Installing a second hard drive in Bubba!

A collection of tips on howto tweak your Bubba.
Post Reply
Magnus
Posts: 51
Joined: 02 Jan 2007, 03:52
Location: Sweden
Contact:

Installing a second hard drive in Bubba!

Post by Magnus » 26 Jan 2007, 03:33

***WARNING!!! OPENING YOUR BUBBA MEANS YOUR GUARANTEE IS VOIDED***

The PSU delivered with Bubba does not have the correct specification for supplying enough power to both hard drives. You should have a PSU with the following spec: 12V DC, 4A, centre pin positive. A failed PSU will not be replaced if an additional hard drive has been mounted.


If you have soldering skills and are bored with only one hard drive you might want to try this!
The disk is not actually mounted in Bubba, it is outside Bubba :)

The two hard drives should be strapped as �cable select�. After hw installation, log in as root and mount the hard drive.

1. Open your Bubba and solder a extra 2*20 pin header to the PCB.
1.jpg
1.jpg (100.19 KiB) Viewed 30484 times
2.jpg
2.jpg (77.35 KiB) Viewed 30484 times
2. Solder a hard drive power cord to the PCB, as shown in picture.
3.jpg
3.jpg (83.22 KiB) Viewed 30484 times
3. Attach a IDE cable to the new connector on Bubba as shown in picture.
4.jpg
4.jpg (86.08 KiB) Viewed 30484 times
4. Connect the IDE cable and the power cord to the new hard drive.
5.jpg
5.jpg (98.84 KiB) Viewed 30484 times
6.jpg
6.jpg (86.13 KiB) Viewed 30484 times
5. Final result!
7.jpg
7.jpg (57.64 KiB) Viewed 30484 times
Remember not to try this if you are the least unsure of what you are doing!!!

Enjoy!
/Magnus
Last edited by carl on 05 Jul 2009, 10:15, edited 2 times in total.
Reason: attachement fix
Magnus, Excito developer
www.excito.com
support@excito.com

msx
Posts: 106
Joined: 13 Jan 2007, 06:03
Location: Venice
Contact:

Post by msx » 26 Jan 2007, 04:27

cool, great hack!

i got the 500GB version so i don't think i'll need a second HD for some time, but in the future, who knows :)
BTW, did you find some informations about the board inside the bubba? maybe there's some other useful stuff like serial or i2c ports..

Magnus
Posts: 51
Joined: 02 Jan 2007, 03:52
Location: Sweden
Contact:

Post by Magnus » 26 Jan 2007, 11:21

There is a way to connect a serial port to the PCB, but you need a few external components as well. We will post a description of that in a near future!

BR
Magnus
Magnus, Excito developer
www.excito.com
support@excito.com

John W
Posts: 62
Joined: 17 Jan 2007, 11:47

Post by John W » 26 Jan 2007, 19:49

Nicely done Magnus. Thumbs up. 8)

raven
Posts: 4
Joined: 28 Jan 2007, 17:28

Post by raven » 30 Jan 2007, 07:32

Could this be a way to achieve RAID capability?
True, it would have to be a software/driver based RAID (I've had som bad experiences of those, as compared to dedicated RAID cards), but its maybe better than nothing...

Magnus
Posts: 51
Joined: 02 Jan 2007, 03:52
Location: Sweden
Contact:

Post by Magnus » 31 Jan 2007, 05:56

raven wrote:Could this be a way to achieve RAID capability?
True, it would have to be a software/driver based RAID (I've had som bad experiences of those, as compared to dedicated RAID cards), but its maybe better than nothing...
Yes you can use software based RAID. It would probably be very slow...

/Magnus
Magnus, Excito developer
www.excito.com
support@excito.com

dengamle
Posts: 19
Joined: 05 Jan 2007, 20:14

Post by dengamle » 09 Feb 2007, 13:02

very cool hack :D

Nöbbe
Posts: 13
Joined: 19 Feb 2007, 06:22
Location: Lund, Sweden
Contact:

Post by Nöbbe » 10 Oct 2007, 05:15

Can you connect two harddrives on the IDE-cable? Or is there only support for one disk..

pa
Posts: 308
Joined: 06 Dec 2006, 04:38
Location: Sweden
Contact:

Post by pa » 11 Oct 2007, 02:18

You can use two drives on the same cable.

/PA

Nöbbe
Posts: 13
Joined: 19 Feb 2007, 06:22
Location: Lund, Sweden
Contact:

Post by Nöbbe » 12 Oct 2007, 08:57

Would the internal 12V->5V converter manage 3 disks? What are the ratings of the internal converter?

johannes
Posts: 1470
Joined: 31 Dec 2006, 07:12
Location: Sweden
Contact:

Post by johannes » 13 Oct 2007, 06:55

The 12 -> 5V converter is designed for 5V, 1.6A, whereof:

650 mA HDD
300 mA CPU, memory and other electronics
500 mA USB host
150 mA spare
===
1600 mA

Disks (Seagate barracudas) are specified at 638 mA @ 5V maximum, but our estimations are that they never should exceed 500 mA at 5V in our application.

Thus, if you don't use the USB host for anything using it's power, you should probably be OK with three disks. There is margins in all the calculations above. If you try, we recommend you measuring the 5V to check for dips, and keep an eye on the temperatures of LM2676 (the 5V switcher) and it's inductance (cylindrical, next to the USB host connector on the bottom side). If they burn your finger when you touch, they are probably too hot.
/Johannes (Excito co-founder a long time ago, but now I'm just Johannes)

gb
Posts: 6
Joined: 25 Oct 2007, 16:29

raid using laptop disks

Post by gb » 28 Oct 2007, 11:59

I just set up a RAID-1 array on the bubba, it seem to work, just a bit slow...

I gave up on trying to install a "full" raid system, including the root partition, and instead only added a third mirrored partition mounted as /home. Full instructions can be found here.

Image

hope it helps...

giovanni

msx
Posts: 106
Joined: 13 Jan 2007, 06:03
Location: Venice
Contact:

Post by msx » 11 Sep 2008, 09:38

hello :P it looks like passing to the new sites some picture directories went lost.. can it be ripristinated? :)

Magnus
Posts: 51
Joined: 02 Jan 2007, 03:52
Location: Sweden
Contact:

Post by Magnus » 11 Sep 2008, 13:53

Everything restored :)
Magnus, Excito developer
www.excito.com
support@excito.com

Post Reply