RAID SSD and SATA

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Ripened a question — is it possible to combine in a mirrored RAID array hard drives: SSD and SATA? If possible, would not the SATA hard drive to slow down with the SSD?
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now there's a good SSD on a PCI-E motherboard (with integrated raid controller), show the results a little better than SSD to SATA
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The mirror should start to slow down. Look in Google about FlashCache maybe you could use it.
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Depends on a number of things, I think. The Union of two disks in one increases the probability of data loss, so first make backup.
\r
Also depends on what data is written where and in what order. The distribution of large data files on the SSD will be significantly faster than the SATA drive and the benefit will be lost.
\r
If you use a home computer and not with the purpose of improving the reliability, you will get a car with a hybrid performance that is not as good as pure SSD in performance, but still better than the two 7200 RPM disk.
\r
I would have done it himself? No, I would not reduce the reliability of my system and to increase the chances of data loss for fast disk performance.
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Hmm... in my opinion, even where that habré was an article concerning the merger of SATA + SSD in RAID 1 in which I wrote them all on both screws, but the reading was only with SSD. All this was raised on software ride under Linux (apparently a piece of iron do not allow this). Unfortunately the article yet I can not find.
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Adaptec hybrid RAID does, but there is read-only :(
He has MaxIQcache
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And unless SATA is not a data transfer Protocol, in this case HDD SATA call O_o. This refers to the same HDD and SSD. Why does everyone call HDD SATA? Or I not correctly understand?
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