Can I set my boot pool up with a two drive mirror ?
Of course you can, using the installer (at install time) or the web GUI (afterward). TFM will tell you how.
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was unaware that the installer had that option … TMF ?
Thank you
TFM. The Fine Manual, from the perhaps-better-known expression RTFM. The meaning of the F may be interpreted variously.
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A link to the appropriate section of the fine manual would probably be more helpful next time.
@johnism Check here, on step 2, just select more than one drive: Installing SCALE | TrueNAS Documentation Hub
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Historically it stood for flipping because they used to be printed on physical paper.
@johnism, just understand that if one of the boot devices fail, the system might not (re)boot into TrueNAS unless you specify the other SSD as the boot option in the BIOS.
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It might have been, and would have been given, if OP had shared which version of TrueNAS he was using. OTOH, OP finding the link for Docs at the top of the page would likely have been even more helpful to him.