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Computer Forensics World :: View topic - SCSI Problem
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SCSI Problem

 
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ThatGuy
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Joined: Jun 27, 2008
Posts: 4

PostPosted: Thu Jul 31, 2008 1:49 am    Post subject: SCSI Problem Reply with quote

Hello everyone,
I have a situation in which I have a external SCSI drive bay with three tape drive and a SCSI to USB adapter, so the whole thing is running off of USB. My problem is that I am working on one tape drive in the bunch and the other two are not doing anything. The process is taking more time then I expected and had some question.
First, would it be possible to work on another tape drive in the bunch without compromising the forensic integrity of the drive I am currently working on (I am creating an image of the first tape drive and need forensic soundness). I am worried about the possibility of possible cross contamination in the information going across the USB cable (remember it is three tape drives in one box all going to the computer across one SCSI to USB adapter cable).
Second, is it possible to open the box and remove one of the other drives while still maintaining power to the other two drives with out causing any damage to the tape drives, SCSI box, computer, or forensic imaging of the first drive.
Thank you in advanced for any help you may be able to provide.
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PreferredUser
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PostPosted: Thu Jul 31, 2008 3:28 am    Post subject: Re: SCSI Problem Reply with quote

Let me throw out a couple of thoughts, you say you are concerned about forensic soundness yet you are using a SCSI to USB adapter. Do you know that the adapter is forensically sound? Is the transfer rate through the adapter just slow?

ThatGuy wrote:
First, would it be possible to work on another tape drive in the bunch without compromising the forensic integrity of the drive I am currently working on
If all data is going through your write-block then you maintain the integrity you have. However if your transfer rates are already slow, adding additional traffic will just slow the process that much more.

ThatGuy wrote:
Second, is it possible to open the box and remove one of the other drives while still maintaining power to the other two drives with out causing any damage to the tape drives, SCSI box, computer, or forensic imaging of the first drive.
It depends on the box. Does it support hot swap? If not removing the drive could cause all sorts of issues including SCSI termination errors, power supply issues and who know what else.
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