that sure sounds like forced flushing, everything "pauses" while array has time to distage some data to disk.  Open a ticket with support, they will give you instructions how to get the NAZ files (encrypted NAR file). They can give you a simple MiTrends report on how your array is doing. I would go that route before you start pulling more cables and doing a bunch of zoning. You might be driving your disks really hard, NAZ file will have that information.
Dear All,  I need some advice regarding connectivity for our storage unit. As you will understand i am a beginner in storage management so i would appreciate your understanding!  We have the following configuration at the moment:  - 1 x CX4-240 Storage unit  - 2 ESXi servers in a HA cluster (vSphere version 5.1 U1)  Currently our CX4-240 storage unit is connected as below:  SP A has 2 Fibre cables connected to our CISCO switch SP B has 2 Fibre cables connected to our CISCO switch  and on our ESXi servers:  ESXi1 has 2 FoE cables connected to our CISCO switch ESXi2 has 2 FoE cables connected to our CISCO switch    We would like to connect another 2 fibre cables (one on each SP) from the storage to the switch and then present the extra path to both ESXI servers. How do we do that? If i am not mistsaken on the ESXi side we just need to rescan the HBA adaptors but what needs to be done on the storage level? Do we need to manually register the new paths to each server?  Thank you in advance for your help  Charis
Storage network connectivity question