Adding to a pool

martcart78

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Oct 28, 2021
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Hi all

I am Martin I am new to truenas. I need some info. Can I add an hdd to a pool to make it bigger
 

sretalla

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Can I add an hdd to a pool to make it bigger
It depends (technical answer, yes, of course, but you may or may not want the result that gets you).

If you add a new disk to your pool as a vdev of 1 disk, you'll be making that disk a stripe with the rest of your pool and that disk will then be directly tied to the fate of the entire pool... if it fails, your pool is dead.

What is your current pool layout?

Are you asking...

I have a RAIDZ pool of 3 disks and I want to add one disk to that RAIDZ to make it bigger?

Simple answer to that question is absolutely not (at least for now... search on RAIDZ expansion... it's coming eventually to do that).

Is your pool currently only one disk?

You can add another, but that will make a stripe with no redundancy, (see my first warning above).

show us the output (preferably in code tags) of zpool status and maybe we can guide you better... also let us know your hardware specs and what your overall goal for the system is.
 
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