VMWARE advise required

I did these

I did these but still VMs are slow

I have 2 servers with ESXI5.5  and 1 VCenter5.5
each host has 8 network ports. out of this 2 network ports dedicated for DMZ VMs. I. e. I have 6 NICs on each servers free.
I have HP MSA with 8 ports 4 ports from each controllers.
I have 2 dedicated SAN switches (Gogabit)
What is the best design to have HA on each layer?

I did these but still VMs are slow

where does it say that in your question ?

that's not the question that was asked was it ?

appreciate if you can guide me.
how to configure these NICs to have better performance
from 6 NICs I think we have to configure 2 for management network. how to configure the rest to have better performance.

appreciate if you can guide me.
how to configure these NICs to have better performance
from 6 NICs I think we have to configure 2 for management network. how to configure the rest to have better performance.

Please provide screenshots on your current networking vSwitches via vSphere Client

Attached Vswitch screenshots

Storage has 8 ports. 4portsfrom each controller (A1 to A4 and B1 to B4), All ports are mapped on all vdisks
A1 IP 10.10.10.20     B1 IP 10.10.10.21
A2 IP 10.10.20.20     B2 IP 10.10.20.21
A3 IP 10.10.30.20     B3 IP 10.10.30.21
A4 IP 10.10.40.20     B4 IP 10.10.40.21

What is the best practice to HA on NICs, Switches, storage and Hosts
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Your iSCSI and vSwitches is not set as Best Practice, but can work.

What is slow ?

Are your VMkernel porgroups set for Jumbo Frames ?

what is the best practice can be done with minimal impact?
I changed the MTU to 9000 but it seems slow more.
I reverted back to 1500

You need to ensure when using JUMBO FRAMES, that YOUR NETWORK is enabled for JUMBO FRAMES.

e.g. physical switch, and SAN.

Just don't go changing things at random.

What is slow ? compared to what ?

how many IOPS do you require in your VMs?

is this a new implementation, or old installation, hat comparisons are you making.

HP MSA what, how many disks, how are they configured, speed of disks, size of disks, RAID type

ALL these things can be a factor, WHY DO YOU ASSUME IT'S THE NETWORK?

How many VMs per LUN?

Size of VMs, what applications are running on the VMs?

As you can see so many questions UNANSWERED.

what changes can be done with minimal impact on the production vms

none!

changing networking puts all VMs of risk of outage.

New implementation or old ?

Old implementation. It is a production network.
Do you recommend to use 2NICs on 2 Vswitches or 2NICs on 1Vswitch with 2 active NICs?

if you referring to iSCSI see my EE Article, which you stated you had set it up like this which you have not.

So this HAS ALWAYS been slow!

or it's just got slower, and you still don't say WHAT is slow.

Your article says each 2NICs per Vswitch
https://www.experts-exchange.com/articles/9250/HOW-TO-Add-an-iSCSI-Software-Adaptor-and-Create-an-iSCSI-Multipath-Network-in-VMware-vSphere-Hypervisor-ESXi-5-0.html

Here says each NIC per Vswitch
http://www.vladan.fr/wp-content/uploads/images/networking-config-vsphere.jpg
What is better for me.

OS is slow I mean

Both will work, and once upon a time, it was common practice to use two vSwitch, and then a Best Practice is developed as per my EE Article.

So why do you think it's network ?

OS is slow I mean

I'm sorry, you are not giving me much to work with here.

and it's always been slow? for how long always, since implementation ?

For example if I want to delete 2 Vswitches and make it 2 instead of 4 with 2 NICs per Vswitch.
What about the IP addresses which is already assigned to SAN ports?
Will it communicate with the existing Vswitches ?
Or is there anyway we can add those IPs to communicate with those Ports?

If only 2 Vswitches will all the 4 NICs will be used or 2 active and 2 standby?

Drawing attached for your understanding.
Master_design.jpg

how many VMs do you have?

are do you really need 4 nics for iSCSI storage ?

was there a bottleneck with 2, you can still use 4 nics on a single vSwitch fo multipath.

As I said your current method works, but you still have not clarified what aspect is slow.

go back to this post

https://www.experts-exchange.com/questions/28947094/VMWARE-advise-required.html?anchorAnswerId=41606557#a41606557

To be honest with you I always create 2NICs for each VSwitch as per your article and add these 2 VMks to Port bindings.
This time the ex-admin did these setup. I want to change to 2Vswitches with 2NICs active. i.e. 4 NICs active. I am afraid to remove Vswitches as I am not sure of the impact on communication to storage.

any changes to your storage network, can have an impact.

For example if I change the stoatge IPs to same subnet of storage network will it work.
A1 A2 B1 B2 in the same subnet of Vswitch1 (i.e. 10.10.10.16)
A3 A4 B3 B4 in the same subnet of Vswitch4 (i.e. 10.10.20.16)
and add additional NICs to both Vswitch switches (i.e. Vswitch 1 and 4) as active.

This way possible?

Do you think this is correct?

What I have seen in reference provided by you(above) vMotion should have dedicated Vswitch with 1 or 2 Vnics
screenshot-vmotion-management.png

All services should have dedicate vSwitches are nics.

Management - 2nics (minimum)
vMotion - 2nics (minimum) - and created as per my iSCSI best practice article.
iSCSI - 2nics (as per my EE Article)

but, this is going off topic.

Many thanks