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What's the Best RAID for 4 drives NAS?

fos1x
By fos1x
in Storage Devices
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- Raid 0, for all 4 drives you are now 4 times more likely losing your data than 1 drive! but your drive is kind'a lot's faster!

 

- Raid 0-0, drive A raid 0 with drive B, drive D raid 0 with drive D (is this even possible?) your drive is faster but with 2 time more likely to lose your data than 1 drive!

 

- Raid 1, 3 drives redundant, that is mad since you have 3 back-ups means you only have the capacity of 1 drive

 

- Raid 1-1, 2 drives as redundant, you are now 50% less likely to lose your data than 1 drive

 

- Raid 10, drive A raid 0 with drive B, drive C raid 0 with drive D are the back up (raid 1) of drive A&B, you only have half of the 4 drives capacity, but a tap faster in speed! if your A&C or D&B fail at the same time... you are toast!

 

- Raid 6, is Raid 10 with Vodo magic even though it's slower but you can lose any of 2 of your drive at the same time!

 

- Raid 5, is... great! you can use 3 out of 4 drive, it faster than 1 drive, and you can fail any 1 drive... but it got cursed by some stupid Canadian!
 

- so what's the best raid setup for 4 drives NAS? or not raid at all just buy a high-quality HDD and just hit up data recovery center when shit hit the fan?

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4 minutes ago, dafo446 said:

Raid 1, 3 drives redundant, that is mad since you have 3 back-ups

RAID =! Backup

It would very much depend on how much you want the data on those drives imo.

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Matter of taste and all, though RAID0 in a NAS doesn't really make much sense, unless you've got 10Gbit network, because it'd just saturate 1Gbit network instantly.

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5 hours ago, dafo446 said:

- Raid 0, for all 4 drives you are now 4 times more likely losing your data than 1 drive! but your drive is kind'a lot's faster!

 

- Raid 0-0, drive A raid 0 with drive B, drive D raid 0 with drive D (is this even possible?) your drive is faster but with 2 time more likely to lose your data than 1 drive!

RAID0 is the most bullshit of all and obsolete these days as you can get SSDs and other shit if you want that.

And if something goes wrong (like bad connection or a drive dies), all the data is gone. So worst of all.

5 hours ago, dafo446 said:

- Raid 1, 3 drives redundant, that is mad since you have 3 back-ups means you only have the capacity of 1 drive

You don't have a backup!

You have redundancy!

That means that if one drive fails, nothing bad will happen.

 

BUT: If you (accidentally) delete a file, its gone.

5 hours ago, dafo446 said:

- Raid 1-1, 2 drives as redundant, you are now 50% less likely to lose your data than 1 drive

 

- Raid 10, drive A raid 0 with drive B, drive C raid 0 with drive D are the back up (raid 1) of drive A&B, you only have half of the 4 drives capacity, but a tap faster in speed! if your A&C or D&B fail at the same time... you are toast!

Useless as well as you loose too much capacity with no obvious benefit.

 

5 hours ago, dafo446 said:

- Raid 6, is Raid 10 with Vodo magic even though it's slower but you can lose any of 2 of your drive at the same time!

Its not voodoo magic, they are just RAID0 with additional information that can be used to use to recover the data from the lost drive.

 

And with 4 Drives, Raid 6 is not recommended as your capacity is Number of drives added minus 2 Drives. So no, avoid it...

 

5 hours ago, dafo446 said:

- Raid 5, is... great! you can use 3 out of 4 drive, it faster than 1 drive, and you can fail any 1 drive... but it got cursed by some stupid Canadian!

And because of that its the preferred thing for 4 drives. RAID 6 is something for like 5 Drives and up...

 

And the performance depends on the Controller and the Power it has...

But since we're talking about GBit LAN, that's limiting anyway.

On a good, new not fragmented drive, you can write easily 100MByte/sec without any problems...

 

5 hours ago, dafo446 said:

- so what's the best raid setup for 4 drives NAS? or not raid at all just buy a high-quality HDD and just hit up data recovery center when shit hit the fan?

I'd use RAID 5 because one drive can fail without any data getting lost.

 

But bear in mind that you have to have a Backup solution of some kind as well.

 

Or as someone is saying:
If some kind of data doesn't exist in 3 places, it is non existant...

Wich means that you have to have it on the original source, a backup and an off site backup as well.

 

 

A RAID helps reliability of the drives, it is NOT a replacement for a Backup!

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