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Windows 7: Raid 1 ?


21 Jul 2010   #1
24c

Win7 x64 Ult
 
 
Raid 1 ?

I want to set up 2 WD 640 GB spinners in a RAID 1 array for storage, my 1st attempt at a RAID 1 array. As I understand it, RAID 1 writes the same data to each HD, therefore creating 2 identical drives. 2X safety for files.

I am wondering:

1. could each drive be removed from the array and used separately?
2. if 1 fails, the other is still readable in the array?

My purpose for this is to have 2 copies of my files on separate drives for obvious safety reasons. I currently copy from one drive to another, not good if I forget to copy something and a drive fails.

ETA - title of post should be RAID 1 ?, not Raid i ?
I picked a heck of a month to give up coffee................

My System SpecsSystem Spec
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21 Jul 2010   #2

Windows 7 Ultimate
 
 

Quote   Quote: Originally Posted by 24c View Post

1. could each drive be removed from the array and used separately?
2. if 1 fails, the other is still readable in the array?
1. Absolutely
2. There wouldn't be much use of RAID 1 if it wouldn't be, eh?
My System SpecsSystem Spec
21 Jul 2010   #3
24c

Win7 x64 Ult
 
 

Quote   Quote: Originally Posted by Kirsch View Post
Quote   Quote: Originally Posted by 24c View Post

1. could each drive be removed from the array and used separately?
2. if 1 fails, the other is still readable in the array?
1. Absolutely
2. There wouldn't be much use of RAID 1 if it wouldn't be, eh?
Thanks, just checking. Sometimes I don't know what I think I know, and what I think I know is just plain wrong.
My System SpecsSystem Spec
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21 Jul 2010   #4

Windows 7 Ultimate x64
 
 

Keep in mind with RAID 1 that while you do have 2 copies of the data...in the event that you accidentally delete a file or get a virus and it corrupts a file that it's going to corrupt both copies of the file at the same time.

I prefer having data redundancy on an external hard drive that I can keep offsite. This way if somebody steals the computer or my house burns down...I don't lose my backup copy at the exact same time.
My System SpecsSystem Spec
21 Jul 2010   #5
24c

Win7 x64 Ult
 
 

@paprks1

I wanted to make the RAID 1 include 1 internal, 1 external drive, but I can't do that unless I get a real long SATA cable so I can connect the external drive to an internal SATA port. I think this correct anyway.

I do have an external drive case I'm using now, and after I get the RAID 1 set up, I may be able to copy to the external drive once a week or so for just such situations as you mentioned.
My System SpecsSystem Spec
21 Jul 2010   #6

Windows 7 Ultimate x64
 
 

Sure, just wanted to make it clear that RAID was not a substitute for backup. So many people forget that and are left with a bad taste in their mouth when they lose their data and thought they were protected.
My System SpecsSystem Spec
21 Jul 2010   #7

Windows 7 Ultimate
 
 

Quote   Quote: Originally Posted by pparks1 View Post
Sure, just wanted to make it clear that RAID was not a substitute for backup. So many people forget that and are left with a bad taste in their mouth when they lose their data and through they were protected.
Correct, and incorrect. I like your wording in your previous post.

It DOES backup against failed hard-drives (unless, obviously, both fail).

So.. RAID 1 can be considered a backup for faulty hardware.. how does that sound?
My System SpecsSystem Spec
21 Jul 2010   #8

Windows 7 Ultimate x64
 
 

Quote   Quote: Originally Posted by Kirsch View Post
Quote   Quote: Originally Posted by pparks1 View Post
Sure, just wanted to make it clear that RAID was not a substitute for backup. So many people forget that and are left with a bad taste in their mouth when they lose their data and through they were protected.
Correct, and incorrect. I like your wording in your previous post.

It DOES backup against failed hard-drives (unless, obviously, both fail).

So.. RAID 1 can be considered a backup for faulty hardware.. how does that sound?
RAID is never a backup....it's redundancy....they are 2 different things. For example, get a virus on your machine. Then try to use your "backup" drive from your RAID set to see if things are fine.

RAID 1 is really necessary when uptime is critical. Suffice it to say that nothing in my home "has" to be up and operational. I can suffer from some downtime if my server crashes and I have to reload the OS. However, I cannot recover very easily if I don't have a backup of my data.
My System SpecsSystem Spec
21 Jul 2010   #9

Windows 7 Ultimate
 
 

RAID 1 can be considered a backup against a faulty hard drive, that's all I am saying.
My System SpecsSystem Spec
21 Jul 2010   #10

Windows 7 Ultimate x64
 
 

Quote   Quote: Originally Posted by Kirsch View Post
RAID 1 can be considered a backup against a faulty hard drive, that's all I am saying.
RAID 1 can save you in the 1 and only 1 instance that a hard drive fails. That is true. As a server admin for a living, I never utilize the terms RAID and backup to be interchangeable in any way. They are very different concepts. While you do understand this...other's don't.
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 Raid 1 ?




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