Selfhosted

40316 readers

386 users here now

A place to share alternatives to popular online services that can be self-hosted without giving up privacy or locking you into a service you don't control.

Rules:

Be civil: we're here to support and learn from one another. Insults won't be tolerated. Flame wars are frowned upon.
No spam posting.
Posts have to be centered around self-hosting. There are other communities for discussing hardware or home computing. If it's not obvious why your post topic revolves around selfhosting, please include details to make it clear.
Don't duplicate the full text of your blog or github here. Just post the link for folks to click.
Submission headline should match the article title (don’t cherry-pick information from the title to fit your agenda).
No trolling.

Resources:

selfh.st Newsletter and index of selfhosted software and apps
awesome-selfhosted software
awesome-sysadmin resources
Self-Hosted Podcast from Jupiter Broadcasting

Any issues on the community? Report it using the report flag.

Questions? DM the mods!

founded 1 year ago

MODERATORS

HybridSarcasm@lemmy.world

HybridSarcasm@lemmy.hybridsarcasm.xyz

Using disc spanning for RAID array (lemmy.world)

submitted 5 months ago by qaz@lemmy.world to c/selfhosted@lemmy.world

9 comments fedilink hide all child comments

I'm planning on building a new home server and was thinking about the possibility to use disc spanning to create matching disk sizes for a RAID array. I have 2x2TB drives and 4x4TB drives.

Comparison with RAID 5

4 x 4 TB drives

1 RAID array
12 TB total

4 x 4 TB drives & 2 x 2 TB drives

2 RAID arrays
14 TB total

5 x 4* TB drives

Several 4TB disks and 2 smaller disks spanned to produce a 4 TB block device
16 TB total

I'm not actually planning on actually doing this because this setup will probably have all kinds of problems, however I do wonder, what would those problems be?

you are viewing a single comment's thread
view the rest of the comments

[–] mlaga97@lemmy.mlaga97.space 3 points 5 months ago

I ran RAID-Z2 across 4x14TB and a (4+8)TB LVM LV for close to a year before finally swapping the (4+8)TB LV for a 5th 14TB drive for via zpool replace without issue. I did, however, make sure to use RAID-Z2 rather than Z1 to account for said shenanigans out of an abundance of caution and I would highly recommend doing the same. That is to say, the extra 2x2TB would be good additional parity, but I would only consider it as additional parity, not the only parity.

Based on fairly unscientific testing from before and after, it did not appear to meaningfully affect performance.