Selfhosted

39980 readers

781 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

How RAID system reliable? possible of raid system failure (lemm.ee)

submitted 5 days ago by aTun@lemm.ee to c/selfhosted@lemmy.world

49 comments fedilink hide all child comments

I know how RAID work and prevent data lost from disks failures. I want to know is possible way/how easy to recover data from unfunctioned remaining RAID disks due to RAID controller failure or whole system failure. Can I even simply attach one of the RAID 1 disk to the desktop system and read as simple as USB disk? I know getting data from the other RAID types won't be that simple but is there a way without building the whole RAID system again. Thanks.

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

[–] anamethatisnt@lemmy.world 13 points 5 days ago (1 children)

            
              RAID is never a replacement for backups.
Never work directly with a surviving disk, clone it and work with the cloned drive.
Are you sure you can't rebuild the RAID? That really is the best solution in many cases.
If a RAID failure is within tolerance (1 drive in a RAID5 array) then it should still be operational. Make a backup before rebuilding if you don't have one already.
If more disks are gone than that then don't count on recovering all data even with data recovery tools.

[–] r00ty@kbin.life 3 points 5 days ago (1 children)

The OP made clear it was a controller failure or entire system (I read hardware here) failure. Which does complicate things somewhat.

[–] anamethatisnt@lemmy.world 3 points 5 days ago

Yeah, if there's a full system failure without any backups and no option to get the system operational again then I would land in clone the drives before trying to restore data from them.