Connections iSCSI how much should I see?
Hi all
Also posted here - iscsi connections how do I see?-Spiceworks and here - communities.vmware.com/.../520622
Running ESXi 5.5 and a PS4100X Equallogic, hoping someone point me in the right direction on something I noticed.
Recently installed a MD3220i (https://community.spiceworks.com/topic/1114594-iscsi-port-binding-daft-question)
After start installation and connection iSCSI can be quite long (as expected by using binding with several subnets iSCSI ports) but my question is not related to this.
I came today to see what I can do to improve the time of starting, perhaps using static rather than dynamic discovery, and I noticed something weird.
The Equallogic we have 2 NIC, 10.11.14.1 and 10.11.14.2. When using dynamic discovery I enter the IP address of the Group (10.11.14.253) and I get 8 connections, one for each IP address on the ESXi hosts to each IP addresses on the equallogic, see screenshot iscsi1.png
Any fine.
If I then switch to static and put 2 entries in by the data store (one for each NETWORK card on the equallogic) (see the screenshot iscsi2.png) then what I see in the equallogic is 16 connections to the host. Each data store is connected twice for each NETWORK card on the host, everyone via network cards on the equallogic, see screenshot iscsi3.png.
I don't know if it's better or worse! I have several paths, so it should be better? Or I have many paths, and the system will get confused?
Thank you
Hello
The best option to avoid the delay is for something like the broadcom iSCSI adapter unloading. ISCSI S/W adapter would be bound to network adapters for volumes MD, (or bind something here and use several subnets rather) the unloading adapter would then manage the EQL triaffic. This prevents the long startup delay since all related network cards trying to reach the defined all discovery addresses.
I have never tried to use only addresses static w/ESXi, so I can't really talk about why you get the additional connections. Unless it still makes a discovery, or the old static entries were still there after you have changed static.
Kind regards
Don
Tags: Dell Products
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sensitive to the simultaneous loss of the original and the backup on many of
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