I have not be able to find a way to check all tenants at once, but I did find a way to check them one by one for their quotas.
In the StorageGRID GUI, you can navigate to Tenants tab and sign into each tenant account. A new browser tab for the tenant user will open, and you can check the dashboard for the total storage used and the quota limit.
> Example that i've added gives a nice overview of usage per bucket OR per tenant, depends which script i use.
Do you use only Get-SgwAccountUsage or several cmdlets (e.g. also Get-SgwContainers)?
Are you the Grid Admin and also Tenant Admin?
I haven't used SG PowerShell much, but I think Grid Admins usually don't get into the details of a Tenant's accounts and buckets (unless Tenant Admins don't change their password in order to offload some of that mangement onto the Grid Admin). I think Cloud Insights works along those lines (that is, if you're the Grid Admin, you can see Tenants' usage; if you are a Tenant Admin, you can see your own users and their buckets) which is why it doesn't create a combined report, but I may be wrong about this.