Web Hosting Talk : Web Hosting Main Forums : VPS Hosting : How many VPSs could go on this server?

[Jobjob]

Hi Guys,

I realise that my question could easily be answered with 'How long is a piece of string' so please humour me and give me your best estimate.

I am curious to know what people think about how many VPSs the average host is putting on an individual server with the following specs:

CPU: Dual Xeon 2.8
RAM: 8192mb

Also when they say they guarantee 512mb ram, does that mean on the above server they would put no more than 16 VPSs on it? Or do they have some sort of load balancing in place that equals that amount of memory?

With Webfusion VPS I've heard contradictory numbers from their support...some say 65, some say 25 VPS per server for the following specs: (seems like a very high number even at 25 as the performance is terrible)

INTEL Pentium-IV x86 Family 15 Model 4 Stepping 1 ~2800MHz with 4Gb Ram

[WireNine]

65 VPS on that would be overloading I guess unless you are limiting them to 128MB ram only. It depends on the sort of plans you offer and how much cpu % and memory % you give with each plan.

[rghf]

Real world I would say you could get 40-50 on there depending on what they are doing

Rus

[netfreak]

I agree with 40-50. My experience has been with 10-12 basic VPS accounts on a P4 1.7ghz with 2gb RAM, all running just fine. It also depends on what level of power they're offering with the VPS. We use dual 1.7's in the higher end VPS machines, running 10-12 environments.

[hostingvince]

Originally Posted by KarlZimmer

We don't oversell any of the minimums. All the plans are calculated that if all the spots on the server are filled, and everyone is trying to use CPU/RAM at the same time you will get the minimum. Since that is rarely the case, as normally the servers aren't completely full and not all the users on them are using much RAM/CPU you will basically be able to always use more than the minimum.

http://www.webhostingtalk.com/showth...hreadid=454347

I doubt many actually adopt this method though

As I mentioned in that post, would like to see this type of statement as part of the TOS/SLA for each VPS provider that states they don't oversell.

- Vince

[cloudrck]

Like most people have said, it would depend on what they will be doing (i.e., what technologies, etc.) as well as your plans.

I would also have to say it depends on what VPS technology you plan to use, and whether it supports bursting or not.

[spookyfish]

I think ALOT depends on the disksubsystem. This is from own experience as well as from talking to other VPS hosts. A single disk (or two disk) ATA system does not in any way compare to a 14 disk 15krpm SCSI RAID array.

Considering the disk subsystem to be the bottleneck in todays server computing (memory and CPU speed no longer being a real bottleneck, or at least not the first) the choices there make all the difference.

So to answer your question in more detail: with (S)ATA disks 25 may well be a real world limit and well over 60 or maybe over 100 with a decent SCSI array with lots of disks.

[BeDifferentSolutions]

I am amazed people actually put 40-50 VPSs on those configs. That is called overselling in my opinion. Especially when you throw in CPs on to the overhead. Some VPS host do not oversell space or RAM. They allot based off the max hard limits. But like shared now, young guns trying to get market share in the VPS arena will grossly oversell and drop the bottom on pricing. SW Soft easily allows for overselling. So it nows open the market up to those who have no clue and have no issue with overselling on advanced hosting platforms like a VPS.

[slhost]

We are running a few dual 2.8 Ghz Xeons with 8 GB RAM on SCSI disks in RAID 10 configuration. We like to run between 30 and 40 VEs on this setup. How many VEs exactly depends on the actual usage of each account and of course how much of the physical resources are allocated. Your client is going to know if you're overselling because her site's response time is going to take a hit.

[layer0]

Originally Posted by UmBillyCord

I am amazed people actually put 40-50 VPSs on those configs. That is called overselling in my opinion. Especially when you throw in CPs on to the overhead. Some VPS host do not oversell space or RAM. They allot based off the max hard limits. But like shared now, young guns trying to get market share in the VPS arena will grossly oversell and drop the bottom on pricing. SW Soft easily allows for overselling. So it nows open the market up to those who have no clue and have no issue with overselling on advanced hosting platforms like a VPS.

I have to agree with you there.

On a box such as a Dual Xeon 2.8 w/ 8GB RAM I'd put no more than 20-25. But, of course I'm not a VPS host so I cannot really say this from experience.

[Jobjob]

Thanks for your tips guys. Much appreciated.