Alternative firmware fvdw-sl SPD8020, Lacie network space vs1,vs2 and max, 5big version 1&2, 2big version 1&2, internet space vs1, edmini_v2, D2 network version 1&2, raspberry Pi b
I don't know what the original speed of a nwsp1 was. But I reach on samba server or FTP about 7-8 and sometimes 10 MB/s using a gibit LAN connection. This is for bigger files. Small files will slow down transfer considerably because of disk activity needed to write them into the file system.