I am interested in purchasing a NAS array as a home server, and I am looking at currently 4x2TB drives in a 4-bay Netgear ReadyNAS array.

I understand that RAID is not a backup and am will be backing up to other locations, however the current NAS that I have contains only one internal hard drive and I was looking to get one with more capacity and redundancy (so in case one of the drives fails I don't have to restore everything from backups and it is more reliable than just having 1 drive, etc).

Is there a recommended RAID mode for a small 4-bay NAS? I was looking into RAID 5 because I wanted to have more storage for a cheaper price than using RAID 1 and having to purchase double the capacity. Is this an okay solution? Or is there another mode for this scenario considered better?

  • RAID 5 is ok for this purpose. Just make sure you know about failed drives - e.g. feel free to test that you receive an email when you pull out some drive.
    – Yarik Dot
    Dec 21, 2015 at 23:31

2 Answers 2


RAID-5 is a good candidate for this purpose, given that you care more about capacity than read performance. RAID-10 gives better read performance ( especially sequential, read only ) but at the expense of more capacity and sequential write performance. Personally I run a 3 drive array on my desktop, and so for the OS partition, the performance is more important to me than storage, and so I divide the array into a partition for the OS using RAID-10, and the rest allocated to a RAID-5 array to hold bulk media data, where I care less about performance and more about storage efficiency.


RAID-5 is the cheapest, but worst type of RAID. It sounds like a reasonable choice for your purpose here, as it gives you maximum amount of usable disk space. RAId-10 would give higher performance and reliability, but at the cost of "wasting"2 of your 4 disks for redundancy, instead of just one. If this is just for a home NAS for media files etc, I think I would go for the cheap RAID-5 option.

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.