VNX can NEVER be "spindle bound"
“Spindle bound”, huh?
Not so. FLASH changes that.
Now the controllers are the ones setting the limits for performance. The controllers in VNX can deliver 1M 8K IOPS to the hosts. That takes MCx™ and 32 cores to do. What the poster above does not seem to undertand is that in order to deliver 1M IOPS with “spindles” would take roughly 5,000 15K drives to do. At a latency of 9mS to 12mS and a power budget of 87.5kW. That is just plain NUTS! – And besides, the VNX platform only scales to 1,500 drive slots. Thus it is IMPOSSIBLE for VNX to be “spindle bound”. This is old school talk!
The world has changed. We now live in a FLASH world. To deliver 1M 8K IOPS to the hosts, with backend overhead of RAID, we would need roughly 160 SSDs. At this point, we have reached performance parity between the storage processors and the SSDs. We are NOT “spindle bound” at all (we can still add another 1,340 SSDs). The response time is now less than 1mS and the power budget has dropped to .5kW.
That is what we want: low latency, high IOPS and low power consumption. With FLASH + MCx™ VNX delivers that.
(and yes, I work for EMC)