FreeNAS 9.1 was also the first version of FreeNAS to use the community-supported OpenZFS v5000 with Feature Flags.
fɹˈiː nˈæs nˈaɪn.wˈʌn wʌz ˈɔːlsoʊ ðə fˈɜːst vˈɜːʒən ʌv fɹˈiː ˌɛnˌeɪˈɛs tə jˈuːz ðə kəmjˈuːnᵻɾisəpˈoːɹɾᵻd ˈoʊpən zˌiːˌɛfˈɛs vˈiː fˈaɪv θˈaʊzənd wɪð fˈiːtʃɚ flˈæɡz.