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Mirrored vs 4 Drive Raid

SargentFabulous1
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At the moment I am running Truenas Scale with Plex I would like to know what you all think is the safest solution for storage. Space really Isn’t really a consideration at the moment it’s more drive failure prevention. I can either use mirrored dell 600 gb SAS drives for the boot pool and mirrored 2tb mirrored SAS drives for the storage pool. Or I can use 4 old seagate 4tb desktop hard drives in Raid-z2 for the storage pool and an old Corsair ssd for the boot pool. What you guys feel most comfortable using?

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8 minutes ago, SargentFabulous1 said:

Or I can use 4 old seagate 4tb desktop hard drives in Raid-z2 for the storage pool and an old Corsair ssd for the boot pool.

This, hands down (assuming you can afford to replace the 4TB drives when they die). Save your config setup once it's running the way you want, and you'll always be able to get right back up and running if the SSD dies.

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21 minutes ago, AbydosOne said:

This, hands down (assuming you can afford to replace the 4TB drives when they die). Save your config setup once it's running the way you want, and you'll always be able to get right back up and running if the SSD dies.

That’s perfect that’s really great that’s exactly what I’ll doThank you so much!!!!! Thank you so much for your reply!!! I wasn’t sure at first but that makes total sense!!!!! I’ll just be using those 4TB drives then!!! Thank you so much again!!!!!

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7 hours ago, SargentFabulous1 said:

At the moment I am running Truenas Scale with Plex I would like to know what you all think is the safest solution for storage. Space really Isn’t really a consideration at the moment it’s more drive failure prevention. I can either use mirrored dell 600 gb SAS drives for the boot pool and mirrored 2tb mirrored SAS drives for the storage pool. Or I can use 4 old seagate 4tb desktop hard drives in Raid-z2 for the storage pool and an old Corsair ssd for the boot pool. What you guys feel most comfortable using?

The safest is to have a proper backup and not rely on raid as a backup. 

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If you're concerned about longevity, then you should probably also have a cold copy, off site, or at the very least in a somewhat different location of the home. This protects against drive encryption scams and the like.

 

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

 

RAIDz2 is safer than RAID 10, because you can lose any two drives without losing data. (In a RAID 10, if you lose both drives that contain the same half of your data, you lose the pool.) It just takes longer to resilver when you have to replace a drive.

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On 5/10/2022 at 1:13 AM, cmndr said:

If you're concerned about longevity, then you should probably also have a cold copy, off site, or at the very least in a somewhat different location of the home. This protects against drive encryption scams and the like.

 

You’re definitely right about that!!!!! I’ve been looking into it!!! Thank you so much!!!!!

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On 5/10/2022 at 6:41 AM, Needfuldoer said:

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

 

RAIDz2 is safer than RAID 10, because you can lose any two drives without losing data. (In a RAID 10, if you lose both drives that contain the same half of your data, you lose the pool.) It just takes longer to resilver when you have to replace a drive.

Really a good idea and a good point!!!!! Thank you so much!!! Really appreciate it!!!!!

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