USB-to-SATA performance on OPi Plus

miha · Published in 2015-12-12 21:59:57

Edited by miha at 2015-12-12 22:01

Hi,

Power via barrel plug with 2.1A PSU and 6A PSU. Now 6A model in use. SSD states on label that it requires 1A.

# smartctl -a /dev/sda
smartctl 5.41 2011-06-09 r3365 [armv7l-linux-3.4.39] (local build)
Copyright (C) 2002-11 by Bruce Allen, [url=http://smartmontools.sourceforge.net]http://smartmontools.sourceforge.net[/url]
=== START OF INFORMATION SECTION ===
Device Model: KINGSTON SV300S37A120G
Serial Number: <censored>
LU WWN Device Id: 5 0026b7 <censored>
Firmware Version: 605ABBF0
User Capacity: 120,034,123,776 bytes [120 GB]

Copy code

Br
-miha

fritz · Published in 2015-12-13 03:09:58

Well, you can use the fastest SSD disk, but the GL830 (usb-SATA Bridge) bad performance remains the same.
I hope that on the H64 OPI plus3 @steven will use a faster chip.

bronco · Published in 2015-12-13 03:23:37

fritz replied at 2015-12-13 03:09
I hope that on the H64 OPI plus3 @steven will use a faster chip.

In the A64's user manual SATA is mentioned one time: "PLL clock output enable. (Just for the SATA Phy)". Therefore still some hope that the H64 might contain SATA again.

If the H64 doesn't have SATA capabilities and is otherwise compatible to the A64 then no USB-to-SATA bridge would be the best idea since the A64 features only 1 USB host port and a USB-to-SATA-bridge behind an USB hub will further decrease performance. But since customers are dumb as hell they only count the externally available USB ports (sharing bandwidth) and not the SoC's that are really used.

bronco · Published in 2015-12-13 07:14:06

miha replied at 2015-12-12 21:59
Hi,

Power via barrel plug with 2.1A PSU and 6A PSU. Now 6A model in use. SSD states on label that i ...

Ok, I always forget that SSDs exist that need enormous amounts of energy (my 'test SSD' being an 120GB Samsung EVO 840).

BTW: http://www.orangepi.org/orangepi ... 6&fromuid=29411

DC-IN through GPIO pins over a really crappy PoE connection: Still being able to operate at 1.2 GHz without heatsink with adjusted dvfs settings. Maybe you should try your other PSU again and adjust dvfs settings before?

bronco · Published in 2015-12-16 03:04:40

JFTR: Since Igor provided an Armbian test image for OPi plus I gave USB performance a try: The H3 not using the crappy 3.4.39 kernel from Allwinner but mainline (4.4.0-rc4) is the fastest USB 2.0 device I ever measured:

http://forum.armbian.com/index.php/topic/504-quick-review-of-orange-pi-pc/#entry3244

In other words: Users of the OPi plus will suffer even more from the slow and crappy onboard USB-to-SATA bridge next year since using any external USB enclosure with an UASP capable bridge chip you'll get close to 40 MB/s!

Galeots · Published in 2016-2-16 02:46:26

Hi
how do I enable sata by kernel !? image OpenELEC kodi not work!?

Galeots · Published in 2016-2-16 16:51:29

enable sata for orange pi plus 2 help my!

Galeots · Published in 2016-2-16 16:57:11

fritz replied at 2015-12-2 17:52
Well
with mainline 4.3 kernel :

enable sata for orange pi plus 2 help my!