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The Graveyard - Products No Longer Supported => D-Link Storage => DNS-323 => Topic started by: dcteague on December 16, 2009, 09:10:44 AM

Title: RAID 1 changes with data on discs
Post by: dcteague on December 16, 2009, 09:10:44 AM
I have a 323 that's been configured for a while now with a significant amount of data loaded.  The current configuration is Raid 1 but I just found that during my initial configuration, I did not enable automatic rebuilding. 

My question is - if I select automatic rebuilding now and save the setting, will it over write anything?  When I started to save my settings, I received a warning that indicated saving my changes could result in lost data.

If I will lose the data, how can I correct this?  Would it be better to pull one of the drives, insert a new one into the 2nd position, and then make the change so that it creates a new mirror at the same time?  I'm a bit of a newb when this system so any guidance is appreciated.
Title: Re: RAID 1 changes with data on discs
Post by: gunrunnerjohn on December 16, 2009, 12:06:49 PM
If the RAID-1 array is working normally, selecting automatic rebuilding will just set the option, it won't do anything until you have a sync issue with one of the drives.
Title: Re: RAID 1 changes with data on discs
Post by: fordem on December 16, 2009, 12:50:17 PM
First - looking at your questions - I get the impression you may not have a backup, if that's correct, then let's start with that - RAID1 is not a backup, so you first step should be to create a backup plan and then back up the data regularly.

Now - automatic rebuild - I'm inclined to say it doesn't do what you think it does, and it makes no difference if it's enabled or not.  the theory is that enabling automatic rebuild will allow a failed drive to be automatically rebuilt - in my experience it doesn't - if you simulate a drive failure by removing a drive and then inserting a new drive, the unit still prompts you to format the new drive, it does NOT automatically rebuild.