Alletra 6000 peer persistance and MC-LAG

[Convergo]

Hi, 

we have 2 DC's both with an Alletra 6000. both DC's have 4 esxi hosts per DC and datacenters are interconnected based on juniper switches (QFX).

In DC1 we have two peer switches configured for MC-LAG
In DC2 we have two peer switches configured for MC-LAG
so basically each datacenter has its own MC-LAG setup for connecting switches and servers that are able to use LACP. ESXi hosts and alletra is configured based on trunk and access ports.

Peer switch 1 of DC1 is connected via a high bandwidth port to peer switch 1 of DC2
Peer switch 2 of DC1 is connected via a high badnwidth port to peer switch 2 of DC2

On both DCs a MC-LAG is congfigured for both high bandwidth ports for iSCSI and replication traffic that is trunked on this MC-LAG ae100 configuration.

I can't verify if this configuration is supported, or that we should use dedicated intra datacenter connections between peer switches, so for example iSCSI1 runs on peer 1 over both DC's and iSCSI2 runs on peer 2 over both DC's. regarding the available bandwidth we may combine iSCSI and replication traffic over these two inter datacenter connections.

[Satish04]

Hi Convergo,

In some cases, combining iSCSI traffic and replication traffic on a shared MC-LAG may be a viable option.
Dedicated connections for iSCSI traffic across DCs (using peer 1 and peer 2) would be a safer choice, especially for workloads that are latency sensitive.
As an alternative, QoS can be implemented on the MC-LAG in order to prioritize iSCSI traffic if the bandwidth is sufficient.
Make sure the configuration is compatible with HPE and Juniper before proceeding.

Hope this helps.

Regards,
Satish

[support_s]

System recommended content:

1. HPE Storage Replication Pack 10.1.1 for VMware® Site Recovery Manager™ Virtual Appliance User Guide | Configuring HPE Alletra MP, HPE Alletra 9000, HPE Primera, and HPE 3PAR SRA Storage system for Stretched Storage

2. Array OS 6.0.x HPE Nimble Storage dHCI Deployment Guide for New Installations HPE Alletra 6000 Series HPE Nimble Storage Flash Arrays

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