So, it seems that there's an issue with the Dell PERC H310 controller, when it's in JBOD mode, where the performance of SSD drives is severely affected. Dell support said that the issue only manifests when the controller in the JBOD mode.
Hence my question: if I configure it as a RAID instead of JBOD, where all existing hard drives would be converted to a single-disk RAID0 - will FreeNAS recognize them as members of zpool or will I have to backup all the data, recreate the zpool and then restore the data from the backup?
Hence my question: if I configure it as a RAID instead of JBOD, where all existing hard drives would be converted to a single-disk RAID0 - will FreeNAS recognize them as members of zpool or will I have to backup all the data, recreate the zpool and then restore the data from the backup?