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 Post subject: DDI 4 USB - WD drives - Help
PostPosted: April 23rd, 2013, 13:50 
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Hi all,

In the last few weeks I've had 4 WD drives (Elements) in for recovery, 500GBs or 1TBs, USB 2 and 3. Having the same issue with all, they will come ready and ID. Apart from having a few bad areas, they image horribly slowly on DDI 4 USB add on.

PIO with a small block size, any and all settings, and it will read for half a second, then pause for about 2 seconds, read for half a second, then pause for 2 seconds etc. This reads about 3,000 LBAs at a time and will take ages to finish.

Done solve slow responding fix on PC3K with no effect. Apart from migrating to a SATA PCB can you offer any advice please?

Thanks in advance.

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 Post subject: Re: DDI 4 USB - WD drives - Help
PostPosted: April 23rd, 2013, 13:54 
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Joined: June 8th, 2006, 19:44
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What's wrong with migrating to a SATA PCB?

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 Post subject: Re: DDI 4 USB - WD drives - Help
PostPosted: April 23rd, 2013, 14:04 
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Joined: February 9th, 2009, 16:13
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Try [ctrl]+[n] and check "Initialize Read" and see if that helps.

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 Post subject: Re: DDI 4 USB - WD drives - Help
PostPosted: April 23rd, 2013, 14:04 
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Joined: November 29th, 2006, 10:08
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To be honest, we have resorted back to SATA conversion due to similar problems with imaging via USB.

Although the DDI add-on copes well with most drives, it does not do so well once a head exchange has been done.

It's easy enough and takes 10 minutes to convert to SATA :-)

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 Post subject: Re: DDI 4 USB - WD drives - Help
PostPosted: April 24th, 2013, 4:41 
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I was hoping there was some tweaking that could be done in order to get these (WD) to read better in their native state. Samsung USBs seem to image really well, almost like a SATA, but these WDs don't play nice.

Luke, I tried that option, but it didn't help. Thanks for suggestion though.

Will move them over to SATA, thanks for the input.

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 Post subject: Re: DDI 4 USB - WD drives - Help
PostPosted: April 24th, 2013, 8:36 
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Are you sure those WD drives are not suffering from the "slow issue" (relo list) problem ?

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 Post subject: Re: DDI 4 USB - WD drives - Help
PostPosted: April 24th, 2013, 8:47 
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Seems to be similar to my case:
viewtopic.php?t=25749&f=1&start=0#p174537

In my case was a head faulty, which happened after a power surge.

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 Post subject: Re: DDI 4 USB - WD drives - Help
PostPosted: April 25th, 2013, 5:33 
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Spildit wrote:
Are you sure those WD drives are not suffering from the "slow issue" (relo list) problem ?


Ran that fix on PC3K didn't help at all.

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 Post subject: Re: DDI 4 USB - WD drives - Help
PostPosted: April 25th, 2013, 13:11 
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Nick_CT wrote:
Spildit wrote:
Are you sure those WD drives are not suffering from the "slow issue" (relo list) problem ?


Ran that fix on PC3K didn't help at all.


Ok. So it's "another thing" .
Hope that you manage to fix it.

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 Post subject: Re: DDI 4 USB - WD drives - Help
PostPosted: April 25th, 2013, 13:13 
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Didn't have stock of compatible SATA PCB, have ordered, will see how it images when on SATA when PCB gets here.

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 Post subject: Re: DDI 4 USB - WD drives - Help
PostPosted: April 25th, 2013, 13:26 
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Yes, and i think hot swap might help too, if it's possible to do so on that drive.

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