Messaging Gateway

I'm seeing both of my SMG's using > 1000 IOPS on a regular basis.  Is this normal?

This seems really high for a email gateway, especially considering our email volume (~200 mailbox users, our busier SMG is processing maybe 10K messages a day).

Both of our SMGs are virtual appliances with combined scanner and control center, are running v10.6.2-7, and have 4 vCPUs and 8 GB RAM each.

The SMGs are not just processing mail, they are constantly downloading the latest antispam rulesets, usually every 5 minutes. Each email triggers a reputation check and several entries are entered into the Maria Database as well as other tables.

IOPS is a completely subjective value and heavily relient on the hardware and even your network design. There is no reason to be concerned unless the SMG is reporting errors related to disk access.