▁October , ▁ 2 0 0 8 . ▁They ▁can ▁be ▁re config ured ▁and ▁optimized ▁to ▁accommod ate ▁changing ▁business ▁requirements . ▁This ▁mid range ▁product ▁family ▁is ▁built ▁around ▁a ▁serial ▁attached ▁SC SI ▁( S AS ) ▁architecture ▁and ▁has ▁a ▁symmetric ▁active / active ▁controller ▁design . ▁ ▁This ▁family ▁of ▁storage ▁systems ▁include : ▁ ▁Hit achi ▁Ada pt able ▁Mod ular ▁Storage ▁ 2 1 0 0 ▁ ▁Hit achi ▁Ada pt able ▁Mod ular ▁Storage ▁ 2 3 0 0 ▁ ▁Hit achi ▁Ada pt able ▁Mod ular ▁Storage ▁ 2 5 0 0 ▁ ▁Hit achi ▁Ada pt able ▁Mod ular ▁Storage ▁ 2 5 0 0 DC ▁ ▁All ▁models ▁support ▁RA ID - 6 ▁disk ▁configurations , ▁F ib re ▁Channel ▁and ▁i SC SI ▁host ▁interfaces , ▁as ▁well ▁as ▁the ▁ability ▁to ▁inter mix ▁Flash ▁drives ▁with ▁S AS ▁and ▁S ATA ▁disk ▁drives ▁in ▁the ▁same ▁t ray . ▁They ▁also ▁support ▁both ▁F ib re ▁Channel ▁and ▁i SC SI ▁host ▁interfaces ▁in ▁the ▁same ▁controller . ▁ ▁The ▁A MS ▁ 2 0 0 0 ▁family ▁of ▁storage ▁systems ▁are ▁available ▁with ▁just ▁a ▁few ▁ter aby tes ▁of ▁storage ▁up ▁to ▁ 1 , 4 1 7 TB ▁of ▁storage . ▁These ▁storage ▁systems ▁support ▁upgrade ▁in ▁place ▁to ▁larger ▁models ▁of ▁the ▁A MS ▁ 2 0 0 0 ▁family ▁as ▁well ▁as ▁migration ▁to ▁new ▁RA ID ▁groups ▁while ▁the ▁system ▁is ▁in ▁operation .