Is it OK/What are the implications of doing this?

[NASbox]

I ran across this post.... looks like someone partitioned their boot drive and used part of it as a storage pool:
https://www.truenas.com/community/t...t-is-mirrored-and-is-part-of-two-pools.96682/
Given the really weird pricing on SSDs these days.... (almost no decent cheap/small drives), and in many cases larger/faster drives that would make great SSD pools are selling at the same price/lower price than low capacity/lower spec drives?

 

[Patrick M. Hausen]

It's completely unsupported, use at your own risk.

For decently priced smaller drives: https://us.transcend-info.com/Consumer

 

[joeschmuck]

This question has been coming up a lot lately. As @Patrick M. Hausen has said, it's not supported, meaning when you have a software update, your extra partition may stop working. I've done this just to test it out many moons ago and it worked. I created a partition on my boot SSD that I assigned as a ZIL, it worked like a champ. But I didn't need a ZIL and it was only to see if I could do it. It lasted for a few weeks and then I blew away the partitions and recreated my boot SSD the supported way.

Here is another example where it would be unsupported... Let's say your boot drive dies. You replace it. You will need to manually reconfigure the partition(s) then install TrueNAS, then setup the SLOG/ZIL again. It's not a simple restoration of a config file, like it should be. It is doable but is it worth the headache?

My advice is if you are looking to use a SSD as the boot device, buy the least expensive regardless of the size, so long as it's 16GB or more. If you purchase a 256GB SSD, just think of it being over-provisioned by 1,600% minimum.

 

[NASbox]

Thanks.... @Patrick M. Hausen , @joeschmuck I will stay far away from this one.

 

[jgreco]

I have to waste an entire drive just for booting?

This resource was originally created by user: jgreco on the TrueNAS Community Forums Archive. Please DM this account or comment in this thread to claim it. With the advent of TrueNAS Scale, we seem to be getting a large number of people from the Linux community who are not quite grasping what...

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