Hello.

I have about 200 'parked' domains. Using my 4GB VPS reseller panel, I wish to upgrade each to a 1MB website. (1-5 pages each.)

Then, I hope to resell several hundred more 1MB sites, mostly with email disabled.

Any problem to jam 1,000 domains onto one IP address?
Or should I set up 3 sub-reseller accounts, each with a separate IP and a maximum of 300 domains?
Or 5 sub-reseller IPs, each with a maximum of 200 domains?
Etc.

Also, at what point am I over-stressing my little VPS, and should get a true dedicated?

( :blush: Maybe already with 200?)

No problem with jamming 1000 sites one on IP. The only thing you should be worried about is SEO.
You are over-stressing it when the load is high and it doesn't respond normally, when it begins crashing / etc :)

:) Thank you Siropel!

Yes I know all about the SEO debate for IPs. What I don't know, I soon learn in a new debate...glad you recognize this is not the question here.

So...no 'technical' reason not to put 1000 sites on one IP...and...'maybe' a VPS can even run 1000 sites.

:blush: ...or nobody has been crazy enough to try...

If so, my current plan is 5 sub-reseller accounts, all with no customer service. (Forum help only.)

Main reseller 1: my own 10-20 main sites, 10-100MB
Sub-reseller 2: my own 50-200 1MB parked sites, no email, no CGI.
Sub-reseller 3: up to 300 x 1MB customer sites, no email, no CGI.
Sub-reseller 4 and 5: each having up to 50 x 10MB customer sites with email forwarding, Fantastico Deluxe, and optional dedicated IP.

(Any further upgrades will be on a separate host with whitelabel service.)

I also enabled these "tweaks" in my master Cpanel, mostly to improve security.

MAIL:
checked everything except 'mailman URLs.'
10 maximum emails per hour.
No CGI emails from 'nobody'.
Blackhole is default for new accounts.
NOTIFICATIONS:
mailbox usage, space usage.
STATUS:
Load average for red:
(My upstream host set to 2 but default is 'blank'.)
SYSTEM:
Allow SSL host if dedicated IP
Disable whois lookups