Adding older Gen10 simplivity nodes

[jlangmead]

Hi

What are the implications of mixing Simplivity nodes that have different capcity within the same cluster. These are the same generation (Gen10) but slightly older with smaller internal disks. Capacity isn't an issue wihtin the cluster so I'm really just adding these to increase availability (more cluster nodes) and increasing compute - and these hosts are now surplus to requirements so wanted to put them to good use. I'm running 4.0.1 on the OVCs within the cluster I plan to place these hosts into.

Will the federation allow these to be added and should I expect any alerts\alarms if I do choose to add them?

kind regards

[Rajini_Saini · Accepted solution]

Hi @jlangmead 

Best practices recommend that all nodes in the cluster are as similar in the capacity as possible.

You may also refer https://h20195.www2.hpe.com/v2/getdocument.aspx?docname=a00015996enw

Mixing of configurations is allowed with certain caveats:

•Mixing of processor generations requires configuring the cluster to support migration between processor generations. For VMware clusters, this means enabling Enhanced VMotion Compatibility (EVC) to the lowest common processor before adding newer processors. Virtual machines on this cluster will not be able to utilize processor features above this level.

•Mixing different drive configurations within-cluster results in unbalanced I/O performance.

•All HPE SimpliVity hosts in the cluster should be a similar size class (all small, all medium, all large, etc.).For the best experience and performance, HPE recommends that all members of a cluster be of a similar configuration.

regards,
Rajini Saini

[gustenar]

Hello @jlangmead,

Is your query on this topic resolved? Let us know if you required further assistance.  

[jlangmead]

yes - many thanks