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Author Topic: DNS-323 RAID 1 question  (Read 8318 times)

perfectdark

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DNS-323 RAID 1 question
« on: December 03, 2009, 10:00:42 AM »

 Hi all

I have a 1 TB drive and here is my question. Later on i want to buy 2 2TB drives and set them up as RAID 1 or buy another 1 TB drive and use RAID 1. Right now i have 1 TB drive as standard. When i decide to upgrade can i just drag allmy filesfrom my mappednas drive on my pc to a usb drive connected to my pc? Or do i need to run linux to get the data?
Or is there a way to upgradeto Raid1 without formating?
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fordem

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Re: DNS-323 RAID 1 question
« Reply #1 on: December 03, 2009, 12:26:29 PM »

First - you need to backup your data - RAID1 or a single drive you need to back your data.

Next - if you have a single 1TB drive and wish to add a second 1TB drive and create a RAID1 array, you can do so by installing the new drive and powering the system on, when you log into the web interface it will prompt you to format the drive - there will be a check box that you can tick to create a RAID1 array and the system will format the drive and then sync the data.

If you're going to create a RAID1 array with 2 2TB drives, you need to remove the existing 1TB drive, install both 2TB drives and format as a RAID1 array and then restore your data from the back up.
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RAID1 is for disk redundancy - NOT data backup - don't confuse the two.

perfectdark

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Re: DNS-323 RAID 1 question
« Reply #2 on: December 03, 2009, 01:03:16 PM »

First - you need to backup your data - RAID1 or a single drive you need to back your data.



thanks for the reply

I'm a little confused, why would i need to backup my data for RAID 1?I thought the whole purpose of RAID 1 is that its mirroring to the other drive, thus that is your backup, or am i wrong
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Chill

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Re: DNS-323 RAID 1 question
« Reply #3 on: December 03, 2009, 03:03:27 PM »

I thought the whole purpose of RAID 1 is that its mirroring to the other drive, thus that is your backup, or am i wrong

The purpose of RAID is for redundancy - NOT backup

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gunrunnerjohn

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Re: DNS-323 RAID 1 question
« Reply #4 on: December 03, 2009, 06:11:09 PM »

RAID of any level is not backup.  If you mistakenly delete a folder tree, it's gone from both of your RAID-1 copies in a flash.  Backup is something that you aren't manipulating on a daily basis.
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Microsoft MVP - Windows Desktop Experience
Remember: Data you don't have two copies of is data you don't care about!
PS: RAID of any level is NOT a second copy.

fordem

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Re: DNS-323 RAID 1 question
« Reply #5 on: December 03, 2009, 07:45:56 PM »

Yes, RAID1 mirrors to the other drive - but this is not a backup, it protects against loss of data in the event of a disk failure BUT NOTHING MORE.

You can also lose data through deletion of files, whether accidental or deliberate, corruption due to a virus, failure of the NAS itself, etc..
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RAID1 is for disk redundancy - NOT data backup - don't confuse the two.

perfectdark

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Re: DNS-323 RAID 1 question
« Reply #6 on: December 07, 2009, 11:10:00 AM »

ok (poor choice of workds "backup" ) but you have opened my eyes.  I thought RAID 1 was the best solution, in case my drive failed i wouldn't lose my pictures/home videos (could really care less about dvd/bluray backups being lost) But now i'm wondering if itseven worth buying another 1tb drive and using as raid 1, or if i should just buy a 1tb drive and use JBOD (2tb capacity) I could always buy an external usb drive to backup my documents/pictures/home videos

what do yuo gents reccomend
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gunrunnerjohn

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Re: DNS-323 RAID 1 question
« Reply #7 on: December 07, 2009, 11:20:13 AM »

Actually, RAID is more secure than the other configurations, but only because it guards against data loss from a hardware failure.

I have multiple layers of backup.  I have no fewer than four copies of anything I really want to keep, and several of the copies are buried in my basement in a cinder-block enclosure with some NAS units.
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Microsoft MVP - Windows Desktop Experience
Remember: Data you don't have two copies of is data you don't care about!
PS: RAID of any level is NOT a second copy.

perfectdark

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Re: DNS-323 RAID 1 question
« Reply #8 on: December 08, 2009, 11:03:02 AM »

So i guessin essence i don't really need a RAID 1 configuration
I may be better off going with standard and have 2 hard drives both with 1TB capacity (totaling 2B's) to store all my movies on. And for my more crucial data (home videos / photos / doucments) save them on each of the hard drives and on my PC hard drive as well (3 places) Does this saound like the best method?
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gunrunnerjohn

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Re: DNS-323 RAID 1 question
« Reply #9 on: December 08, 2009, 01:45:32 PM »

Sure sounds better than one copy! :D
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Microsoft MVP - Windows Desktop Experience
Remember: Data you don't have two copies of is data you don't care about!
PS: RAID of any level is NOT a second copy.