Quote:
Originally Posted by photon
Depends on the SSD I think, like I said the Sandforce controllers already do this, and are tuned in their wear leveling algorithms based on a assumed ratio of compressible data, compressing all the data first is going to throw this out of whack.
Enough to make a huge difference, who knows.. the OCZ support forums though the consensus seemed to be avoid compression for Sandforce drives.
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This is one reason why I think SSD storage needs to get away from the SATA standard and integrate better with the OS. SATA defines a block storage model based on head, sectors, cylinders, etc. Now, you have devices hiding compression, de-duplication, sector sparing (which is OK), background TRIM, etc.
I don’t expect the OS to know what is optimal for file system performance on these devices, but it makes it hard even for an IT guy to know - now I have to inspect every chipset on every drive to know what a good recommendation for utilization is. (Or simply accept the default lowest common denominator - treat like a regular SATA)
There’s got to be a better way when it comes to SSD’s - they aren’t really devices that fit the SATA model anymore.