And what happens when the cloud service goes down ? we have seen AWS
going down, gogrid going down and Gmail going down.
I remember the last time GoGrid was down due to a BGP cache
corruption. In such an incident our
only choice is to go for Geo Redundancy. Its immaterial whether the
data is stored in a single computer
or a cloud storage what is important is to provide redundancy. Isn't
that the case ?
Building redundant cloud storage solutions which can be accessed via
open APIs is what we need. And not
simply any cloud storage.
Practically, this requires an infinite set of solutions even though
there is a finite number of failure points. The farther the
"interruption" is from me, the more choices I have about how to solve my
problem. In late 2008, we had an ice storm in our area that completely
eliminated all network paths out of here for >24 hours. No matter how
many ISPs I had contracted with, they either had no power, or no media
to provide service with/over. Satellite may have been an option
provided power was available.
Moving to a cloud infrastructure, from my perspective makes things
"better", but at an order of magnitude increase in cost because of all
the issues you have to deal with to make sure you can access the cloud.
When it's all local, you just need to deal with the power issue for your
location. A much smaller problem.
Gregg Wonderly
And what happens when the cloud service goes down ? we have seen AWS
going down, gogrid going down and Gmail going down.
Cloud computing is a tool, which can be used or abused like any other tool.
It is also a buzzword, which can be applied and misapplied like any
other buzzword. In the case of the MS/Sidekick/Danger screw-up, the
word "cloud" is, IMHO, being misapplied. A hosted service is not
necessarily cloudish in its implementation. As others have pointed
out, the Sidekick phone and service predates cloud technology by
several years.
Another interesting point to consider is whether anyone might have an
agenda in impugning cloud technology as the culprit in this mess. For
example, whose business model is threatened by emerging cloud-based
competition? Maybe those folks' anti-cloud invective needs to be
viewed against their evident interest in seeing cloud adoption
impeded. FUD, anyone? Similarly, let's admit that those of us on the
pro-cloud side have our own background agendas at play.
Bottom line: any computing configuration needs a backup strategy.
However, cloud resources are being applied (and will increasingly be
applied) to really huge data sets, for example clinical genomic
databases and assorted big-physics and astronomy databases, because
they're an enabler for new ways of investigating nature. This is, in
fact, a major frontier in science and cuts across many disciplines.
Backing all that data up is a big challenge. Which doesn't mean it
need not be done.
For those whose ventures are being deployed in the cloud but don't
involve terabytes galore, backup is a more tractable issue and
something to discuss with one's cloud vendor, and probably something
we should duplicatively perform ourselves. Though it's not a failure
of any cloud technology, the Danger/Sidekick mess has done us a favor
for spotlighting this necessity.
--Scott
Then why entitle this thread, "Cloud computing is dangerous"?
Computing is dangerous. Ignoring fundamental backup principles is
really really dangerous!!
As to trust: an excellent point. Blind trust is like puffing on a
trick cigar: everybody watching knows what's coming but it always
seems to catch the victim by surprise. Trust, but verify. What
provisions does your remote service employ for backup? What can you
do to dupicatively perform your own worst-case-scenario recovery?
> My issue with all the sidekick cloud debate isn't whether or not it's
> a failure of cloud computing. You can't blame a buzzword. Cloud
> computing isn't any single technology but instead It's a new way to
> market, manage, deploy and operate web centric software and
> infrastructure.
There are those who say cloud computing is heavy on the hype, but I
think it's more than that, and that itself is an interesting point
worth discussing. There are technologies which demarcate this thing
we call the cloud from old-timey web-based ways of doing things, and
they enable new applications, low-cost/low-viscosity ventures, all
sorts of good things that weren't possible before. Along the way,
some questions arise that need answering: backup, recovery, security,
etc. There have been whoopses, which is inevitable. That's progress.
> So I do agree it isn't a failure of cloud computing
Good, thanks. I wish the pundits would back off on that point, as it
grows tiresome.
> so much as a failure to build an adequate DR strategy among other things.
Few among us would disagree! Microsoft and their vendor made some of
the most fundamental mistakes possible in any computing
implementation. Hell, you want to add RAM to your PC: back the damn
thing up first. It's that fundamental. My kids know that much.
> This failure does in the most simple terms demonstrate a key problem
> facing cloud computing, you are trusting someone else to manage your
> data / infrastructure. But leading an argument by saying it isn't a
> cloud because clouds can't fail is ridiculous.
Agreed, though implementation of cloud principles is a step towards
improved data-safety and uptime, just as going from a single hard disk
to a RAID array can result in improved data-safety and uptime. But
I'd hope that no one would say that it's unnecessary to back up a RAID
array, utilize off-site archival storage for a RAID array, have a
recovery plan for a RAID array, etc. Meanwhile the benefits of cloud
technologies extend beyond improved data-safety and uptime, and that's
getting lost in the wash of commentary on this episode.
--S.
But leading an argument by saying it isn't a cloud because clouds can't fail is ridiculous.
Storage limitations are something that is easily, if not expensively,
engineered around. What I've had trouble with is the reliability of my
virtualization platform in regard to hardware and software. Running in
lock-step might be an option but, ignoring the experimental status, it
requires homogeneous machines.
This last part is critical because it hinders upgrades. This
significantly increases costs as companies must continue to deploy last
year's technology with last year's efficiency, and for those same
reasons destroys green computing efforts.
We won't see larger scale lock-step deployments until it can be proven
to operate reliably with feature-locked kernels on varying
subarchitectures.
--
Regards,
Eric Windisch
--
Regards
brd
Dr Bernard Robertson-Dunn
Canberra Australia
b...@iimetro.com.au
I need to understand what architectures are being contemplated for
whole-of-enterprise systems across internal and external environments.
These architectures need to cover enterprise wide issues such as
authentication, authorisation, application-to-application (some
internal, some external) integration, single sign-on, application access
auditing, updating/maintaining systems across multiple environments etc.
They also should cover NFRs like performance and availability.
I can understand how isolated or stand alone applications can reside in
a cloud, what I'm trying to understand is how integrated enterprise
applications, currently executing in a single (or at least totally
controllable set of) security and managed environments (such as the
enterprise's data centre(s) )
Rao Dronamraju wrote:
> Another source could be AWS. Since AWS is supporting VPC (Virtual Private
> Clouds) they must be supporting what you have asked. I am also very
> interested in knowing how AWS implements this. May be someone from AWS on
> this forum can help with this.
>
--
Regards
brd
I'll add another issue - latency.
Sidekick customers in the U.S. will have "most, if not all" of their
personal data recovered, Microsoft says.
Owners of the Sidekick cellphone lost their personal data, including
contact and calendar information, when the servers storing the data
crashed.
"We have determined that the outage was caused by a system failure
that created data loss in the core database and the backup," said Roz
Ho of Microsoft in a post on the T-Mobile Forums.
R/c