SSd is pain to re-image .. usb stick i cn backup and easy replace
I think with the SATA to USB adapter you can use the SSD just like a flash drive ?
I've been using like that from past 6 months and never had any glitches with my RIG!
https://www.amazon.co.uk/USB-SATA-Adapter-Cable-Drives-en-GB-SATA-USB-3-0-converter/dp/B01N2JIQR7
Also you can the 40GB drive too & some other community members suggesting to use some good HDD too (haven't used it) & some still using the 32 GiG's flash drives which are expensive as a 40 GB SSD drive (atleast here in UK).
I guess its definitely not expensive than our 1 GPU card
Agreed. I have been using a similar device:
https://www.amazon.com/gp/product/B00HJZJI84/ref=oh_aui_search_detailpage?ie=UTF8&psc=1
I use this to connect my SSD's to another PC via USB 3.0 to image them and then connect them to the miner(s) with SATA. I don't boot from USB but it should work that way, too.