Hi everyone, I've just bought a Dell PowerEdge VRTX system 3 weeks ago with 25xToshiba PX04SVB096 harddrives. The system have two PERC8 Shared controllers installed and can be setup in Single or Fault Tolerance Mode. Best results currently is with Single Mode controller, Fault Tolerance Mode has a performance drop (even with "new" firmware)The SSD's should be excellent and it's possible to read more about them here: http://www.tomsitpro.com/articles/toshiba-px04s-sas-ssd,2-905.html?_ga=1.192722346.1078210542.1470492245The Dell PowerEdge VRTX system is brand new and all firmware is up to date. I've one Blade in the VRTX system running on local SSD's which have Windows 2012r2 installed (also tried with VMware with worse result)Dell recommends to set Read Cache Policy to No Read Ahead and it seems to give best result also. Write Cache Policy to Write Through. I see better performance with Write Back Policy!Using I/O Meter directly on the physical server i've done a lot of tests with these setting:0,5K, 16 Outstanding I/O, 100% Read, 100% Random0,5K, 16 Outstanding I/O, 100% Write, 100% RandomVRTX in Single Mode with 24 drives in RAID-50: Read: 79.736 IOPS and Write: 71.494 IOPSVRTX in Fault Tolerance Mode with 24 drives in RAID-50: Read: 43.779 IOPS and Write: 41.580 IOPSDell PowerEdge 730XD with PERC H830 RAID controller with 2x Dell Mix-Use SSD's (other cheaper brand then the Toshiba's) in RAID-1: Read: 102.046 IOPS and Write: 107.691 IOPSOn my own home PC with an "older" Samsung 850 EVO Desktop SSD I get in Read: 82.617 IOPS and Write: 75.317 IOPSI don't think i'm getting the result I should expect from this system, I mean should one Desktop SSD almost beat 24xEnterprise SSD's in RAID-50 or 2xDell SanDisk SSD's in RAID-1 outperform 24xSSD's in RAID-50.Currently have a case open at Dell, but here 3 weeks later we're not getting better results.I need to use this VRTX solution with 4xVMware vSphere servers to run a lot of VM's, so I need to be 100% sure before moving anything to this system.can everyone share what they think or what to test out?Hope to hear from anyone..