[OmniOS-discuss] Moving The Root Pool

[Andre Kruger]

On 2017/02/14 15:38, Stephan Budach wrote:
> Hi Andre,
>
> well, I wouldn't call it dead… there is a way to accomplish, what you 
> want and I had already performed such an action before. However, I 
> cannot recall all the steps necessary. Looking at the link Dan 
> provided, the steps lined out in the document  are still valid and I 
> don't think that there is an easier way to do it.
>
> Regarding the other issues about a general advice against using a SSD 
> as a rpool… there is none I know of. Depending on the manufacturer you 
> may want to provide enough free space on the SSD, as I don't know if 
> Ilumos/OmniOS have come up to speed regarding TRIM, but you can always 
> counter that by providing enough space for the SSD's GC.
> If a SSD is suited as a rpool in Ilumos may be hard to judge. All I 
> know is, that you should stay away from Samsung EVOs… unless you're 
> operating them in a Windows environment.
>
> Cheers,
> Stephan

Hi Stephan

No sorry I think there is a misunderstanding. SSDs are excellent for 
rpool. I was talking about taking a HDD on which rpool is installed ie a 
running system. Shutting it down. Then cloning the HDD to the SSD. Plug 
the SSD into the previously running machine and just boot it up. Using 
this method is much easier, simpler, and faster.

But, on many Windows forums there are warning cloning a HDD directly to 
an SSD, of the boot drive drive C, and then using the SSD. Apparently 
many users have experienced very slow performance. You can however clone 
from HDD to HDD or SSD to SSD without these performance problems. From 
there my question if anybody knows of a caveat not to do it in this way 
if I want to clone my rpool from HDD to SSD. If none I would rather walk 
this path as it is far less trouble.

BTW, why should one steer clear of the Samsung EVO's?


Regards
André
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