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Quick raid 5 question?

Ravendarat
By Ravendarat
in Servers, NAS, and Home Lab
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I want to use my old desktop as a home storage server, I have one 8tb drive right now that has the majority of my data on it, I want to buy two more 8tb drives and run raid 5 so I have approx 16 tb of space and a parity drive (I know I am not actually gonna have 16tb but im using easy numbers). Anyways can I set up the RAID 5 with my drive that already has data on it without losing it all or do I have to buy 3 new drives and then transfer the current 8tb contents over after building it? The drive I have is only 6 months old so I would prefer to just buy 2 more but if thats not an option than I guess Ill just add it in afterwards and have 24ish tb of storage

 

 

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Posted
6 minutes ago, Ravendarat said:

Anyways can I set up the RAID 5 with my drive that already has data on it without losing it all

No, you'll have to build the array from scratch.

 

7 minutes ago, Ravendarat said:

but if thats not an option than I guess Ill just add it in afterwards

Also not possible. I'm not aware of any RAID5 implementation that allows for expansion like that.

Main System (Byarlant): Ryzen 7 5800X | Asus B550-Creator ProArt | EK 240mm Basic AIO | 16GB G.Skill DDR4 3200MT/s CAS-14 | XFX Speedster SWFT 210 RX 6600 | Samsung 990 PRO 2TB / Samsung 960 PRO 512GB / 4× Crucial MX500 2TB (RAID-0) | Corsair RM750X | Mellanox ConnectX-3 10G NIC | Inateck USB 3.0 Card | Hyte Y60 Case | Dell U3415W Monitor | Keychron K4 Brown (white backlight)

 

Laptop (Narrative): Lenovo Flex 5 81X20005US | Ryzen 5 4500U | 16GB RAM (soldered) | Vega 6 Graphics | SKHynix P31 1TB NVMe SSD | Intel AX200 Wifi (all-around awesome machine)

 

Proxmox Server (Veda): Ryzen 7 3800XT | AsRock Rack X470D4U | Corsair H80i v2 | 64GB Micron DDR4 ECC 3200MT/s | 4x 10TB WD Whites / 4x 14TB Seagate Exos / 2× Samsung PM963a 960GB SSD | Seasonic Prime Fanless 500W | Intel X540-T2 10G NIC | LSI 9207-8i HBA | Fractal Design Node 804 Case (side panels swapped to show off drives) | VMs: TrueNAS Scale; Ubuntu Server (PiHole/PiVPN/NGINX?); Windows 10 Pro; Ubuntu Server (Apache/MySQL)


Media Center/Video Capture (Jesta Cannon): Ryzen 5 1600X | ASRock B450M Pro4 R2.0 | Noctua NH-L12S | 16GB Crucial DDR4 3200MT/s CAS-22 | EVGA GTX750Ti SC | UMIS NVMe SSD 256GB / Seagate 1.5TB HDD | Corsair CX450M | Viewcast Osprey 260e Video Capture | Mellanox ConnectX-2 10G NIC | LG UH12NS30 BD-ROM | Silverstone Sugo SG-11 Case | Sony XR65A80K

 

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Network:

Spoiler 
                           ┌─────────────── Office/Rack ────────────────────────────────────────────────────────────────────────────┐
Google Fiber Webpass ────── UniFi Security Gateway ─── UniFi Switch 8-60W ─┬─ UniFi Switch Flex XG ═╦═ Veda (Proxmox Virtual Switch)
(500Mbps↑/500Mbps↓)                             UniFi CloudKey Gen2 (PoE) ─┴─ Veda (IPMI)           ╠═ Veda-NAS (HW Passthrough NIC)
╔═══════════════════════════════════════════════════════════════════════════════════════════════════╩═ Narrative (Asus USB 2.5G NIC)
║ ┌────── Closet ──────┐   ┌─────────────── Bedroom ──────────────────────────────────────────────────────┐
╚═ UniFi Switch Flex XG ═╤═ UniFi Switch Flex XG ═╦═ Byarlant
   (PoE)                 │                        ╠═ Narrative (Cable Matters USB-PD 2.5G Ethernet Dongle)
                         │                        ╚═ Jesta Cannon*
                         │ ┌─────────────── Media Center ──────────────────────────────────┐
Notes:                   └─ UniFi Switch 8 ─────────┬─ UniFi Access Point nanoHD (PoE)
═══ is Multi-Gigabit                                ├─ Sony Playstation 4 
─── is Gigabit                                      ├─ Pioneer VSX-S520
* = cable passed to Bedroom from Media Center       ├─ Sony XR65A80K (Google TV)
** = cable passed from Media Center to Bedroom      └─ Work Laptop** (Startech USB-PD Dock)

 

Retired/Other:

Spoiler

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TrueNAS Server (La Vie en Rose): Xeon E3-1241v3 | Supermicro X10SLL-F | Corsair H60 | 32GB Micron DDR3L ECC 1600MHz | 1x Kingston 16GB SSD / Crucial MX500 500GB

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Posted
17 minutes ago, Ravendarat said:

Anyways can I set up the RAID 5 with my drive that already has data on it without losing it all or do I have to buy 3 new drives and then transfer the current 8tb contents over after building it? The drive I have is only 6 months old so I would prefer to just buy 2 more but if thats not an option than I guess Ill just add it in afterwards and have 24ish tb of storage

What are you going to use to create the RAID array?

 

Hardware RAID cards support RAID level/type migrations so you could create an initial RAID 0 of 2 disks then move the data to it, add the old disk and then migrate the array to a RAID 5. However there are few, to none I know of, software RAID implementations that allow this equivalent function. Also fair warning I can't remember if migrating from RAID 0 to RAID 5 is supported either, I've only done RAID 1 to RAID 5 and RAID 5 to RAID 6 etc

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