pansen

There is no such hardware or software limitation, H3 devices do support SDXC cards with 128GB, below you find iozone numbers for a 128GB Samsung EVO+ made on an Orange Pi Plus 2E and here link to our documentation how to deal with SD cards: https://docs.armbian.com/User-Guide_Getting-Started/#how-to-prepare-a-sd-card
iozone -e -I -a -s 100M -r 4k -r 16k -r 128k -r 512k -r 1024k -r 16384k -i 0 -i 1 -i 2 random random kB reclen write rewrite read reread read write 102400 4 1763 1706 3941 3935 3857 960 102400 16 4179 5537 10726 10706 10127 3216 102400 128 12715 13868 20966 20948 20501 11097 102400 512 13708 17724 22606 22591 22526 12771 102400 1024 17287 18220 22897 22886 22847 13159 102400 16384 15352 18025 23100 23134 23122 13668 iozone -I -a -g 1000m -s 1000m -i 0 -i 1 -r 1k -r 4K -r 16K -r 128K -r 1024K -r 16384k random random kB reclen write rewrite read reread read write 1024000 1 421 449 992 987 1024000 4 1800 1789 3766 3755 1024000 16 5220 5662 10551 10558 1024000 128 14807 15013 20573 20565 1024000 1024 17003 17213 22773 22734 1024000 16384 16995 17182 22998 22744 iozone -O -I -i 0 -i 1 -i 2 -e -+n -r 4k -r 8k -r 12k -r 16k -s 2000m random random kB reclen write rewrite read reread read write 2048000 4 449 0 935 0 924 65 2048000 8 281 0 826 0 685 44 2048000 12 234 0 662 0 660 36 2048000 16 243 0 644 0 619 44