Use my EX4100 on 2 servers

i EX4100 with 4 drives , can i do each 2 with raid 1 and they are assigned to different servers ?
(hooking up my NAS to the network)

Yes, you can assigned two volumes of each 2 drives in RAID1 to different servers from different shares. Two volumes of each RAID1 drive pair would be accessed by different shares and then these can be assigned to different servers.