What is the best settings for 3 2TB disks

[carlosmdlourenco]

Hello,

I'm new to truenas and NAS in general.
I just build a NAS with this hardware.

Athlon 3000G
16GB RAM DDR4
3 x 2TB WD RED

2,5GBIT

I want to use this NAS to make backups of my business websites, so its very important data and to share some files with my team, pdfs, videos etc.
Each backup is 20GB size, so the drivers are more than enough to save the last 7 days.

My question is, what settings I use, so I don't lose any data in case a disk dies. Raid 5? 3 way mirror?

Thank you!

[jaslion]

Since at most you'll ever have on there is 140gb of data a 3 way mirror sounds best.

[tikker]

Sounds like 3-way mirror is good for your case. And a backup system as the next step since you deem it very important.

[Blue4130]

3 hours ago, carlosmdlourenco said:

Hello,

I'm new to truenas and NAS in general.
I just build a NAS with this hardware.

Athlon 3000G
16GB RAM DDR4
3 x 2TB WD RED

2,5GBIT

I want to use this NAS to make backups of my business websites, so its very important data and to share some files with my team, pdfs, videos etc.
Each backup is 20GB size, so the drivers are more than enough to save the last 7 days.

My question is, what settings I use, so I don't lose any data in case a disk dies. Raid 5? 3 way mirror?

Thank you!

Use two of the drives in RAID 1 and then use the 3rd drive as a backup that you take off-site when you are not using it.

[Needfuldoer]

RAID is not a backup. RAID is insurance against having to restore from your backups. 
 

A three-way mirror with ZFS snapshots (so you can roll back changes and restore accidentally deleted files) is appropriate for your online storage. You’ll want to look into an offline archive too. Always follow the 3-2-1 principle!

[cmndr]

On 6/19/2022 at 6:23 AM, Blue4130 said:

Use two of the drives in RAID 1 and then use the 3rd drive as a backup that you take off-site when you are not using it.

This.

 

Cold backup that you periodically sync.

[LIGISTX]

On 6/19/2022 at 8:26 PM, Needfuldoer said:

RAID is not a backup. RAID is insurance against having to restore from your backups. 
 

A three-way mirror with ZFS snapshots (so you can roll back changes and restore accidentally deleted files) is sppropriate for your online storage. You’ll want to look into an offline archive too. Always follow the 3-2-1 principle!

This. 100%
 

And on top of that, since RAID is not a backup, use something like backblaze b2 which is integrated right into truenas. Have it do a nightly or every few days sync up to backblaze (it does cost money to backup, backblaze is a good price, but it’s enterprise software, every transaction costs a little bit of money, but it’s cheap in the scheme of things), and then your pretty well covered.