Hi XPEH,
I'm using HP N40L, mob BIOS, 16GB none-ECC RAM, 5 x 2T WD Red DISK (5400), 4K sector format and nighthawk mob firmware microserver-dsm-4.2-02.05.2013.img and DS3612xs_3202-Repack.pat (big thanks for the great work). My file transfer speed on CIFS only gets 30~40MBps (E8400 Win7 PC to DSM with Gigabit connection).
I add an Intel Gigabit CT Single Port Copper NIC EXPI9301C, enable Jumbo Frame (8K) in DSM network interface, enable Jumbo Frame in Cisco SF300 switch, check the SMB2 and Large Frame option in DSM Windows file share. It's not getting any better. Try to disable CIFS database optimization feature, no difference as well. Before Xpenology, that HP box is running freeNAS 8.3 with LSI 9220-8i - IT mode (remove in the Xpenology setup), which can get 50+MB for CIFS.
Can you please give me any advices on the Xpenology setup?
Thanks in advance.
netware00