Improve introduction to storage sizing guidelines

From Rohinton Kazak in the #Documentation Slack channel:

Rohinton Kazak 11:59 AM
@here - I have this reference from the V3 docs - https://developer.couchbase.com/documentation/server/3.x/admin/Concepts/bp-disk-throughput.html - but it seems to be missing from 4, 5, and 6 ? has it been refactored to some other section?
developer.couchbase.comdeveloper.couchbase.com
Disk throughput and sizing
Couchbase Server decouples RAM from the I/O layer to enable high scaling.

12:00
and specifically on from this page ‘Disk size requirements’

Amarantha Kulkarni 12:02 PM
Here's the latest page: https://docs.couchbase.com/server/current/install/sizing-general.html

Rohinton Kazak 12:04 PM
Thanks, however I don’t see the ‘Disk size requirements’

Amarantha Kulkarni 12:05 PM
Requirements are on https://docs.couchbase.com/server/current/install/pre-install.html. Tagging @Eric Schneider for additional details on this topic

Eric Schneider 12:08 PM
@Roy the new documentation is much more comprehensive, and disk size requirements are now split out into each service and respect the nuance of many more storage-impacting factors. Check out the Data Service section.
New

Rohinton Kazak 12:22 PM
Understood however as a general introduction for the page - https://docs.couchbase.com/server/6.5/learn/buckets-memory-and-storage/storage.html, the contents of ‘Disk size requirements’ provide a nice introduction - with what ever additional clarification is deemed needed… and I think something of that nature is needed.