Need to Grow RAID - Opinions? Experience?

Gemeinschaft · 17. Februar 2014

I currently use OMV for my NAS at the house.

My system has Two 2TB HDD in a RAID 1 configuration. I need to grow my RAID and I am thinking about adding Two 4TB HDD to the RAID, assuming that that would leave me with roughly 6TB of mirrored storage.

My question is, will I have issues adding disks that are larger than I currently have installed?

Also, if you have any suggestions about how best to move forward with this expansion, please let me know. I am making a full backup of my 2TB of data before starting the upgrade, just in case I have some issues, but I want to hear back from the community before I take any major steps .

Thank you in advance,

KM0201 · 20. Februar 2014

If I'm understanding correctly, you're not really "Growing" your RAID... You're just going to have two RAID1's (one will be 2tb, and one will be 4tb). I don't use RAID, but I don't see how this will be an issue.

Gemeinschaft · 21. Februar 2014

That makes sense, Would I be able to then expand the filesystem to span both RAIDs?

davidh2k · 21. Februar 2014

With LVM you would be. But I don't like it and there are other pooling solutions that we support via Plugins. May someone else suggest you something ...

Greetings
David

ryecoaaron · 21. Februar 2014

The aufs plugin would work perfect for that.

Gemeinschaft · 21. Februar 2014

Basically, I have my filesystem set up the way I want it, but it is now growing past the size of my 2TB RAID. I need to figure out what the best solution is going to be to expand, hopefully without changing the filesystem.

I am a photographer who uses OMV as my NAS for storing my pictures. As I continue to grow, I need to be able to scale my storage. When I built it, 2TB seemed like a lot... Now, I am starting to see that I am going to run out of room soon.

I appreciate everyone's input. I will look at aufs and check it out.

davidh2k · 21. Februar 2014

Hmm... You use a RAID1. Aren't you afraid to delete fotos by mistake? If you do, they will be deleted on both drives. I would suggest you to think about it, if not synching files with rsync may be better solution over RAID1.

Our Team meber Dennis is a photographer too, and thats the way how he secures his photos. Especcially against accidental deletion.

Greetings
David

Gemeinschaft · 21. Februar 2014

I keep backups of my RAW images, so if it gets deleted, I can restore them. I have some external hard drives as well as cloud storage for backups. The problem with cloud storage is that I am about to move into a new pricing tier with my storage needs, so I may have to start being more selective with what I backup online.

KM0201 · 21. Februar 2014

Zitat von "Gemeinschaft"

I keep backups of my RAW images, so if it gets deleted, I can restore them. I have some external hard drives as well as cloud storage for backups. The problem with cloud storage is that I am about to move into a new pricing tier with my storage needs, so I may have to start being more selective with what I backup online.

Actually, I prefer rsync to raid1 as well. Setting up some automatic jobs to sync "Drive A" to "Drive B" is really pretty simple. As a safety net, don't set the sync job to automatically delete. Then every so often, log in to the webUI, set the job to delete anything not on the source, run the job manually, then disable the delete function again.

Gemeinschaft · 21. Februar 2014

Thank you KMO201

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