Welcome Guest ( Log In | Register )

Bump Topic Add Reply RSS Feed

Outline · [ Standard ] · Linear+

 Raspberry Pi, Rm100 computer that beats iPhone4S

views
     
kingkingyyk
post May 11 2017, 04:32 PM

10k Club
Group Icon
Elite
15,694 posts

Joined: Mar 2008
QUOTE(Reeson @ May 10 2017, 04:31 PM)
hi guys..
i just bought this HDD enclosure (link) & hook it up to my RPi3 via USB cable..

problem is when transferring files between HDD inside the enclosure (eg: from HDD in bay1 to HDD in bay2), the speed is really slow (~ 10MB/s).
is the RPi3 the bottleneck here?
*
Yes. https://www.raspberrypi.org/documentation/h...i/usb/README.md
That is normal to have that. The USB ports are seperated from internal USB hub (Microchip USB+Ethernet chip), so all of them are shared on 480Mbps bus. It also could due to insufficient power output from the Pi. The proper way is to have a powered USB hub connect to both Pi and external HDD. smile.gif
kingkingyyk
post May 12 2017, 07:28 AM

10k Club
Group Icon
Elite
15,694 posts

Joined: Mar 2008
QUOTE(Reeson @ May 11 2017, 09:15 PM)
the enclosure has its own power supply, not drawing power from the RPi USB port
*
Great, was wondering how the HDD is powered up with the small current from Pi. biggrin.gif
kingkingyyk
post May 12 2017, 10:19 AM

10k Club
Group Icon
Elite
15,694 posts

Joined: Mar 2008
QUOTE(Reeson @ May 12 2017, 09:21 AM)
so what do you think causing the slow speed?

RPi is only supposed to be telling HDDs to transfer file to each other, the data doesnt actually goes into RPi right?
*
I do think Pi needs to buffer the data, so that could be the bottleneck hmm.gif
kingkingyyk
post Aug 2 2019, 08:22 AM

10k Club
Group Icon
Elite
15,694 posts

Joined: Mar 2008
QUOTE(seehong @ Jul 29 2019, 10:15 PM)
Just received email from Cytron informing me shipment of RP4B will be late by 2 days. To compensate, Cytron is crediting RM20 into our Cytron Cash account.
*
Yup, got that as well. sad.gif
kingkingyyk
post Aug 7 2019, 07:32 PM

10k Club
Group Icon
Elite
15,694 posts

Joined: Mar 2008
user posted image

Got mine today as well. smile.gif Motioneye performance is darn good.

This post has been edited by kingkingyyk: Aug 7 2019, 07:35 PM
« Next Oldest · Hardware Clubs / Brand Discussions · Next Newest »
 

Add ReplyOptions
 

Change to:
| Lo-Fi Version
 0.0525sec    0.55    7 queries    GZIP Disabled
Time is now: 27th November 2025 - 04:27 AM
All Rights Reserved © 2002- 2025 Vijandren Ramadass (~unite against racism~)
Removal Request
Powered by Invision Power Board © 2025  IPS, Inc.