server stack updates

We are planning to upgrade the XEN server stack sometime in the next two weeks.

Unfortunately this process will involve some down-time for all of our hosted clients.

The upgrade will take the current servers from XEN 3 series hypervisor to a XEN 4  series hypervisor and upgrade the underlying Linux kernel to the current Debian 6 provided versions. As part of the upgrade process we will distribute the new kernel modules to all XEN virtual servers.

The upgrade is driven by the desire to take advantage of the improvements that XEN 4 series hypervisors bring in terms of performance CPU, I/O and RAM and to enable some of the more stable and faster virtual devices and associated management features.

We will be contacting our hosted clients over the next few days to work out the best time for the outage .

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