UCS chassis uplinks recommendation

[Kassim Ismail]

Hi All,

We currently have a UCS B chassis with 4 blades & 4 uplinks to the FI 6124 (2 from each FEX). We are now looking to populate the chassis with 4 additional blades & was wondering if there is a best practise/guidance document on how many uplinks one should have with a fully populated chassis.

Thanks

Kassim

[Manish Tandon]

Kassim

It all depends on the environment and what degree of oversubscription are you comfortable with between the IOM and the FI.

As you are already running UCS, I would start by looking at the current utilization to begin with.

The 2104 is characterized by 8 downlinks (server facing or HIFs) and up to 4 uplinks (FI facing or NIFs).

A starting config can be either 1, 2 or 4 links i.e 2^x number of links for static pinning.

Within UCS QoS can be configured so you can specify min bandwith guarantee at the time of congestion.

If you just want to get a feel for whats out there, most of the time I have come across 2 links per side.

Again, what I have seen most and not a best practise/guidance by any stretch.

Thanks

--Manish