risko wrote:
Hi,
We get throughput cca 300MBps. We expect something near 1000MBps with this disk configuration.
With the same test on 3 years older HP P2000G3 with 8 600GB 10k SAS disks in RAID10 or RAID5 we get throughput cca 500MBps (there is also a load of 20 production VMs on the P2000G3)
What is your FC connection? The 300MBps is not far off from what a single 4Gbps connection will get you. As a "Just to be sure" thing, check to make sure that the VMWare pathing is set to round robin and that you have more than 1 path available. I've had them randomly reset on me back to "last used fixed".
Also, with Storage vMotion, if you are going to the same set of disks internally on the 3PAR the VMWare throughput may be a bit jaded. Is this being measured at the array (via System Reporter)? It may be that if you are going by VMWare's measure you are only seeing half the equation, which is still not what it should be. If you are staying within the 3PAR VAII should be offloading a lot of that work and so it may not show up in VMWare's measurements, not sure on that. At any rate, I'd go directly to the array and see what it is saying if you aren't already.