VPS packages can be had for far less than a dedicted server.
I assume then you mean why pick a expensive VPS over a low end dedicated server?
Simple: Quality of hardware.
A portion of a higher end system, can be more reliable/powerful, than a full lower end dedicated server.
Not to mention immediate virtual reboots, repairs, and restores are one slick feature...
Ah, I see. So you're saying that a VPS on like a Duel Xeon 3.0 with 6-8gb RAM is faster and better than a server you could get for the same price with 512MB RAM and a Celeron 2.0? Also, what does it mean when you have "burstable RAM to *insert number* mb RAM"?
Right, that could be the case...
Possibly not faster maybe, but more reliable.
Most VPS machines have raid drive configuration, redundant power supplies, etc.
Your run of the mill $99 dedicated server does not.
Burstable means, you are guaranteed a set amount, but are able to use more based on what the system has available at the time, up to a certain point.
How much will a dedicated server who allows you to have
- up to 2GB of ECC memory
- up to Dual XEON CPU 2.8-3.2 GHz
- RAID 5 SCSI3 10000-15000 rpm drives
- server-grade servers
For a fraction of a cost, you get all this in a VPS. Or for the same price, you can get:
- generic low end PC-turned-into-server server
- slow IDE drive (5400-7200 rpm)
- no RAID
- weaker/slower CPU
- low grade non-ECC memory
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What will you be using your VPS for?
The performance of a VPS also depends on how many people are sharing that particular server with you. If your DC puts you on VPS that is shared by many, this will cause poor performance. All it takes is one client on the VPS to ruin it for others by over-using the resources. Be careful...