NAS case testing with Armbian_5.88_Rockpro64_Ubuntu_bionic_default_4.4.180_desktop
#1
Note: tests (1) to (5) with CPU Fan control set at 127 with open NAS case. SATA card from Pine64.

(1) Creating a 40GB file on SATA drive

WR Red 4TB

root@rkpro64:~# dd if=/dev/zero of=/mnt/hda/40gb.txt bs=4096 count=10485760
10485760+0 records in
10485760+0 records out
42949672960 bytes (43 GB, 40 GiB) copied, 237.795 s, 181 MB/s

WD Black 4TB

root@rkpro64:~# dd if=/dev/zero of=/mnt/hd1/40gb.txt bs=4096 count=10485760                                                   
10485760+0 records in
10485760+0 records out
42949672960 bytes (43 GB, 40 GiB) copied, 198.201 s, 217 MB/s

HGST He 10TB

root@rkpro64:~# dd if=/dev/zero of=/mnt/hd1/40gb.txt bs=4096 count=10485760
10485760+0 records in
10485760+0 records out
42949672960 bytes (43 GB, 40 GiB) copied, 173.657 s, 247 MB/s

So the WR Red 4TB is not too surprisingly the slowest, it's also the cheapest and consumes much less power and runs quite "cold" compared to the others (for this last thing, I did not measure it, I just touch the disk). It's 5400rpm vs 7200rpm anyway. Otherwise the HGST basically leaves the WD black in the dust.

(2) Both at the same time (hd1 = WD Black on SATA port 3, hd2 = HGST on SATA port 4)

root@rkpro64:~# dd if=/dev/zero of=/mnt/hd1/40gb.txt bs=4096 count=10485760
10485760+0 records in
10485760+0 records out
42949672960 bytes (43 GB, 40 GiB) copied, 208.836 s, 206 MB/s

root@rkpro64:~# dd if=/dev/zero of=/mnt/hd2/40gb.txt bs=4096 count=10485760
10485760+0 records in
10485760+0 records out
42949672960 bytes (43 GB, 40 GiB) copied, 255.631 s, 168 MB/s

So, if you write on both drives at the same time port 2 comes... well, second.

(3) Copying each file other one after one (hd1 = HGST on SATA port 3, hd2 = WD Black on SATA port 4)

root@rkpro64:~# time cp /mnt/hd1/40gb.txt /mnt/hd2/40gb-1.txt

real    3m56.745s
user    0m0.368s
sys    2m49.948s

root@rkpro64:/var/log# time cp /mnt/hd2/40gb.txt /mnt/hd1/40gb-1.txt

real    3m40.534s
user    0m0.392s
sys    2m45.976s

(4) NAS case (still open), testing power consumption (n.nnA) and temperature (nnC), no disks attached:

- Average 1.06A when system is idle with CPU Fan control set at 127 (a little bit noisy)
- Average 1.12A when system is idle with CPU Fan control set at 255 (very noisy)

(5) NAS case (still open)

- With one WD Red 4TG plugged-in, writing 40GB file (zeroes): 1.28 to 1.41A
- Burst to 2.2A at boot for less than a second with two WD Red 4TB
- With two WD Red 4TB, writing 40GB file (zeroes) on both: 1.45 to 1.68A, CPU temp max: 45C, Disk a: 30C and 180MB/sec, Disk B: 30C and 171MB/sec
- Same plus stressing CPU (sqrt) on 4 cores: 1.57 to 1.80, CPU temp max: 51C
- Same plus two additional SSD attached via unpowered USB 3 (SSD not connected to SATA): 1.90A to 2.12A, CPU temp max: 55C (I believe the 55C was reached because I did not wait too much after the previous test).

Note: the test below is now with the NAS case closed. CPU Fan control still set at 127. Case Fan 80mm set at 2/3 speed. Room temperature 24C.

- Idle CPU at 34C
- Idle disks at 29C

(6) Writing 40GB file (zeroes) on both disks.
- 1.64A to 1.89A, CPU temp max: 45C, both disks at 30C. Note: the slightly extra load in amps is from the case FAN and the mini-card controller I added.

CONCLUSION: so far, so very good, extra room in power with the 12v 5A PSU.

Other remarks:
- The U.FL MHF4 plugs are a hassle, once you start to put all the pieces into places they have the tendency to disconnect. You basically have to connect them last which a big pain in the neck when you have big fingers.
- I'll test again the temps with the case fan at half and 1/3 the power.
- I'll receive the Marvell 88SE9230 4-port card from Aliexpress in about a month (just to play with 2 HD + 2 SSD). For HyperDuo it will be a challenge because I did not find a software to configure it on Linux yet (but there is a driver) and there is no BIOS so no config via the BIOS either. Still Googling. Anyway, I think this card will end up in a PC.
#2
Good post. I think the wiki section devoted to the NAS Case could benefit from information about thermals etc., please edit the wiki entry if you agree.
You can find me on IRC, Discord and Twitter


#3
(06-17-2019, 04:01 AM)Luke Wrote: Good post. I think the wiki section devoted to the NAS Case could benefit from information about thermals etc., please  edit the wiki entry if you agree.

^^^ good idea


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