Instrument with SDS 1.4 software.)
I'll bet the Roche doesn't require a PC running Windows software that still needs manual defragging:
> When to Clean Up and Defragment the Hard Drive
> • At least once every month
> • When a message is displayed by the Windows operating system instructing you to defragment
https://assets.thermofisher.com/TFS-Assets/LSG/manuals/44069...
(Page 47)