Unless you buy the top end SS drives, and while they will be both silent and have almost no latency as compared to a normal drive, they are actually much slower throughput on average than a good mechanical drive.
One other myth surrounding SS drives is that they are lower power. Quite the opposite actually (unless they are dog slow of course). The faster their throughput, the higher the power requirements, easily eclipsing by a large margin the power draw of a 10K to 15K RPM SCSI drive.
The last myth is read and write cycles - a SS drive can only read and write so many times before you must throw it into the garbage for a new one. This number is usually around 1000 cycles, so you may never hit that, but there is the possibility to hit that.
I'll buy a SS drive when the price comes down and the power draw comes down. I do not need any extra heat generating devices in my case.
-S
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