Proposal to purchase new machines for OBF

Justification

It is imperative that we move to x86_64 so we can do better support of modern hardware
Need to upgrade to more modern kernels and OS
Propose to stay with CentOS (?)

A new machine to replace Portal which would be Xen enabled and virtually support mailing lists, web wiki.
A new machine to replace dev which would be Xen enabled? and support SVN, GIT(?)
Chris to insert price quote(s) and specs here

Decomission old machines, helps free up donated rackspace from BioTeam
Setting up worldwide mirrors for backup purposes (rsync scripts from the repository?)
- Our 2 most valuable components are src code and mailing list (archives and membership). Losing these or being down is a HUGE problem. Can we insure these are protected and redundantly preserved?
How can we balancing security, all volunteer sysadmin team, moderate latency in response to issues (due to all volunteer nature)

Latest and greatest src code tools - GIT/Mercurial, previously Trac was also requested.
- Has been problematic to support because we currently don't allow HTTP access to dev machine
- Can we setup NFS + httpd on separate machine with mirrored FS (read-only) or NFS(read-write) or other system?
How do we keep Wiki's up-to-date w software - better wikifarm support?