-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Paul Gear wrote: | http://whirlpool.net.au/news/?id=1802 | | It was not a single failure - it was a dual failure.
Correct. The backup link failed the night before, and then the main link was cut the next day. As far as I'm aware, there are no major fibre cable owners in Australia that have more than two major links. It was unfortunate for Optus that both of theirs were cut at the same time. Of course, there's much conjecture floating around on why the backup wasn't fixed in a reasonable amount of time. To be perfectly honest, the truth will never be known. But the fact remains that in IT and communications, most people only ever cover for 1 disaster at a time (think of everything from RAID disks and tape backup to redundant phone and DSL lines). Nobody plans for two or more disasters at the same time. Whether they should or not is a totally different question, and often boils down to financial cost versus probability - should Optus put in a third line at great cost to their customers (who are the ones funding the cable rollouts, after all) in the once-in-a-hundred-years chance that both primary and secondary lines will be cut simultaneously? Those inconvenienced by the outage may say "yes", but I wonder if they would also say "yes" to a 20% hike in fees to cover the cost? Questions and events like these are why I don't work for ISPs, despite the many job offers. - -Dan -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.6 (GNU/Linux) iD8DBQFIfojFeFJDv0P9Qb8RAtzeAJ9oHCyl8KXdjp8wk5sOYTxp6AF6hgCcCKT5 bc9789MkRQx7GFgMl3l4n9g= =uVNF -----END PGP SIGNATURE----- -- ubuntu-au mailing list ubuntu-au@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-au
