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[xpmps]

I have a question to the topic of RAID 1.
Currently I have a 325 with a single hard drive of 2TB. My intention is to mount yet another 3TB and make a RAID 1. When creating it, lose 2TB disk data?
Once you have the full 2TB hard drive I intend to remove it, save it and mount another 3TB. Format both drives and reassemble another RAID1
Is it possible? I explained?

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Tengo una duda con el tema del RAID 1.
En la actualidad tengo un 325 con un solo disco duro de 2TB. Mi intención es montar ahora otro de 3TB y hacer un RAID 1. A la hora de crearlo, perderé los datos del disco 2TB?
Una ves tenga el disco duro 2TB lleno mi intención es quitarlo, guardarlo y montar otro de 3TB. Formatear ambas unidades y volver a montar otro sistema RAID1
Es posible? Me he explicado?

[JavaLawyer]

If you follow your suggested procedure, the new 3TB drive you insert will format to 2TB to mirror the size of your existing drive (and I'm not sure if your data will be lost).

Here is the safest procedure:

(1a) If you have a Linux PC, then simply install the 2TB drive on your PC and you should be able to directly see your data

(1b) If you have a Windows PC, there is a freeware application called EXT2Explorer that will allow your Windows PC to mount and see the data on the Linux formatted (EXT) drive (DNS-325 formats drives using the Linux filesystem). You can place the 2TB drive in your PC or use an external USB drive enclosure.

(1c) If you have the capacity on your PC, you can copy all of your files over to your PC and copy them back again, although this will consume extra time.

(2) Place two 3TB drives in your DNS-325 and create a RAID 1 array

(3) Copy the data from your 2TB in your Windows PC / Linux PC to the DNS-325