Enterprise:
I've dealt with Plesk since back in the early days. I wasn't extremly impressed with it then, nor am I now.
My Bias against Plesk comes from having to admin and run quite a few servers with a good number of domains on them. I can't really give numbers, but suffice it to say, enough that I know that it's not just one or two problematic servers.
Consistently, time after time, I've watched Buggy PSA updates drop. I've applied them and watched them break every server the update was applied to in the exact same way. Mind you, these are servers built exactly as SW-Soft prescribes with a few workarounds for extending the amount of traffic the servers can handle (Workarounds moreso for the OS to deal with the higher loads and increased traffic, than modifications to Plesk or the way it operates). Currently, if I roll out upgrades to the servers, I have to alot a couple of hours for repairs. Some upgrades only require minor repairs, some require extensive work. The "Autoupdate" button in the server portion of the CP is a Joke to anyone using FreeBSD. Please feel free to search through these forums and see this for yourself.
I like the product itself, but Support and Quality Control have been horrid over the past year or so. Bug reports *MIGHT* see a fix if you're lucky. As an example an issue I had with PSADump and Memory Exhaustion was reported about 9-10 months ago. It *Finally* was addressed in the 7.5.4 update. During that time, I had to rework the kernel on all of my servers to deal with shoddy perl code. Btw, that was one that I had to argue with their Support for about two weeks to get them to admit that it Just *might* be a problem with their code. After that, it dissappeared to their developers and I never heard a thing again. This is just one example of at least 5-6 that I can think of off the top of my head. The only time I even bother opening a ticket anymore is if it's an issue that can wait to get fixed. If it's mission critical, I dig in and fix it myself. It's the only choice.
As to why I'm a proponent of Cpanel, I'll say this. We have one Cpanel server as of this time. It updates itself nightly, never drops and never gives me any trouble. Security updates are done on a nightly basis (Unlike Plesks which might be bi-monthly if you're lucky), they install themselves and best of all, I've never once had a Cpanel update trash a box. From an administrative standpoint, this means that as opposed to spending 12+ hours during off-peak times patching plesk servers and then fixing anything that breaks, I can sleep and the servers will update themselves. THAT is worth it's weight in gold right there.
While I'm on the security kick, I'll mention the difference between Plesks Application Vault and Cpanels. Plesk Application Vault updates only come with updates to the entire platform. Which of course *Might* be every couple fo months. Now, when these updates come out, Plesk only updates the package sources, but doesn't touch any applications that have been installed. So you're gauranteed to always have old, vulnerable applications on a Plesk server. Currently there is no functionality for updating installed packages. Cpanel does this all for you on a *NIGHTLY* basis should you want it.
SU Environments. Plesk implenets SU_exec on Perl applications only. Consequently, if you have php script being abused, or a php driven site being hammered, there is *NO* way to track it down. Coupled with the previous application vault issue, and you have 800 clients with insecure applications which are probabally being abused by script kiddies and you have no way of tracking it down. A good example would be on all the last go-arounds with PHPBB. Running top on my cpanel box showed me which users viewtopic.phps were being abused and let me take care of them within a minute or two. I had to write some scripts to spider my /usr/local/psa/home/vhosts directory, search for Viewtopic.php scripts, check version information in the header of the file then chown/chmod as appropriate. That's not fun. It's time consuming and it's a PITA.
I could go on with my laundry list of problems and suggestions if you really want, but I don't think it serves a purpose at this time. Most of them have been brought up and discussed in these forums many times by many people, which is why I suggested taking a look through in the first place.
My support plan is 24x7 Ticket based support. We didn't purchase the phone based support due to the quality fo the ticket based support. Honestly, if you buy a clunker from the carlot, do you go buy a more expensive one from the same place and hope it works itself out?
I've been doing Systems Administration and Coding for about 10 years now on just about every OS you can think of including Solaris, MANY Linux distros, Free/OpenBSD to Win2k/2k3. I've assisted in the upkeep, maintanence and managed services for upwards of 3,000 servers, some remote most local and built several hosting companies from the ground up (Technical wise, not so much the biz aspect). I'm not a "noob" admin by any stretch of the imagination.
From what I've seen of Cpanel in action and Plesk in action, I've gone ahead and made the move to start offering Cpanel to our customers and Phase out Plesk. I've done the math and I don't see any way to do large scale hosting with Plesk, it's just too labor intensive to keep up and when you need the help, it's generally pretty shoddy in my expierence. I'm a big fan of automation, and due to the unreliability of the Plesk product and it's updates, I don't feel comfortable automating any aspect of PSA Adminstration.
I suggest you draw your own conclusions based on your own expierences and from the problems listed in these forums. This is going to be the best place to actually see and read about the problems that you can expect from Plesk. You'll read about other peoples support issues, time to resolution of said issues and the quality of the Support and the product itself.
Personally, I think if SW-Soft can get over the quality control issues with their software, it'll be a HUGE step in the right direction. I like the interface and the direction their moving in, but over the course of the past year, I've seen no big improvements, only minor bugfixes and the introduction of more problems. YMMV though. Anyway, my .02 has been offered here, I'm not sure what else I can really say. I'm not going to argue the quality fo the product with you as it doesnt' change anything and honestly, I've got better things to do. To the original poster, I'd suggest checking out the product on a trial basis if you can, and do the same with Cpanel. Play around with each one as they both have pros and cons over the other. If I had to chalk it up in short, I'd say that Cpanel appears to be a much more refined and production ready product than Plesk. Maybe down the road, this will change though, hard telling. =)
Edit: As to the size of your company, I could care less. I was curious how many of these boxes you have as I assumed not too many, and you probabally dont' have a "large" number of clients on them. Plesk is just fine if you've got a dozen domains on it, that's dandy. I put around 7-800 domains on each box and I've got quite a few boxes.
I'm in the business of Shared Hosting. It's not a value-add to other services my company offers, it's our prime source of revenue. As to being biased towards Cpanel? Yep, I imagine I am at this point, but only because of my expierences with Plesk. SW-Soft Virtuozzo support is solid however, and that's something I should have clarified. It's the Plesk department that is pretty shoddy all around. I've got nothing but compliments for the VZ Team.
Originally posted by EnterpriseIT
Voodo,
I do not host to the public on a huge level. We are a software development company and have developed solutions for international franchises and hosted them.
Our main focus is high end database solutions hosted on our servers and we needed somthing with easy functionality to Microsoft & Linux servers.
I am a 50% share holder and director in the company Enterprise IT so I've been involved in a technical level and a directors board level making decisions about this system.
I've been using Plesk now for 4 years and I love it.
Every product has it's up and downs. If you don't develop it don't complain as you are using someone elses product and someone has a vision for it which is not your own.
Voodo, if you like cpanel what are you doing here except putting down a great product?
You youself seem to be biased towards cpannel.
The size of my company again is none of your business nor how many customers I host. At the end of the day it could possibly (being that I own a national network engineering company and a Australia Wide Internet Service Provider providing DSL, ISDN & Dialup) be slighly bigger than yours.