Seems the Speeds are ok for this machine. My 3+ days restore w. avg 40mb transferrate could be the overload of the internal ports!?
Scandisk 64GB SSD (SDSSDP064G) (on the 5th internal Sata Port, 3GB Link enabled w. mod Bios)
Write zeros, this ssd is slow:
root@media:/INTERNAL# dd if=/dev/zero of=/testfile bs=1M count=1024 conv=fdatasync,notrunc
1073741824 bytes (1.1 GB, 1.0 GiB) copied, 12.0112 s, 89.4 MB/s
Read testfile with zeros, cache at work:
root@media:/INTERNAL# dd if=/testfile of=/dev/nul bs=1M count=1024 conv=fdatasync,notrunc
1073741824 bytes (1.1 GB, 1.0 GiB) copied, 1.29201 s, 831 MB/s
Read movie file, acceptable read performance:
root@media:/INTERNAL# dd if=/zzzz.mp4 of=/dev/nul bs=1M count=1024 conv=fdatasync,notrunc
1073741824 bytes (1.1 GB, 1.0 GiB) copied, 4.44178 s, 242 MB/s
ZFS Raid (Z1, no compression, 4x 3TB ST33000651AS):
Write zeros:
root@media:/INTERNAL# dd if=/dev/zero of=/INTERNAL/testfile bs=1M count=1024 conv=fdatasync,notrunc
1073741824 bytes (1.1 GB, 1.0 GiB) copied, 8.8095 s, 122 MB/s
Read testfile with zeros, cache at work:
root@media:/INTERNAL# dd if=/INTERNAL/testfile of=/dev/nul bs=1M count=1024 conv=fdatasync,notrunc
1073741824 bytes (1.1 GB, 1.0 GiB) copied, 1.89859 s, 566 MB/s
Read movie file:
root@media:/INTERNAL# dd if=/INTERNAL/VIDEO/MOVIES/zzzz.mp4 of=/dev/nul bs=1M count=1024 conv=fdatasync,notrunc
1073741824 bytes (1.1 GB, 1.0 GiB) copied, 6.05504 s, 177 MB/s
Here are the crosscopy operations, they are slower then the /dev/zero operations above:
RAID -> SSD, movie file:
root@media:/INTERNAL# dd if=/INTERNAL/VIDEO/MOVIES/zzzz.mp4 of=/zzzz2.mp4 bs=1M count=1024 conv=fdatasync,notrunc
1073741824 bytes (1.1 GB, 1.0 GiB) copied, 16.4298 s, 65.4 MB/s
SSD -> RAID, movie file:
root@media:/INTERNAL# dd if=/zzzz.mp4 of=/INTERNAL/zzzz2.mp4 bs=1M count=1024 conv=fdatasync,notrunc
1073741824 bytes (1.1 GB, 1.0 GiB) copied, 10.3434 s, 104 MB/s
P.S. i can saturate the GB connection!