▁Second ▁Al ▁Sh ug art ▁era ▁( 1 9 9 0 s ) ▁ ▁In ▁September ▁ 1 9 9 1 , ▁Tom ▁Mitchell ▁res igned ▁as ▁president ▁under ▁pressure ▁from ▁the ▁board ▁of ▁direct ors , ▁with ▁Al ▁Sh ug art ▁re ass uming ▁presiden cy ▁of ▁the ▁company . ▁Sh ug art ▁ref oc used ▁the ▁company ▁on ▁its ▁more ▁luc r ative ▁mark ets ▁and ▁on ▁main frame ▁drives ▁instead ▁of ▁external ▁drives . ▁He ▁also ▁pulled ▁away ▁from ▁the ▁practice ▁of ▁out s our cing ▁the ▁production ▁of ▁components ▁over se as , ▁which ▁allowed ▁Se ag ate ▁to ▁better ▁keep ▁up ▁with ▁demand ▁as ▁the ▁demand ▁for ▁PC s ▁increased ▁extremely ▁rapidly ▁in ▁ 1 9 9 3 ▁across ▁the ▁market . ▁This ▁included ▁a ▁domestic ▁partners hip ▁with ▁Cor ning ▁Inc ., ▁which ▁began ▁using ▁a ▁new ▁glass ▁cer am ic ▁comp ound ▁to ▁manufact ure ▁disk ▁substr ates . ▁In ▁ 1 9 9 1 , ▁Se ag ate ▁also ▁introduced ▁the ▁Bar rac uda ▁H DD , ▁the ▁industry ' s ▁first ▁hard ▁disk ▁with ▁a ▁ 7 2 0 0 - R PM ▁sp ind le ▁speed . ▁ ▁In ▁May ▁ 1 9 9 3 , ▁Se ag ate ▁became ▁the ▁first ▁company ▁to ▁cum ul atively ▁ship ▁ 5 0 ▁million ▁H DD s ▁over ▁its ▁firm ' s ▁history . ▁The ▁following ▁year ▁Se ag ate ▁Technology ▁Inc ▁moved ▁from ▁the ▁Nas da q ▁exchange ▁to ▁the ▁New ▁York ▁Stock ▁Exchange