Dell S-Series Switch in a vSAN Stretched Cluster Environment

Hi PAP400,

Yes, VLT is the way to accomplish this and you would need to use two separate VLT domains. Stacking wouldn’t be recommended or possible depending on the switch model on OS9 across sites anyway. Is it just the management of two different VLT domains that you are wanting to avoid? Here are some resources for VLT configurations. Let us know if you have any additional questions. https://dell.to/3sFsUqJ

https://dell.to/32p8UOi

 

Thank you for the reply DELL-Josh Cr,

 

I've already had a look at that tech-resources and I see that the DELL/EMC S4112F-ON could be perfect for my purposes, but my dubt is about the only 3 uplinks ports and that's why:

1. I have 3 nodes in site [A] and 3 in site [B]
2. I can set a VLT-A for the 2 switches in site [A]
3. I can set a VLT-B for the 2 switches in site [B]

My question is about having a full-redundant L2 switching between the sites, and thus among the [2+2] switches, because this is what I should have in order to set a vSAN Stretched Cluster: isn't it?

So my doubts are:

1. Is it possible to have a VLT-C between VLT-A and VLT-B?
2. If point [1] is possible: how to accomplish it using only 3x40Gb per switch (i suppose that I need at least 4 uplinks per-switch...)
3. In order to implement what is desired, can I use a [QSFP+ to 4xSFP+ DAC] and thus remedy the lack of an uplink between the 2 intra-site switches? And how to accomplish this?

 

Thank you

 

PAP400

 

Thank you for your kind reply.

I think that a Spine & Leaf topology is a little too much complex for the purpose: I just need a simple redundant 2-site L2 switching for vSAN backend only.

Thank you again.

 

PAP400