The whole repository including ISOs is at rsync://rsync.altlinux.org/ALTLinux/ [125Gb as of 2007–09–24], parts of it are updated roughly daily. There are also distinct parts specifically worth mirroring, namely latest stable release (4.0) and current/unstable branch (Sisyphus). Overall picture is currently like this:
The “wholesale” location is here:
rsync://rsync.altlinux.org/ALTLinux/ is 125G as of 2007–09–24 including four releases (since 2004) and daily-updated unstable (Sisyphus/)
Latest stable release is here (uses hardlinks):
rsync://rsync.altlinux.org/ALTLinux/4.0/
Its ISOs are here (included in the above):
Updates are maintained here:
rsync://rsync.altlinux.org/ALTLinux/updates/ — ca. 3.6Gb as of 2007–09–24
Unstable branch lives at:
rsync://rsync.altlinux.org/ALTLinux/Sisyphus/ — 32Gb as of 2007–09–24 (incl. orphaned/obsolete which aren't usually needed)
TODO: add year-over-year growth rates observed, see archives
You might want to specificaly exclude known ancient (e.g. there is Compact/2.3 and Master/2.4 there, current releases published like 4.0/{Desktop,Server,branch} which really is more logical) — or too specific — parts of the archive:
and probably '*orphaned/*' although that's rather limbo than end-of-life for a package.
The corresponding rsync commandline addition is:
--exclude '*/GIVC/*' --exclude '*/Castle/*' --exclude '*/Compact/*' --exclude '*/Junior/*' --exclude '*/Master/*' --exclude '*/Mozilla/*' --exclude '*/OpenOffice/*' --exclude '*/unsupported/*' --exclude '*/obsolete/*'