On 8/24/2011 11:23 AM, Andy wrote:
According to the specs for database storage:
"Random 4KB arites: Up to 600 IOPS"
Is that for real? 600 IOPS is *atrociously terrible* for an SSD. Not much faster than mechanical disks.
The underlying (Flash block) write rate really is terrible (and slower than most rotating disks).
The trick with SSD is that firmware performs all kinds of stunts to make the performance seen
by the OS much higher (most of the time !). This is akin to write-back caching in a raid controller,
for example, where much higher write rates than the physical drives support are achievable.