btrfs raid with ssd and hdd

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hi, everyone


I have a btrfs raid0 (metadate raid1;data raid0) on 4 HDD (2 * 1T + 2 * 500G):



Label: none  uuid: 0f87c5db-7dd5-493b-aa50-63a8b1f5304c
    Total devices 4 FS bytes used 700.48GiB
    devid    2 size 882.49GiB used 242.03GiB path /dev/sdc3
    devid    3 size 465.76GiB used 232.00GiB path /dev/sdb
    devid    4 size 465.76GiB used 232.00GiB path /dev/sdd
    devid    5 size 931.51GiB used 16.03GiB path /dev/sda


and newly get 2 new device 1T SSD + 4T HDD


how about add these 2 device to raid0?


what's better solution?

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