On 2014-08-21, Valeri Galtsev <galtsev@xxxxxxxxxxxxxxxxx> wrote:
> (And I do not include into hardware RAID these fake "raid" cards
> that rely on "driver" - which are indeed software RAID cards. 3ware never
> fell that low to make/sell any of such junk. Somebody who knows LSI better
> than I do will probably say the same about them).
LSI has owned 3ware for some time (who in turn were recently gobbled by
some other company). The LSI MegaRAID cards are real hardware RAID.
What I have heard, but only validated the former, is that the 3ware UI
is simpler but the MegaRAID controllers are faster.
That being said, I do also like mdraid for certain purposes. I was able
to successfully repurpose a very old controller in an old but nicely
sized chassis (16 bays) by moving to an md RAID6 array, which the
hardware controller doesn't support (I did say it's old). I also love
the want_replacement feature in md RAID, a feature I don't believe is
supported in the 3ware line (you can "rebuild" just one disk if it's bad
but hasn't been kicked out of the array yet; that rebuild is much
faster).
--keith
--
kkeller@xxxxxxxxxxxxxxxxxxxxxxxxxx
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