Curious to know what your deduplication rates are like. For us, the AFF is only getting 1.6:1, terrible. Only runs SQL Databases, which are all very very similar. We have a Pure device, same types of databases, close to 6:1.
Information about how random read performance was improved in Data ONTAP 8.3 was shared at Insight Las Vegas this week. Briefly, read data path what streamlined so that I/O is handled more efficiently with the end result being much higher IOPS throughput at a very low (~1ms) read latency. Note: This is a LATENCY improvement for higher IOPS, not an increase in the maximum throughput a controller can deliver at a much higher latency.
For more information about performance enhancements in 8.3, please consult your local field NDA presenter or check Field Portal when 8.3 RC1 is released.