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7 Posts

03-11-2016

australia

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  • Message 11 of 15

Re: Thinkpad P70 - Useless Passwords + Setting up SED

2016-03-13, 12:30 PM

winmagic  ie secure doc engages the SED. hardware encryption

 

all others like bitlocker are software based encryption and slow down  SSD.

 

Peter

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21 Posts

12-01-2007

Canada

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  • Message 12 of 15

Re: Thinkpad P70 - Useless Passwords + Setting up SED

2016-03-13, 14:38 PM

> all others like bitlocker are software based encryption

My understanding is that Bitlocker works in different modes depending on your hardware and software configuration. One mode is that it works just like TrueCrypt/VeraCrypt and performs full disk encryption via software encryption. But with an SED, and with appropriate (i.e. SecureBoot/UEFI-only/Opal-2 compliant/eDrive-compatible) hardware, I thought that Bitlocker worked much like Winmagic. And further, I understood that in that mode, then there was no slowdown because the decrypting of the drive data itself was done on the SED. That's just what I've read. Maybe I'm wrong?

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553 Posts

10-03-2011

Canada

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  • Message 13 of 15

Re: Thinkpad P70 - Useless Passwords + Setting up SED

2016-03-13, 15:07 PM

wrote:

all others like bitlocker are software based encryption and slow down  SSD.

Sure, and it does not help SSD de-duplication etc. The good question is by how much, and whether it matters. I have my 950 Pro in P70 encrypted with Bitlocker, and there is a bit of CPU load when copying tens of GBs to the trive. It's still several times faster than other SATA SSDs in the same laptop in sequential read/write, however there is hardly ANY practical difference. It's so fast in the apps I use, performance problems are elsewhere.
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7263 Posts

10-29-2009

United States of America

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  • Message 14 of 15

Re: Thinkpad P70 - Useless Passwords + Setting up SED

2016-03-15, 17:28 PM

OPAL drives are always encrypting.  The question is, how to protect the key that is used for this encryption.  There are 2 ways:

  1. Set a HDD password in BIOS Setup.  Then, the drive firmware does not release the key until the correct password is provided
  2. Use OPAL management software such as WinMagic SecureDoc.

Either method, the encryption is exactly the same.  The only difference is how the key is managed.

 

If you are worried that someone else knows the encryption key and you want to reset it, Lenovo has a tool to do this:

http://support.lenovo.com/us/en/downloads/ds019026

 

WARNING, it will wipe your disk.  But then you are starting over with a new encryption key if this is something that you are worried about.

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19 Posts

06-28-2016

Mexico

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  • Location: Mexico
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  • Message 15 of 15

Re: Thinkpad P70 - Useless Passwords + Setting up SED

2016-10-16, 1:55 AM

Hi

 

I acquired a second hand Sandisk X300s with SED Opal 2.0, installed on a T450 and enabled BIOS HDD protection.

Now I want to use that disk as external drive to reimage another laptop but even after clearing the password from the BIOS it does not work.

 

IS there a way to fix this?

 

Fixed

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