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Windows 7: Can Bitlocker be used to encrypt mirrored disks in a RAID 1 volume?

10 Jan 2011   #1
motch6

Win 7 Ult x64
 
 
Can Bitlocker be used to encrypt mirrored disks in a RAID 1 volume?

Can Bitlocker be used to encrypt mirrored disks in a RAID 1 volume?

If so, What happens when one drive fails?
Will I be able to read the other drive?

On another note, would I be able to take that 2nd drive from this computer and put it into another computer and get the files? (assuming I have the password)

Thanks for any help on this issue.


My System SpecsSystem Spec
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11 Jan 2011   #2
motch6

Win 7 Ult x64
 
 
Bitlocker and RAID

Joules, Unfortunately that thread is what I've been posting at since July and unfortunately no one has come up with a good answer.

Was hoping someone here would.

Thanks.
My System SpecsSystem Spec
13 Jan 2011   #3
jav

Windows 7 Ultimate x86 SP1
 
 

Hello motch6. welcome to the forums.

According to TechNet library (http://technet.microsoft.com/en-us/l...(WS.10).aspx):

Quote:
What type of disk configurations are supported by BitLocker?
In Windows Server 2008 R2, Windows Server 2008, and Windows 7, any number of internal, fixed data drives can be protected with BitLocker. ATA and SATA-based, direct-attached storage devices are also supported. The following table details which disk configurations are supported and not supported by BitLocker.
-capture.png

So as you can see from the picture.
It says That Hardware-based RAID systems are Supported

However Software-based RAID systems are Not Supported.

One can also notice in the Microsoft KB Description of the BitLocker Drive Preparation Tool
Under system requirements for BitLocker Drive Preparation Tool it mentions
Quote:
The partition is not using software spanning, software mirroring, or software RAID.
Which basically shows again that it can not work under software RAID


I hope it answers your question.


My System SpecsSystem Spec
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13 Jan 2011   #4
motch6

Win 7 Ult x64
 
 

That helps, but I need to know what happens if a drive fails?

Is it Bit-locking both drives?
Is it simple to just supply a new drive to RAID configuration?

On another note:
If I need to pull one of those drives because of computer hardware failure will I be able to plug it into another computer and access the data?

Thanks.
My System SpecsSystem Spec
12 Dec 2011   #5
Zoik

Windows 7 Ultimate
 
 

I know this is an old post but did you ever find an answer to the what happens if a drive fails? I'm currently in the middle of a raid encryption and never thought of that. I guess I just assumed it would encrypt both. But if one does die that does bring the question of replacing the dead.. Would you have to decrypt the old? or will the encryption copy itself to the new drive? Also I know if you transfer a USB stick with Bitlocker installed you can access it on a different PC even if that PC doesn't have Bitlocker.. I tested it on windows 7 anyway. It is still encrypted but will ask you for the password just like it does on your own PC. But im not sure about internal drives.
My System SpecsSystem Spec
12 Dec 2011   #6
logicearth

Windows 8.1 Pro (x64)
 
 

It shouldn't make a difference if a drive fails, RAID 1 is suppose to be a near carbon copy meaning as far as bitlocker is concern is the same data.
My System SpecsSystem Spec
13 Dec 2011   #7
motch6

Win 7 Ult x64
 
 

I'll chime in as well. Yes, if a Drive fails the RAID will rebuild it regardless of encryption. I was my concerned if the whole computer failed and you had to take the drives to a new computer that they might not work, but I have also learned that it should be possible just as you mentioned. It should ask for an ecryption key. ALTHOUGH, I have not tested this so I'm not 100% sure it would work.
My System SpecsSystem Spec
13 Dec 2011   #8
Zoik

Windows 7 Ultimate
 
 

Ahh ok. I guess my concern was, as I thought yours was, if one fails and you go to mirror the data to rebuild the raid would the encryption copy over quickly like the data would (well not quickly but faster than an encryption process) Or would the copying take another 12hrs (thats how long it took me to encrypt). I just dont understand how encryption works all that well is why Im asking. Like when I encrypted Raid setup.. Did it encrypt both drives, or just one?
My System SpecsSystem Spec
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 Can Bitlocker be used to encrypt mirrored disks in a RAID 1 volume?




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