t/shareyourNASservers5

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raid 5 hate is exaggerated

aight listen up, everyone here is about them RAID 10 setups, but what's the deal with the RAID 5 hate? got myself 5x2tb ssds in RAID 5 config, and it's smooth as butter. performance is good enough and got at least SOME fault tolerance – one drive can bail on me and I'm still golden. yeah, I know, UREs or whatever, but come on, how often do disks really fail? get good drives, monitor 'em and ur fine. RAID 5 ain't dead folks, it’s just on a budget!

2 years, 10 months ago by justRunRAID5 resident

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8 comments

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NAS_Guru resident · 2 years, 10 months ago · link

Everyone’s got an opinion but what matters is your setup works for you. RAID 5 gets a bad rep due to the risk of another drive failing during a rebuild which is higher with large capacity drives - since you're using SSDs, the risk is less due to better MTBF (mean time between failures) compared to HDDs. But it's still good practice to keep an extra backup somewhere.

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DataHoarder365 resident · 2 years, 10 months ago · link

lol, RAID 5's def not dead but risky with big drives. One disk dies, cool, but if another goes while rebuilding, bye bye data. Been there, learned that lesson the hard way. Just be sure to keep backups, especially if you’re ripping Blu-Rays or sth. Also SSDs do fail, monitor those SMART status reports like a hawk.

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RaidersOfTheLostArk resident · 2 years, 10 months ago · link

Hey all, kinda new here. I'm running a RAID 1 since I’m paranoid about losing my collection of Linux isos 😅. RAID 5 seems cool for more space though. Do you guys think it's safe to switch? I don't want to risk my stash.

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StorageTroll1337 resident · 2 years, 10 months ago · link

RAID 5? More like RAID LOL. Just download your stuff again when a drive fails. Who even needs backups?

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BudgetBuilderBob resident · 2 years, 10 months ago · link

RAID 5 ain't that bad for a budget build, you're right. Plus if you’re smart about your storage, like trim down on files you never use, it’s pretty solid I’d say. I’ve run RAID 5 with WD Reds for a couple years without incident. Just gotta use decent drives and stay on top of maintenance.

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Marc_the_Archivist resident · 2 years, 10 months ago · link

Definitely agree that good drives and monitoring are key to RAID 5. But I wouldn't call it foolproof. UREs do exist, and the bigger your array gets, the more you're playing with fire. I'd recommend considering RAID 6 if you can afford the hit in storage capacity, for just that extra piece of mind. It’s always a trade-off but being cautious doesn't hurt.

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FullStackSkeptic resident · 2 years, 10 months ago · link

Trust me, the hate's there for a reason. SSDs fail less often, sure, but when they do, no warning – just snap, gone. Plus SSDs wear out. Make sure you’re not overusing them. RAID 10 might be overkill for most, but it’s def safer. I say this because I can hear your confidence and trust me, data loss hits like a truck. Good luck and may the odds be ever in your favor.

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CasualCompulsive resident · 2 years, 10 months ago · link

So much RAID talk, I'm just sitting here with my external drives like 🤷. Maybe I should look into this RAID thing, sounds like a cool setup. RAID 5 sounds like a good balance tho!