Selfhosted

39488 readers

325 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:

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

Better to use 2 drives for RAID, or for Volume backup? (lemmy.ca)

submitted 1 year ago by andykm@lemmy.ca to c/selfhosted@lemmy.world

13 comments fedilink hide all child comments

I have a DS220+ with 2 identical drives, configured as RAID, so just one volume. Everything was working great, but to access the new object-recognition in photos, I added RAM, which caused some corruption and now the volume is read-only and won't repair itself (even after removing the RAM). So now I'm preparing to do an external backup and rebuild the NAS. But now I'm wondering: If volume issues are more likely than drive issues, should I forget about RAID, create one volume on each drive, and use the second volume as a local backup? Or is RAID still the best first line of defence? (Or is there a way I can do both with two drives?

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

[–] ErwinLottemann@feddit.de 1 points 1 year ago* (last edited 1 year ago)

~~RAID10 does not offer more 'protection' than RAID1 as it is just half of the disks of an even number of disks bun hed up as one and mirrored onto the other half. the capacuty of a 2 disk 4TB RAID1 is the same as a 4 disk 2TB RAID10. using 8 disk of 8TB in a RAID10 would give a usa le capacity of 32TB, using RAID5 it would be 56TB(!), even RAID6 would have more capacity (48TB) and you could lose up to two disks at a time. here is a calculator for this~~

i just saw you other response where you basically explained the same. sorry!