Loader: Jun 1.0.3b (DS3617xs)
DSM: DSM 6.2.3-25426 Update 3
CPU: Intel(R) Xeon(R) CPU E5-2630 v3 @ 2.40GHz
RAM: 64GB DDR4
Volume 1: 4x 1TB SATA SSDs in RAIDF1
Volume 2: 8x 10TB 7200RPM SAS HDD SHR-1
root@nas:/# dd if=/dev/zero bs=1M count=1024 | md5sum
1024+0 records in
1024+0 records out
1073741824 bytes (1.1 GB) copied, 2.05894 s, 522 MB/s
root@nas:/volume1# dd bs=1M count=256 if=/dev/zero of=/volume1/testx conv=fdatasync
256+0 records in
256+0 records out
268435456 bytes (268 MB) copied, 0.398221 s, 674 MB/s
root@nas:/volume1# dd bs=1M count=256 if=/dev/zero of=/volume2/testx conv=fdatasync
256+0 records in
256+0 records out
268435456 bytes (268 MB) copied, 1.51573 s, 177 MB/s