NAS Hard Drive Additions

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phoneline

Reputable
Nov 13, 2014
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Hi all,

I have purchased a QNAP TS-451 NAS with 4 bays. Initially I am going to run it with 2, 4TB drives in a Raid 1 config so the data is mirrored.

My question is, going forward can I just buy another 2, 4TB drives and add them into the NAS and they will just become part of the array?

I wasn't sure if it was that simple, or if I'll be looking at a bigger task to upgrade the NAS to 4 drives down the line?

Appreciate any info.
 
Solution
SuperSoph_WD
Hey there, phoneline!

RAID 1 is the mirror array, which means that if you add more drives the configuration the capacity won't increase.
No matter how many drives you add to RAID 1, the size never increases. What you increase is how many drives can fail and how good your read performance is.
If you plan to expand the storage, keep in mind that the 4 drives should be identical.
Once you have the 4 HDDs you can just backup your RAID 1 somewhere else and rebuild it into RAID 10 for example. It's one of the best RAID configs IMO. RAID 10 is also called a stripe of mirrors. You get excellent redundancy (as blocks are mirrored) and excellent performance (as blocks are striped).
I personally think this would be the best solution in your...
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SuperSoph_WD

SuperSoph_WD

Glorious
Jul 30, 2014
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Hey there, phoneline!

RAID 1 is the mirror array, which means that if you add more drives the configuration the capacity won't increase.
No matter how many drives you add to RAID 1, the size never increases. What you increase is how many drives can fail and how good your read performance is.
If you plan to expand the storage, keep in mind that the 4 drives should be identical.
Once you have the 4 HDDs you can just backup your RAID 1 somewhere else and rebuild it into RAID 10 for example. It's one of the best RAID configs IMO. RAID 10 is also called a stripe of mirrors. You get excellent redundancy (as blocks are mirrored) and excellent performance (as blocks are striped).
I personally think this would be the best solution in your case. :)

Hope this helps you!
SuperSoph_WD
 
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