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RAID 5 with 3 drives worth it?

Lord Nicoll

I've usually just used RAID 10 for my drives, but I have three drives and thought about a RAID 5 array, but usually I have used 4 or 5 drives for those, I have no experience with 3 drive arrays, would it be worth it even? I know I'd have more space than a RAID 1 array, since I'd only have either 1/3 the room or 1/2 the room with s spare drive. 

Yours faithfully

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Not worth it IMO. For RAID 5, I'd start with a minimum of 4 drives. At 3 drives you're not really getting the full benefits of RAID 5 and if you lose a drive and need to rebuild, you'll be getting the downsides of RAID 5 as well. 

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My storage server started with 3 drives in raid 5.  it worked fine.  It's now up to 24 drives in raid 60 (2 raid 6 partitions raid 0'd together for 4 drives of redundancy) along with 2 hotspares.

Workstation:  14700nonK || Asus Z790 ProArt Creator || MSI Gaming Trio 4090 Shunt || Crucial Pro Overclocking 32GB @ 5600 || Corsair AX1600i@240V || whole-house loop.

LANRig/GuestGamingBox: 13700K @ Stock || MSI Z690 DDR4 || ASUS TUF 3090 650W shunt || Corsair SF600 || CPU+GPU watercooled 280 rad pull only || whole-house loop.

Server Router (Untangle): 13600k @ Stock || ASRock Z690 ITX || All 10Gbe || 2x8GB 3200 || PicoPSU 150W 24pin + AX1200i on CPU|| whole-house loop

Server Compute/Storage: 10850K @ 5.1Ghz || Gigabyte Z490 Ultra || EVGA FTW3 3090 1000W || LSI 9280i-24 port || 4TB Samsung 860 Evo, 5x10TB Seagate Enterprise Raid 6, 4x8TB Seagate Archive Backup ||  whole-house loop.

Laptop: HP Elitebook 840 G8 (Intel 1185G7) + 3060 RTX Thunderbolt Dock, Razer Blade Stealth 13" 2017 (Intel 8550U)

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20 hours ago, Electronics Wizardy said:

What are you using the storage for?

 

Its not a bad solution.

It's for VMware datastore, I ended up using the RAID 5 and it works fine, more room than my old RAID 1 and a little bit faster. 

20 hours ago, AnonymousGuy said:

My storage server started with 3 drives in raid 5.  it worked fine.  It's now up to 24 drives in raid 60 (2 raid 6 partitions raid 0'd together for 4 drives of redundancy) along with 2 hotspares.

I prefer the RAID 50 mirrored on another RAID 50 because I hate my drives and fuck density. Reading speed isn't need, but bulkish storage is. My Minecraft server is starting to use a lot more storage than I thought it would from plugins and exploration, so it was eating up the room on my last server. 

Yours faithfully

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