Some of it, like random IOPS, spindle bias etc...was well known.
Well among implementers, vendors were mostly locked into the vertical scaling model.
I ran a SGI cluster running CXFS in 2000 as an example, and by the time EBS launched, I was spending most of my SAN architect time trying to get away from central storage.
There were absolutely new problems and amazing solutions by the EBS team, but there was information.
Queue theory was required for any meaningful SAN deployment as an example and RPM/3600 had always been a metric for HD performance under random.
Well among implementers, vendors were mostly locked into the vertical scaling model.
I ran a SGI cluster running CXFS in 2000 as an example, and by the time EBS launched, I was spending most of my SAN architect time trying to get away from central storage.
There were absolutely new problems and amazing solutions by the EBS team, but there was information.
Queue theory was required for any meaningful SAN deployment as an example and RPM/3600 had always been a metric for HD performance under random.
Not that everyone used them, but I had to.