gCloud / GCE Disk Size warning - is it meaningful?

Question

When I create a boot disk with gCloud less than 200GB in size, I see this error:

WARNING: You have selected a disk size of under [200GB]. This may result in poor I/O performance. For more information, see: https://developers.google.com/compute/docs/disks/persistent-disks#pdperformance.

I don't, however, see the details about this 200GB size which it alludes to being at somewhere on the page at that url.

Should I care about this warning at all? I wonder is it is more of a ploy for them to make more money trying to encourage you to lease more space?

Note: I'm using a standard disk, not a solid state. My disk access performance which is of any concern is via MySQL with very small read / writes 99% of the time, and occasionally blobs in the range of say 1 to 100 MBs.

Answer 1

It looks like the documentation has shifted around a little, and the warning is out of date.

There is a section of the Block Storage page that explains the relationship between persistent disk size and performance.

We'll fix the URL in gcloud.