# [OmniOS-discuss] Moving The Root Pool

Andre Kruger andre at ak47.co.za
Tue Feb 14 14:06:37 UTC 2017

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    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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