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Options to combine two virtual disks into one

New installs of XigmaNAS.
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eponymous
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Options to combine two virtual disks into one

Post by eponymous »

Hi,

I've got two virtual disks on my system:

VD0 - RAID6 - 20TB on one LSI hardware RAID controller
VD1 - RADI6 - 10TB on the second LSI hardware RAID controller

I want to be able to combine these two drives into one so I can have a file system which spans them both.

Is this possible under NAS4Free? Under Linux I'd normally use LVM but I don't see any support for that in NAS4Free.

Many thanks for your help.

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raulfg3
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Re: Options to combine two virtual disks into one

Post by raulfg3 »

you can use ZFS, create a vdev for vd0 and same for vd1 , and confine both in a big ZFS Pool.


PD: My recomendation is not use virtual disk on ZFS, use real disk instead and configure ZFS to manage redundancy, is the good a best aproach to modern filesystem.


But is your NAS and you can do test to compare, eg: extract 1 or 2 disk and replace for new ones and do a scrub to restore data, and compare scrub time in both aproach.

in case you need to upgrade motherboard and/or controller, ZFS works fine with real disk, and need exact same controller for virtual disk, that can be a problem in the future.
12.1.0.4 - Ingva (revision 7743) on SUPERMICRO X8SIL-F 8GB of ECC RAM, 11x3TB disk in 1 vdev = Vpool = 32TB Raw size , so 29TB usable size (I Have other NAS as Backup)

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eponymous
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Re: Options to combine two virtual disks into one

Post by eponymous »

This is a great suggestion - thanks :)

However, I was very absent-minded when I posted my question and totally forgot to state that I'm wanting do this without using ZFS. :P

Are there any ways? I'm looking to encrypt the volume as well. Would putting them in a software RAID0 be the only options? i.e combine my two hardware RAID6s into a single software RAID0?

Thanks again!

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