[What hardware are you using ? and how do you use them ?]

home NAS (Xpenology):

- file server, DLNA, FTP, DL Station, Photo Station, Cloud ...

- Jun's Boot loader 1.01, DSM 6.0.2, update 9

- build on Asus B85M-K, 4x SATA3 + 2xSATA2, socket 1150

- CPU Xeon E3-1270-v3 @ 800 - 3500 MHz (CPU Power Saving script)

- RAM 2x8 GB DDR3 @ 1600 MHz

- extension SATA ports, some "no name" 3x PCI-e to 2xSATA3 card (from China, about 12 $ for piece)

- data HDD = 10x Seagate 2TB, 2,5", laptop model @ RAID 5 (about 16,2 TB for use)

- Hot Spare HDD = 1x Seagate 2TB, 2,5", laptop model

- SSD Cache = 1x SSD Samsung PM871, 512 GB

- an old ATX case, native 7x 3,5" and 4x 5,25" position, with reduction its 22 positions for 2,5" HDD or SSD

- super quiet PSU 450 W, inaudible CPU fan, disabled front and back case fan (fans ON only when rebuilding RAID)

 

other Syno devices under my administration: DS211j , DS212j, DS 212+, DS213j, DS 216j

- all with last DSM (for old models its DSM 5, for 212+ and newer its DSM 6)

- all full of 2 TB / 3 TB WD RED HDDs

- all in RAID1 (for 2 bays NAS), ext4

[DSM 6 does not use all cores?]

Hi,

 

I use DSM 6 + Jun's Boot loader 1.01 with CPU Xeon E3-1270-v3. I have 4 cores without hyper threading, 8 cores with HT ON.

 

Try disable HT in BIOS - if you have 6 core Xeon, with HT its 12 cores, Synology (Xpenology) can handle only 8 CPUs.