what is a controller?
in VMAX world? is that an engine ? because the spec sheet on EMC's site says VMAX 40k tops out at 8 engines (same number as the original VMAX if I recall right)
Maybe you mean 8/16/32 physical CPUs ? because if each engine has 4 cpus and there are 8 then that would be 32 I think..
VMAX 40K ENGINE MAXIMUM SPECIFICATIONS
Four six-core 2.8 GHz Intel® Xeon® processors
Up to 256 GB of cache memory
Virtual Matrix bandwidth: 50 GB/s
PCIe® Gen 2 I/O interconnect
VMAX 40K SYSTEM MAXIMUM SPECIFICATIONS
Eight VMAX 40K engines
2 TB of cache memory
Virtual Matrix bandwidth: 400 GB/s