USB 3 device for hard disk

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userX
Posts: 119
Joined: Thu Sep 15, 2011 11:51 am

USB 3 device for hard disk

Post by userX »

When I mount a hard disk enclosure made with USB 3 capability, using IFL do I need to include a device driver to realize the USB 3 speed?
TeraByte Support(TP)
Posts: 305
Joined: Wed Aug 31, 2011 4:22 pm

Re: USB 3 device for hard disk

Post by TeraByte Support(TP) »

userX wrote:
> When I mount a hard disk enclosure made with USB 3 capability, using IFL do
> I need to include a device driver to realize the USB 3 speed?

The USB3 driver is included in the Linux kernel, and shoud load automatically. You can check if it has been loaded by running the
command 'lsmod | grep xhci', which should show a line starting with 'xhci_hcd' similar to this one:
xhci_hcd 60378 0

If you get that line, it means the driver is loaded, and should be giving you USB3 speeds. If it doesn't show that line, I'd suggest
running 'dmesg | grep -i xhci' to see the kernel boot messages for that driver - see if there's any error messages there.
userX
Posts: 119
Joined: Thu Sep 15, 2011 11:51 am

Re: USB 3 device for hard disk

Post by userX »

Thank you, Tom. I was trying to find the link for change-log of IFW so that I could see the reason for changing to 8.2a. Where is the link?
TeraByte Support(TP)
Posts: 305
Joined: Wed Aug 31, 2011 4:22 pm

Re: USB 3 device for hard disk

Post by TeraByte Support(TP) »

userX wrote:
> Thank you, Tom. I was trying to find the link for change-log of IFW so that
> I could see the reason for changing to 8.2a. Where is the link?

The IFW upgrade history is here:
http://www.terabyteunlimited.com/upgrad ... indows.htm

But changes affecting IFL would be in the IFL upgrade history here:
http://www.terabyteunlimited.com/upgrad ... -linux.htm

Nothing that would affect USB3 was changed in IFL when going from 2.82 to 2.82a.
TeraByte Support
Posts: 3629
Joined: Thu May 05, 2011 10:37 pm

Re: USB 3 device for hard disk

Post by TeraByte Support »

don't forget you need to use a USB3 cable and USB3 port on the computer.

"userX" wrote in message news:5849@public.image...

When I mount a hard disk enclosure made with USB 3 capability, using IFL do
I need to include a device driver to realize the USB 3 speed?

userX
Posts: 119
Joined: Thu Sep 15, 2011 11:51 am

Re: USB 3 device for hard disk

Post by userX »

> "don't forget you need to use a USB3 cable and USB3 port on the computer."

I got both ends covered. :) Incidentally, I believe that USB2 cable does not fit the USB3 port, though not conversely (i.e., backwards compatibility only).
userX
Posts: 119
Joined: Thu Sep 15, 2011 11:51 am

Re: USB 3 device for hard disk

Post by userX »

TeraByte Support(TP) wrote:
> userX wrote:
> > When I mount a hard disk enclosure made with USB 3 capability, using IFL do
> > I need to include a device driver to realize the USB 3 speed?
>
> ...If it doesn't show that line, I'd suggest
> running 'dmesg | grep -i xhci' to see the kernel boot messages for that driver - see
> if there's any error messages there.

I ran the tests and there is not even a mention of "xhci" anywhere in the output of dmesg. I believe it does not correctly recognize the USB3 device. In the dmesg output I did see references to "ehci-pci", like this:

"new high-speed USB device number 2 using ehci-pci"

I am not sure whether that is supposed to be the USB3 device or something else.

I should mention that this device is a new USB3 HD enclosure, in which I have put an SSD hard disk. The device came with a USB3 Y-cable, both ends of which I had plugged into different USB ports. This enclosure's cable is plugged into a USB3 port on a USB3 dual port express card, which in turn is plugged into the express card port of the PC. When the machine is booted into Windows, the USB3 device is recognized and appears to realize USB3 speeds based on the test I ran on it. I can see the device in Windows Device Manager, etc.

I also tried another attempt at using it in IFL by plugging in a different USB3 HD device into the adapter, but once again the second hard disk was not even recognized. So, it would appear that this adapter is not playing nicely with Linux. I will need to solve that general problem with Linux compatibility before being able to use it in IFL environment. :cry:
TeraByte Support
Posts: 3629
Joined: Thu May 05, 2011 10:37 pm

Re: USB 3 device for hard disk

Post by TeraByte Support »

USB3 is standard (XHCI) so a single USB3 driver will work with all adapters,
sounds more like an issue with the "express card" port or device... what
type of express card port is on the PC and what is that connected to?


"userX" wrote in message news:5866@public.image...

TeraByte Support(TP) wrote:
> userX wrote:
> > When I mount a hard disk enclosure made with USB 3 capability, using IFL
> > do
> > I need to include a device driver to realize the USB 3 speed?
>
> ...If it doesn't show that line, I'd suggest
> running 'dmesg | grep -i xhci' to see the kernel boot messages for that
> driver - see
> if there's any error messages there.

I ran the tests and there is not even a mention of "xhci" anywhere in the
output of dmesg. I believe it does not correctly recognize the USB3 device.
In the dmesg output I did see references to "ehci-pci", like this:

"new high-speed USB device number 2 using ehci-pci"

I am not sure whether that is supposed to be the USB3 device or something
else.

I should mention that this device is a new USB3 HD enclosure, in which I
have put an SSD hard disk. The device came with a USB3 Y-cable, both ends of
which I had plugged into different USB ports. This enclosure's cable is
plugged into a USB3 port on a USB3 dual port express card, which in turn is
plugged into the express card port of the PC. When the machine is booted
into Windows, the USB3 device is recognized and appears to realize USB3
speeds based on the test I ran on it. I can see the device in Windows Device
Manager, etc.

I also tried another attempt at using it in IFL by plugging in a different
USB3 HD device into the adapter, but once again the second hard disk was not
even recognized. So, it would appear that this adapter is not playing nicely
with Linux. I will need to solve that general problem with Linux
compatibility before being able to use it in IFL environment.

![:cry:]({SMILIES_PATH}/icon_cry.gif)


userX
Posts: 119
Joined: Thu Sep 15, 2011 11:51 am

Re: USB 3 device for hard disk

Post by userX »

" ...what type of express card port is on the PC and what is that connected to?"

This is the device you asked about: http://www.startech.com/Cards-Adapters/ ... 3S22#dnlds

It is plugged into a standard express card port on the machine, and it is that device that I believe is causing the compatibility issue: "So, it would appear that this adapter is not playing nicely with Linux."
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