Le 22/12/2015 20:03, koukou73gr a écrit :
Even the cheapest stuff nowadays has some more or less decent wear
leveling algorithm built into their controller so this won't be a
problem. Wear leveling algorithms cycle the blocks internally so wear
evens out on the whole disk.
But it would wear out faster, as wear leveling targets using *all* pages
the same number of times, even the ones which are already used. That's
another cause of write amplification for you. [0]
[0] https://en.wikipedia.org/wiki/Write_amplification#Wear_leveling
Even more so, on cheaper SSDs, where the wear leveling algorithm may be
somewhat less intelligent than on so-called "data center" SSDs.
-K.
On 12/22/2015 06:57 PM, Alan Johnson wrote:
I would also add that the journal activity is write intensive so a small part of the drive would get excessive writes if the journal and data are co-located on an SSD. This would also be the case where an SSD has multiple journals associated with many HDDs.
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