On 10/18/2009 0:38, John Williams wrote:
On Sat, Oct 17, 2009 at 8:36 PM, Julia Thompson<f...@zurg.net> wrote:
Er. In that sort of a situation, I myself would set up a RAID for storing
the data, *much* less chance for losing it.
RAID does not protect from rm -rf / , which (some variant of) is my
guess at what happened. Although now they are saying most of the data
is recovered, so maybe it got munged in a reversible way.
Any "cloud" service at this point is going to be tens, if not hundreds,
of servers. (Major services easily run in the thousands of servers, and
if you count "virtual" servers the biggest services are using millions
of servers already.) At this point any outage that is going to affect a
service as whole is generally going to be a lot subtler (and possibly a
lot "nastier", such an accidental viral infection due to an underlying
bug/exploit in the service) than a rm -rf /.
At least, assuming the system admins are doing their jobs correctly rm
-rf / to a single server is extremely unlikely to cause massive outage
or damage... (As a service gets large enough hard drives are expected to
fail randomly, and surprisingly frequently, and services should be
designed around that problem...)
--
--Max Battcher--
http://worldmaker.net
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