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Beginners • Re: Should a SSD for booting through USB have a DRAM cache?

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I want to create a NAS using the Pi 5 and RADXA Penta SATA HAT and I would like to use an external SSD enclosure to boot off of an NVME SSD for the speed/capacity/reliability benefits.
What? You would like the boot drive to be faster, bigger, or more reliable than the drives with the real data on?

I would want to install the OS as a small RAID1 across all the data drives. It will never be a performance bottleneck except during boot.

I wouldn't. At least not on Pi.

It's much easier to replace the Pi's OS if it's on a dedicated drive.

Statistics: Posted by thagrol — Wed Jul 09, 2025 12:03 pm



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