▁ 6 . x . ▁ ▁Nov ell ▁Storage ▁Services ▁( N SS , ▁released ▁in ▁ 1 9 9 8 ), ▁su pers eded ▁the ▁N W FS ▁format . ▁ ▁The ▁N W FS ▁on - disk ▁format ▁was ▁never ▁public ly ▁documented ▁by ▁Nov ell . ▁The ▁published ▁specific ations ▁for ▁ 3 2 - bit ▁N W FS ▁are : ▁ ▁Max imum ▁file ▁size : ▁ 4 ▁Gi B ▁ ▁Max imum ▁volume ▁size : ▁ 1 ▁Ti B ▁ ▁Max imum ▁files ▁per ▁volume : ▁ 2 ▁million ▁when ▁using ▁a ▁single ▁name ▁space . ▁ ▁Max imum ▁files ▁per ▁server : ▁ 1 6 ▁million ▁ ▁Max imum ▁directory ▁entries : ▁ 1 6 ▁million ▁ ▁Max imum ▁volumes ▁per ▁server : ▁ 6 4 ▁ ▁Max imum ▁volumes ▁per ▁partition : ▁ 8 ▁ ▁Max imum ▁open ▁files ▁per ▁server : ▁ 1 0 0 , 0 0 0 ▁ ▁Max imum ▁directory ▁tree ▁depth : ▁ 1 0 0 ▁levels ▁ ▁Char acters ▁used : ▁ASCII ▁double - byte ▁ ▁Max imum ▁extended ▁attributes : ▁ 5 1 2 ▁ ▁Max imum ▁data ▁streams : ▁ 1 0 ▁ ▁Support ▁for ▁different ▁name ▁spaces : ▁ ▁Microsoft ▁Windows ▁Long ▁names ▁( a . k . a . ▁OS / 2 ▁namespace ), ▁Unix , ▁Apple ▁Mac int osh ▁ ▁Support ▁for ▁rest oring ▁deleted ▁files ▁( sal v age ) ▁ ▁Support ▁for ▁journal ing ▁( Nov ell ▁Trans action ▁Track ing ▁System ▁a