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Using USB HUB

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James Tanner

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Using USB HUB
« on: 21 Mar 2011, 06:25 pm »
Hi Folks,

We have tested the powered D-LINK DUB-H4 4-Port USB 2.0 Hub with the BDP-1 and it works great.



So if you want to have more USB Drives connected (especially the 2.5 inch very large 1.5 and 2TB units that use a lot of power) then this powered USB Hub is a good solution for adding more drives to the BDP-1.

james
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konut

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Re: Using USB HUB
« Reply #1 on: 21 Mar 2011, 06:43 pm »
Would it be possible to use a non-powered USB hub with multiple USB flash drives? Could this work with the non-powered USB input(s)?
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James Tanner

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Re: Using USB HUB
« Reply #2 on: 21 Mar 2011, 06:55 pm »
Quote from: konut on 21 Mar 2011, 06:43 pm
Would it be possible to use a non-powered USB hub with multiple USB flash drives? Could this work with the non-powered USB input(s)?

Hi konut,

The idea with the powered Hub is it prevents multiple USB drives from being underpowered. Multiple 2.5 inch large capacity TB USB-powered drives could tax the USB ports in the BDP-1 and limit current to the drive.

Without testing I can not be absolutely sure but as long as the attached USB thumb-drives do not exceed the power available from the BDP-1 USB outlets you should be OK using a non-powered USB Hub.

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skunark

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Re: Using USB HUB
« Reply #3 on: 21 Mar 2011, 07:16 pm »
Not all bus powered drives will even work the the BDP-1.   

James,

So what is the maximum current requirement per USB port?   500mA at 5V?     I have a g-tech drive that needs 5.5 Watts to power on, then it's below 2 watts when it's running which doesn't work with the BDP-1.

I believe this is missing from the BDP specifications. 

Thanks,

Jim 
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James Tanner

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Re: Using USB HUB
« Reply #4 on: 21 Mar 2011, 07:34 pm »
Quote from: skunark on 21 Mar 2011, 07:16 pm
Not all bus powered drives will even work the the BDP-1.   

James,

So what is the maximum current requirement per USB port?   500mA at 5V?     I have a g-tech drive that needs 5.5 Watts to power on, then it's below 2 watts when it's running which doesn't work with the BDP-1.

I believe this is missing from the BDP specifications. 

Thanks,

Jim

Hi Jim,

The USB spec only allows for 500mA maximum from a USB2 bus powered port - which is not our spec so is not on the BDP-1 spec sheet - maybe we should? You're drive from the spec seems to require more than double that?

The BDP-1 has 500mA available at the back bottom USB bus powered port and the top back USB shares with the front 2 USB for a total of another 500mA as well.

james
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skunark

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Re: Using USB HUB
« Reply #5 on: 21 Mar 2011, 08:39 pm »
Thanks James,

That's good to know, but as you are aware that my drive is twice out of spec so I will stick with the western digital drive for now.   The 500mA usb requirement is just the minimum spec for 2.0, the port could have been designed to provide more.  I will just have to wait for a HDD enclosure from Bryston that has a good power supply or stick with what i have now :)
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Alpha10

Re: Using USB HUB
« Reply #6 on: 22 Mar 2011, 11:13 am »
Quote from: skunark on 21 Mar 2011, 08:39 pm
Thanks James,

That's good to know, but as you are aware that my drive is twice out of spec so I will stick with the western digital drive for now.   The 500mA usb requirement is just the minimum spec for 2.0, the port could have been designed to provide more.  I will just have to wait for a HDD enclosure from Bryston that has a good power supply or stick with what i have now :)

James, on the subject of the Bryston HDD, do you have any update on features, availability and most import price?

It is just there is a fair amount of speculation over on this side of the pond....

Cheers
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James Tanner

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Re: Using USB HUB
« Reply #7 on: 22 Mar 2011, 12:05 pm »
Quote from: Alpha10 on 22 Mar 2011, 11:13 am
James, on the subject of the Bryston HDD, do you have any update on features, availability and most import price?

It is just there is a fair amount of speculation over on this side of the pond....

Cheers

Hi Alpha,

Still looking at it and it appears to come down to 2 approaches.  A NAS setup where you can place the storage at your router or with your BDP-1 - using two 2TB HHD drives mirrored - pricing is an issue. 

I am also thinking maybe we could do a dedicated USB drive case that would match the BDP-1 cosmetics and just allow customers to use their own USB drives - maybe even include a USB powered HUB in the box?

james
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terrycym

Re: Using USB HUB
« Reply #8 on: 22 Mar 2011, 12:50 pm »
Quote from: James Tanner on 22 Mar 2011, 12:05 pm
Still looking at it and it appears to come down to 2 approaches.  A NAS setup where you can place the storage at your router or with your BDP-1 - using two 2TB HHD drives mirrored - pricing is an issue. 

I am also thinking maybe we could do a dedicated USB drive case that would match the BDP-1 cosmetics and just allow customers to use their own USB drives - maybe even include a USB powered HUB in the box?

james
Presume you don't mean USB drives but rather bare SATA drives?
Why don't you guys talk to a RAID array specialist and come up with a joint solution (Drobo for example)?
Not sure why you would need the powered USB hub in there?
It would add to the cost and besides, you will still have 3 left on the BDP-1
There again, if you're looking to fill all that empty panel space on the Bryston HDD...
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Alpha10

Re: Using USB HUB
« Reply #9 on: 22 Mar 2011, 01:03 pm »
Quote from: terrycym on 22 Mar 2011, 12:50 pm
Presume you don't mean USB drives but rather bare SATA drives?
Why don't you guys talk to a RAID array specialist and come up with a joint solution (Drobo for example)?
Not sure why you would need the powered USB hub in there?
It would add to the cost and besides, you will still have 3 left on the BDP-1
There again, if you're looking to fill all that empty panel space on the Bryston HDD...

That is weird Terrycym, answering you on two differnt boards at the same time!


I think there are two possible routes and they are; making the case available and including a powered USB hub, such that the consumer can add whatever drives they like OR you make a case available with a good power suppply and a SATA drive card, but would then require a USB out as well to interface withth BDP?

I agree with James that I do not think Bryston should go down the NAS route on cost grounds alone.

For me all I want is a matching Bryston case in which to put/have some drives so I have a cosmetic match and not have cables etc hangin off the back of the BDP.

Cheers
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skunark

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Re: Using USB HUB
« Reply #10 on: 22 Mar 2011, 07:11 pm »
I was kinda joking about the bryston HDD chassis, but would love to see one and if you are taking ideas for a wishlist.. well :)

I would love to see chassis that can take 4 HDD (either 2.5" or 3.5") in a front slot mountable design, with a good power supply and reasonable sata-to-usb chipset.  It would be useful if the BDP could format this enclosure with EXT3/4 instead fat32 or ntfs for fragmentation reasons.  Also the flexibly striping or using raid0 on two or more drives would be a bonus, but i'm okay with 4 drives. 

I don't agree with the need to mirror the HDD since this is a playback device and is already a copy of what I have on my computer.   If the BDP was able to rip CDs, then maybe mirror would be useful for those without a computer, but i've stated before mirror is not a backup, but just a way to improve reliability of the device.
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James Tanner

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Re: Using USB HUB
« Reply #11 on: 23 Mar 2011, 02:55 pm »
Hi Folks,

Mike at Bryston uses this with his BDP-1.  If you want to use very large drives (1TB and larger) with your BDP-1 this may be just the ticket. :thumb:

http://www.tigerdirect.ca/applications/SearchTools/item-details.asp?EdpNo=3516746&CatId=2785

james
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skunark

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Re: Using USB HUB
« Reply #12 on: 23 Mar 2011, 03:34 pm »
Quote from: James Tanner on 23 Mar 2011, 02:55 pm
Hi Folks,

Mike at Bryston uses this with his BDP-1.  If you want to use very large drives (1TB and larger) with your BDP-1 this may be just the ticket. :thumb:

http://www.tigerdirect.ca/applications/SearchTools/item-details.asp?EdpNo=3516746&CatId=2785

james
I use one to recover files from lacie external drives when the power supply dies on them.  I guess you could use it like a big thing drive :)
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James Tanner

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Re: Using USB HUB
« Reply #13 on: 27 Mar 2011, 04:24 pm »
Hi Folks,

Picked up the Thermaltake BLACX Doc as mentioned in the link above.



Purchased a 1TB Deskstar Hitachi 3.5 inch SATA drive and a WD Scorpio Blue 500GB 2.5 inch SATA drive. Formatted them both using the FAT32 tool mentioned in the other thread and it works and sounds great on the BDP-1 :thumb:

james
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skunark

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Re: Using USB HUB
« Reply #14 on: 27 Mar 2011, 04:31 pm »
You know have the biggest thumb drive possible for the BDP. :)    Make note of how you can slide the HDD in, it would be very convenient for the BDP-SSD or BDP-HDD enclosure  :thumb:
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James Tanner

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Re: Using USB HUB
« Reply #15 on: 27 Mar 2011, 04:36 pm »
Quote from: skunark on 27 Mar 2011, 04:31 pm
You know have the biggest thumb drive possible for the BDP. :)    Make note of how you can slide the HDD in, it would be very convenient for the BDP-SSD or BDP-HDD enclosure  :thumb:

Yes I am thinking along the same lines :thumb:

James
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Alpha10

Re: Using USB HUB
« Reply #16 on: 27 Mar 2011, 06:14 pm »
Quote from: James Tanner on 27 Mar 2011, 04:36 pm
Yes I am thinking along the same lines :thumb:

James

I really like the idea of you providing an empty enclosure which we can then put in whatever drives we want and then grow as necessary. So maybe we can then swap out as SSD drives get cheaper and that sort of thing  :inlove:
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James Tanner

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Re: Using USB HUB
« Reply #17 on: 27 Mar 2011, 06:57 pm »
Quote from: Alpha10 on 27 Mar 2011, 06:14 pm
I really like the idea of you providing an empty enclosure which we can then put in whatever drives we want and then grow as necessary. So maybe we can then swap out as SSD drives get cheaper and that sort of thing  :inlove:

Hi Alpha

Yes I am working on some ideas where the powered enclosure would take 4 plugin SATA drives on the rear and an internal power supply and USB Hub.

James
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terrycym

Re: Using USB HUB
« Reply #18 on: 27 Mar 2011, 07:33 pm »
Quote from: James Tanner on 27 Mar 2011, 06:57 pm
Hi Alpha

Yes I am working on some ideas where the powered enclosure would take 4 plugin SATA drives on the rear
James
Are you talking about 4 external drives to the enclosure?
I which case, have you considered the eSATA interface?
(As in external SATA)
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James Tanner

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Re: Using USB HUB
« Reply #19 on: 27 Mar 2011, 07:38 pm »
Quote from: terrycym on 27 Mar 2011, 07:33 pm
Are you talking about 4 external drives to the enclosure?
I which case, have you considered the eSATA interface?
(As in external SATA)

No, internal - 4 plug-able SATA drives.

James
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