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Forum Discussion
Raid only a partition
Hi,
I'm interested in Netgear RN10200. I would like to know if it's possible to raid (1) just a part of two hard drives, and leave other partitions in a non raid state (or JBOD if I understand correctly).
Practical case: I have family photos and documents that I would like to be protected with a raid 1; then I have some other data I don't care too much.
Using 2x3TB hard drive I would like to create a 500GB partition on each drive, raid these and use the other ~2,5TB + 2,5TB for other data.
I don't think this can be done with the GUI, but I could do via terminal using mdadm.
If this is not possibile, the "backup" solution would be to not use raid at all and duplicate manually the "documents" and "picture" folders. With no raid, I can see the disk as separate or the system will hide details and show me a unique disk like it can be done with LVM?
I'm new to the NASes world, sorry if I asked any expected question.
Thanks.
I'm interested in Netgear RN10200. I would like to know if it's possible to raid (1) just a part of two hard drives, and leave other partitions in a non raid state (or JBOD if I understand correctly).
Practical case: I have family photos and documents that I would like to be protected with a raid 1; then I have some other data I don't care too much.
Using 2x3TB hard drive I would like to create a 500GB partition on each drive, raid these and use the other ~2,5TB + 2,5TB for other data.
I don't think this can be done with the GUI, but I could do via terminal using mdadm.
If this is not possibile, the "backup" solution would be to not use raid at all and duplicate manually the "documents" and "picture" folders. With no raid, I can see the disk as separate or the system will hide details and show me a unique disk like it can be done with LVM?
I'm new to the NASes world, sorry if I asked any expected question.
Thanks.
4 Replies
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raskion wrote: I would like to know if it's possible to raid (1) just a part of two hard drives, and leave other partitions in a non raid state (or JBOD if I understand correctly)
It is not possible to set RAID1 on just a part of the 2 drives. However, if you think that this possible with "mdadm'' via root/SSH access then you may do so then kindly post the results here in the forum community as reference for others.
You may consider the RN314 which is a 4-bay Intel-based ReadyNAS OS 6 model. Insert 4 drives in it and you can configure 2 volumes: set the 2 drives as RAID1 and set the other 2 drives as JBOD or RAID0. Kindly check this link: http://netgear.com/images/pdf/ReadyNAS_ ... 700_DS.pdf
On a normal linux system you could do this with mdadm. The GUI and NAS software is not designed to support it though. So you'll have trouble setting up shares, etc. I don't suggest it.raskion wrote: I don't think this can be done with the GUI, but I could do via terminal using mdadm.
This will work. You use flexraid, and create two data volumes (one per disk). The share names have to be unique though (documents, backup-documents). Or just create a backup share on the second disk, and create subfolders named documents and picture.raskion wrote: If this is not possibile, the "backup" solution would be to not use raid at all and duplicate manually the "documents" and "picture" folders. With no raid, I can see the disk as separate or the system will hide details and show me a unique disk like it can be done with LVM?
You can also set up backup jobs that will update the backups automatically (on a schedule you set).Ixa wrote: You may consider the RN314 which is a 4-bay Intel-based ReadyNAS OS 6 model. Insert 4 drives in it [...]
Thanks, but 4 bay is too much for me.StephenB wrote: The GUI and NAS software is not designed to support it though. So you'll have trouble setting up shares, etc. I don't suggest it.
Still, good to know. I like to set up every single option, if this mean to give up the GUI, no problem. I don't know ReadyNAS, but I will take into consideration pros and cons.StephenB wrote: The share names have to be unique though (documents, backup-documents).
Do I need to share both disks/folders? Can't I just share one of them and duplicate the other just for safety?StephenB wrote: You can also set up backup jobs that will update the backups automatically (on a schedule you set).
Thanks, this could be very useful.
4 bays are cheaper to expand later on (if you start with two disks). So that might be a consideration.raskion wrote: Thanks, but 4 bay is too much for me.
It's easiest to set up shares - having the second volume with a single backup share is what I'd do.raskion wrote: StephenB wrote: The share names have to be unique though (documents, backup-documents).
Do I need to share both disks/folders? Can't I just share one of them and duplicate the other just for safety?
One benefit is that a backup share allows you to access the backup from your client devices.
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