Re: 10G stackabe lacp switches

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MJ;

I was looking at something similar, and reached out one of my VARs, and they recommended Netgear M4100 series switches.  We don't user any of them yet, so I can't provide first-hand experience.

On the subject of UTP vs SFP+; I'm told that SFP+ with DAC cables experience lower latencies than 10 Gig over copper.

Thank you,

Dominic L. Hilsbos, MBA 
Director - Information Technology 
Perform Air International Inc.
DHilsbos@xxxxxxxxxxxxxx 
www.PerformAir.com

-----Original Message-----
From: mj [mailto:lists@xxxxxxxxxxxxx] 
Sent: Monday, February 15, 2021 4:16 AM
To: ceph-users@xxxxxxx
Subject:  10G stackabe lacp switches

Hi,

Hapy to report that we recently upgraded our three-host 24 OSD cluster 
from HDD filestore to SSD BlueStore. After a few months of use, their 
WEAR is still at 1%, and the cluster performance ("rados bench" etc) has 
dramatically improved. So all in all: yes, we're happy Samsung PM883 
ceph users. :-)

We currently have a "meshed" ceph setup, with the three hosts connected 
directly to each other over 10G ethernet, as described here:

https://pve.proxmox.com/wiki/Full_Mesh_Network_for_Ceph_Server#Method_2_.28routed.29

As we would like to be able to add more storage hosts, we need to loose 
the meshed network setup.

My idea is to add two stacked 10G ethernet switches to the setup, so we 
can start using lacp bonded networking over two physical switches.

Looking around, we can get refurb Cisco Small Business 550X for around 
1300 euro. We also noticed that mikrotik and TP-Link have some even 
nicer-priced 10G switches, but those all lack bonding. :-(

Therfore I'm asking here: anyone here with suggestions on what to look 
at, for nice-priced 10G stackable switches..?

We would like to continue using ethernet, as we use that everywhere, and 
also performance-wise we're happy with what we currently have.

Last december I wrote to mikrotik support, asking if they will support 
stacking / LACP any time soon, and their answer was: probably 2nd half 
of 2021.

So, anyone here with interesting insights to share for ceph 10G ethernet 
storage networking?

Thanks,
MJ
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