Dear Philip

While we're not a hosting provider, we still do have a lot of experience with virtualization platforms. We are currently running ~150 vSphere and Citrix XenServer servers and we've played around with Xen, KVM and others.

Two things I would like to give as advice:

- Storge is often underestimated. With virtualization you'll need a lot more storage throughput and access speed than with physical machines. NFS/NAS/iSCSI arenot a good ideas and are not a replacement for a real SAN. - Networking and network separation is an important factor in virtual environments. You might keep an eye on that aspect as well.

Kind regards,
Viktor

On 04.05.2011 11:03, Philip Iezzi wrote:
Hi

As a small web hosting provider we are planning to switch from physical-only 
servers to virtualization. So far, our favorite virtualization platform is 
OpenVZ under Debian Squeeze. We might consider running Proxmox as host system 
but prefer sticking with plain Debian (even though the future of the 
OpenVZ-kernel is not guaranteed). Our main goals: hardware independency, 
reliability, maintenance (single kernel virtualization), power efficiency 
(reduce number of physical servers), cost.

We're looking for a Swiss hosting provider who is actively using such a single 
kernel virtualization technology. What's your experience with OpenVZ? How about 
resource separation of containers (VPS)? Have you got any experience running 
complete containers off a NFS-mounted NAS/SAN? How about performance in a web 
hosting environment with resource peaks on various servers?
We would greatly appreciate if anybody could share his experience with OpenVZ 
(or similar single-kernel virtualization) and get in touch with us for some 
consulting.

Thanks.
Regards, Philip

--
DATENPARK
Badenerstrasse 69, Postfach
CH-8026 Zürich

Tel +41 44 299 33 66
Fax +41 44 299 33 91
[email protected]   www.datenpark.ch

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