Snology NAS

[Quinntun]

Good day, Im thinking of buying three identical synology nas for a project I'm doing. Two are going to be at home directly link together for fail-over mode and a third offsite being mirrored (so essentially all three going to be a backup of each other).

 

I cant decide if i should run in RAID 5 so i still can sustain a drive failure ( so essentially i need to lose two nas and 2 drives before any data lose occur) or just setup it up in raid 0 for maximum storage (where i would need to lose just 2 nas and 1 drive to lose data).

 

Any thoughts?

[SamWang8891TW]

First, it depends on how much you want to spend and how imortant the file is. You have THREE NAS DRIVE having same files, so I think it is pretty fine to set up RAID 0 on two drive and have RAID 5 on the third drive(the offsite one).

By the way, you have one more choice which is SHR (which just let the machine decide which is the best for you). 

If you want to calulate the stoge sizes between different RAID mode and SHR mode, go to 

https://www.synology.com/en-global/support/RAID_calculator

[Kilrah]

My data is on 3 RAID0 sets one of them being offsite and I'm happy with that.

[Quinntun]

Ok thanks, Ya i've been thinking since i have the three nas if the raid5 would have been a bit of an overkill

[WkdPaul]

* thread moved to the Servers and NAS section *

[Marko Rogulja]

Dont forget one mayor thing. Replication does not protect from data corruption. So... if you have (lets call primary NAS R1) R1 in RAID 0, if you loss disk, and in doing so you get data corruption (opened file, files in transition and similar) that data corruption will be replicated to all other NASs.

 

My recommendation is to have RAID5 or raid 1/0 on primary and then have RAID 0 on second NAS where you can use extra space for multiply copies or versioning (snapshots) and then again raid 5 on last NAS for long term security of data.

 

 

[Quinntun]

On 11/24/2020 at 3:39 PM, Marko Rogulja said:

Dont forget one mayor thing. Replication does not protect from data corruption. So... if you have (lets call primary NAS R1) R1 in RAID 0, if you loss disk, and in doing so you get data corruption (opened file, files in transition and similar) that data corruption will be replicated to all other NASs.

 

My recommendation is to have RAID5 or raid 1/0 on primary and then have RAID 0 on second NAS where you can use extra space for multiply copies or versioning (snapshots) and then again raid 5 on last NAS for long term security of data.

 

 

Thanks