# [OmniOS-discuss] Samsung SM863

Richard Elling richard.elling at richardelling.com
Thu Dec 10 20:43:25 UTC 2015

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    > On Dec 10, 2015, at 12:02 PM, Dave Pooser <dave-oo at pooserville.com> wrote:
    >
    > On 12/10/15, 12:13 PM, "OmniOS-discuss on behalf of Richard Elling"
    > <omnios-discuss-bounces at lists.omniti.com on behalf of
    > richard.elling at richardelling.com> wrote:
    >
    >>
    >>> On Dec 10, 2015, at 4:58 AM, Tobias Oetiker <tobi at oetiker.ch> wrote:
    >>>
    >>> Just found that samsung now has an ssd with  power loss protection
    >>>
    >>> http://www.storagereview.com/samsung_sm863_ssd_review
    >>>
    >>> what do you think ?
    >>
    >> Power-loss protection is not required (ZFS works on HDDs :-) but it is a
    >> nice feature.
    >
    > On a device that will likely be used for ZIL, I'd call power-loss
    > protection required. HDDs don't lie to the OS about when data has been
    > flushed from cache to disk the way SSDs do, right?

    You do need a device that honors cache flush commands. But that goes for
    any device or RAID array, not just SSDs.
     -- richard

    >
    > On a device that's going to be L2ARC I care a lot less, obviously. ;-)
    > --
    > Dave Pooser
    > Cat-Herder-in-Chief, Pooserville.com
    >
    >
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