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Author Topic: Change RAID setting  (Read 4751 times)

dariawan

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Change RAID setting
« on: November 12, 2010, 08:02:46 AM »
Anybody can confirm if I can switch from raid-1 to 0/ linear and not losing the existing data? I have 2x1TB drives in my dns323, currently set to raid 1. I've used around 250gb already, and now I'm thinking to just have 500gb as raid 1 and the rest as linear, so I can have 1.5tb space in total.

thanks.
« Last Edit: November 12, 2010, 08:30:58 AM by dariawan »
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fordem

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Re: Change RAID setting
« Reply #1 on: November 12, 2010, 08:42:30 AM »
No - you can't - any changes to the disk configuration will require a reformat of the disks.

Also - you need to be aware that there is no performance advantage to running RAID0 on the DNS-323, and that configuration, along with JBOD, will double your risk of data loss.
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RAID1 is for disk redundancy - NOT data backup - don't confuse the two.

dariawan

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Re: Change RAID setting
« Reply #2 on: November 12, 2010, 05:17:11 PM »
I see, thanks for the info.

What if I replace one of the disk with a 2TB, will i be able to retain the data from one of the old 1TB without copying it to other media first?

thx.
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grixx

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Re: Change RAID setting
« Reply #3 on: November 13, 2010, 02:24:24 AM »
If you replace one of the two 1TB drives of a RAID1 with a 2TB drive I guess the NAS will offer you to rebuild the RAID1 leaving 1TB of the new drive unused. Probably you can use the free space as an additional single volume.

But if you want to migrate from a RAID configuration to single volumes in the DNS-323 you have to copy the data elsewhere before. This might be tolerable with your 250GB via the network. Given that you know how to telnet/ssh into the NAS and know what you are doing it is possible to connect an external USB drive directly to the NAS and copy or rsync the data directly from the NAS' drive onto the USB drive and back after reconfiguring and reformatting.

grixx
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dariawan

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Re: Change RAID setting
« Reply #4 on: November 13, 2010, 02:17:02 PM »
Yeah, I'm thinking to keep 1tb on raid1 and use the rest as single if i get another 2tb drive, so that'll work fine then. thanks for the info.
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