
	Where results make sense

Topic: Single point of failure

Related Topics

Shared nothing architecture

Teradata

Official Opposition

Network

Song Empire

Mountain rescue

Edwin Scrymgeour

House Party 3

Super Dollfie

Cuban

Charles Darwin

Edinburgh Review

Wallace

Dollar Tree

Pilot officer

In the News (Tue 24 Nov 09)

Northern Trust

Marvin Harrison

Peter Chernin

Gary Locke

Match Play

Penelope Cruz

Mickey Rourke

AR Rahman

Danny Boyle

Hugh Jackman

	Single point of failure - Vanuatu's satellite link
		The failure of the Intelsat 804 satellite continues to cause significant problems throughout the Pacific region, particularly among the small island nations.
		The answer is to remove single points of failure wherever possible.
		Single Points of Failure are a liability in every system.
	www.news.vu /en/news/national/050128-single-point-of-failure.shtml (779 words)

	Visions, The Online Journal of the Art of Magic
		These single points of failures within the effects increase the power of the effect if the audience can be made to believe that, at that point, everything is exactly as they perceive it to be.
		That single point must be the focus of the most time and energy because, without due diligence, the effect goes from good and strong to bad and weak in a flash.
		This effect has a single point of failure: the thread on which the bill resides during the levitation itself.
	www.online-visions.com /oneeyeinward/0201pointoffailure.html (1251 words)

	The Workflow Application Architecture
		While the failure of the mainframe represents a substantial loss of computing power, it is balanced by a high level of maintenance.
		Unlike the mainframe, only a single user will experience a loss of computing, although the direct loss of the transaction may be felt by others.
		With this course-grained parallel architecture, the redundancy required for removing single points of failure can be developed.
	www.ibisl.com /16.htm (1320 words)

	Visions, The Online Journal of the Art of Magic
		These single points of failures within the effects increase the power of the effect if the audience can be made to believe that, at that point, everything is exactly as they perceive it to be.
		That single point must be the focus of the most time and energy because, without due diligence, the effect goes from good and strong to bad and weak in a flash.
		That single point of failure has to be removed as much as humanly possible.
	www.xmission.com /~zerowc/oneeyeinward/0201pointoffailure.html (1251 words)

	[No title]
		One of the key points is "state should be maintained only in the endpoints, in such a way that the state can only be destroyed when the endpoint itself breaks"; this is termed "fate-sharing".
		Note that this latter type of failure is more severe than the failure of a router; when a router recovers, any communication that it had been forwarding previous can continue to be successfully forwarded through it.
		People are trying to connect multiple machines through a single access line to their ISP and have been willing to give up some functionality to get that at minimum cost.
	cnscenter.future.co.kr /resource/ietf/rfc/rfc2993.txt (8767 words)

	SPOF: Single Point of Failure
		Single point of failure(SPOF) is a generic phrase for any component of a system that upon failure will cause a malfunction in the entire system.
		A SPOF can be a hardware or electrical component or a software component.
		This can be as simple as a process failure or as catastrophic as a computer system crash.
	www.javvin.com /softwareglossary/SPOF.html (55 words)

	docs.sun.com: System Administration Guide: IP Services (Site not responding. Last check: )
		Failure Detection – Ability to detect when a network adapter has failed and automatic switching (failover) of the network access to an alternate network adapter.
		After a failure is detected, failover of all network access occurs from the failed interface to another functional interface in the group.
		When failure is detected in one of the network adapters in the multipathing group, all network access is failed over from the failed adapter to the working adapter in the group.
	docs.sun.com /app/docs/doc/806-4075/6jd69oal0?a=view (4615 words)

	Reliable system design in TutorGig Encyclopedia (Site not responding. Last check: )
		Thus, the components mentioned above are single points of failure for the PC, but not for the larger system of which the PC is a component.
		A network where power feeds, network connections, routers, and router interconnections have all been correctly made redundant can still have a single point of failure if both routers are housed in a single rack, allowing a single spilled cup of coffee to take out both routers at once.
		Even eliminating every conceivable single point of failure is not by itself enough to make a system truly resilient, as the extra redundancy may make the system vulnerable to Byzantine failure modes.
	www.tutorgig.com /ed/Single_point_of_failure (494 words)

	What's a "single point of failure", and why do I need to know? - Ask Leo!
		A "single point of failure" is, to oversimplify a little, any single piece of equipment that, if it fails, can bring your entire operation to a halt.
		You may not realize how many single points of failure you have, but it can be kind of surprising.
		But also worth noting is that a single point of failure can be a source of cascading failure.
	ask-leo.com /whats_a_single_point_of_failure_and_why_do_i_need_to_know.html (1097 words)

	d2r: ((no single == many) && (no single != no)) point(s) of failure
		Pretty quickly, as evidenced by this slashdot thread the questions over how the days of "no single point of failure" are over started to pop up.
		That is, the fact that packet-switching means "no single point of failure" doesn't mean that there are no points of failure at all.
		ARPAnet, however, never qualified as a failure-proof network, and the points of failure were few enough that "no single point of failure" had little meaning.
	www.dynamicobjects.com /d2r/archives/002829.html (719 words)

	Single point of failure ...
		Point of failure is depend on How you configure your ASM and disk groups.
		I have a question, but rather than start a new thread, I thought my question might be most closely related to this thread, because I'm trying to relate Oracle's "single point of failure" guarantee to disk arrays.
		The problem that I foresee in the current storage design is that the logical volume becomes the singe point of failure and that the data warehouse will be unuseable and unrecoverable if ANY of the 14 disks in the single logical volume fails.
	forums.oracle.com /forums/thread.jspa?messageID=2049548&tstart=0 (612 words)

	[No title]
		The routing table to avoid single point of failure is described in Tab.
		Single point of failure in SCTP One of the reasons behind the SCTP standardization is to increase the redundancy of a level of the transport protocol.
		In summary of this section, we have described IP layer's modifica- tion, which is required to avoid "single point of failure".
	www.faqs.org /ftp/internet-drafts/draft-toshiyuki-path-sctp-00.txt (2085 words)

	Single Point Failure
		At one point during the inspirational portion of his speech, he quoted the industry-standard line that 70/80/90% (I forget the exact number he used) of all accidents are caused by rider misconduct or equipment misuse.
		The industry greeted his statement with applause, and it was clear from the flow of the speech that this was his intent.
		Parents need to learn how to recognize and avoid the industry-standard single point failures that bring profit to amusement parks and suffering to so many families.
	www.saferparks.com /saferparks_agenda/editorials/single_point_failure.php (1484 words)

	The Joel on Software Discussion Group - What about blades?
		There's ALWAYS a single point of failure (I know that's not 100% true, but most of the time, it is).
		Most good setups don't have a single point of failure, usually multiple web servers with different interfaces, and a master-slave DB is pretty good.
		Yes, the chassis does become a single point of failure all 6 servers, but if the organization is large enough to need several sets of blade servers, then that single point is eliminated also.
	discuss.joelonsoftware.com /default.asp?joel.3.73121.9 (723 words)

	Spartanburg SC \| GoUpstate.com \| Spartanburg Herald-Journal (Site not responding. Last check: )
		engineering any remaining single points of failure to whatever level is necessary to reach the system specification.
		A network where power feeds, network connections, routers, and router interconnections have all been correctly made redundant can still have a single point of failure if both routers are housed in a single rack, allowing a single spilled cup of coffee to take out both routers at once.
		Even eliminating every conceivable single point of failure â” a so-called shared-nothing system â” is not by itself enough to make a system truly resilient, as the extra redundancy may make the system vulnerable to Byzantine failure modes.
	www.goupstate.com /apps/pbcs.dll/section?category=NEWS&template=wiki&text=Reliable_system_design (458 words)

	Nics and Switch - single point of ...
		I've done a few RAC installs on blade chassis and for the cases where we only had 2 NICs, we just resolved that a NIC failure is essentially a node failure.
		I'm definitely a fan of lots of redundancy and RAC environments are usually critical enough to require a lot of redundancy.
		We have an Oracle RAC 2 node cluster with a single NIC (i.e point of failure) for interconnect.
	forums.oracle.com /forums/thread.jspa?messageID=2181750&tstart=0 (862 words)

	Single Point of Failure - DNSstuff Forums
		The "single point of failure" is a warning.
		The single point of failure warning does not refer only to the server itself.
		DNSReport continues to flood users with bogus "Single Point of Failure" alerts, which is just plain silly, since this test could be readily turned off, solving the problem for everybody.
	member.dnsstuff.com /forums/showthread.php?p=14731131 (1304 words)

	Re: ASM is single point of failure ?
		Re: ASM is single point of failure ?
		: Mladen Gogala: "Re: ASM is single point of failure ?"
		: tonions_at_medquist.com: "Re: ASM is single point of failure ?"
	www.orafaq.com /maillist/oracle-l/2006/05/07/0353.htm (238 words)

	The Old Joel on Software Forum - Single point of failure
		Thirdly, and I think that is is the core point, redundancy is a very cheap way to get the chance of system failure to very low levels.
		If the chance of a failure for a component is 1/1000 for some period of time then the chance of two failing in that period is 1/1000000.
		Finally a system is only as strong as the weakest link in the chain and single points of failure are invariably the weakest links.
	discuss.fogcreek.com /joelonsoftware/?cmd=show&ixPost=28896 (893 words)

	Wallet = Single Point of Failure « notgartner
		I wasn’t too worried about my credit cards or my key cards, it was all about whether I would be able to get onboard my flight at the end of the day (although granted, it would be hard to pay for a taxi in Sydney without any cash/credit cards).
		Wallet’s are a single point of failure, and the fact that they are easily misplaced makes them a particularly unreliable component - which makes it much worse.
		I would happily go to a series of embedded chips which were impossible for me to lose just to avoid the stress caused by misplacing identification cards.
	notgartner.wordpress.com /2007/07/08/wallet-single-point-of-failure (680 words)

	VMTN Discussion Forums: What about the "single point of ... (Site not responding. Last check: )
		Eh, going back to it a bit - I mean to say that the single point of failure problem exists on the virtual machine server itself.
		You are right, the ESX server is still a failure point, but having 20 VMs on one server doesn't increase the chance of a failure, it increases the severity since you have multiple systems going down at the same time.
		It depends on what your SLAs are, but the downtime due to a hardware failure of an ESX server can be greatly reduced because of the portability of VMs (easy to move from one physical server to another regardless of hardware), and how quickly they start.
	www.vmware.com /community/message.jspa?messageID=376978 (1349 words)

	Points of failure?
		d2r makes an excellent point about the net - the packet switching layer may be nearly invulnerable, but that says very little about the parts of the net that we actually care about as users.
		Originally, name resolution ocurred by matching names against the contents of the local hosts table (stored in /etc/hosts) and when a new host was added a new hosts table was propagated across the participating hosts.
		Example: Single point of failure was when someone at Network Solutions kept hitting 'continue' in warning dialog boxes a while ago.
	www.cincomsmalltalk.com /blog/blogView?showComments=true&entry=3265395906 (530 words)

	Single Point of Failure ERROR - www.DNSstuff.com Message Board (Site not responding. Last check: )
		ERROR: Although you have 2 NS records, they both point to the same server, resulting in a single point of failure.
		You are required to have at least 2 nameservers per RFC 1035 section 2.2.
		FAIL Single Point of Failure ERROR: Although you have 2 NS records, they both point to the same server, resulting in a single point of failure.
	forums.dnsstuff.com /tool/post/dnsstuff/vpost?id=1361432 (937 words)

	RAID, NAS, and SAN Data Storage Solutions - SCSI RAID, SATA RAID, 4Gb Fibre Channel, iSCSI RAID, RAID 6 Arrays - ...
		This “No Single Point of Failure” design in the RAID storage architecture is accomplished by utilizing a pair of RAID 5 systems that are each connected to a server that supports host based mirroring.
		This configuration also withstands the failure of a bus since there are two RAID arrays connected to each server via separate buses.
		It is a wonderful capability that also provides the ability to have “No Single Point of Failure” in the entire environment when combined with RAID 15 storage.
	www.winsys.com /whitepapers/15.php (1205 words)

	Grouchy Old Cripple: Single Point of Failure (Site not responding. Last check: )
		My friend Brian has been in town the past two weeks and he laid all the cables for me. Even though I did the original hardware configuration, I was not involved in the cabling so a lot of it wasn't labled.
		But talking about a single point of failure is one of the reasons that I am an atheist.
		The spinal cord is a prime example of a single point of failure.
	www.grouchyoldcripple.com /archives/000735.html (1037 words)

	From The Northern Edge Of Microsoft : Bad Water and Office 2.0 - The Single Point Of Failure
		Single point of failure is not a new concept and is not limited to Web 2.0 / Office 2.0 by any means.
		4) They both have a single point of failure (for one it is the network, for the other it is water)
		the single point of failure made sure of that.
	blogs.msdn.com /mark_relph/archive/2006/11/17/bad-water-amp-office-2-0-the-single-point-of-failure.aspx (318 words)

	Firewall Architectures
		Moreover, since routers are primarily designed to route traffic, the default failure mode on routers is usually to pass traffic to another interface.
		The gateway still provides a single point of failure - if anything were to happen to an individual service on the machine, such as a DNS server crash or a flaw in the Web server, then the entire Internet connection could be shut down or compromised.
		Rather than a single gateway, as in the screened host gateway approach, however, the functions of that gateway are spread among multiple hosts.
	www.invir.com /int-sec-firearc.html (1103 words)

	CFXHosting - Advanced Hosting Solutions for Macromedia Developers
		This cluster of servers is seen by the outside world as one logical server, such that failure of one server does not result in loss of service.
		An array of physical disks can be set up so that failure of one physical disk does not cause server failure.
		However, on most servers there is still a single point of failure where the electricity enters the server.
	www.cfxhosting.com /DedicatedSolutions/ManagedServices/DisasterRecovery.cfm (422 words)

	Search Done Right » Blog Archive » Achieving High Availability in Enterprise Search
		As organizations roll out search applications to end-users in order to provide a single point of information access, a funny thing happens - users become reliant on it and expect that search will be always “on” - just like it is on the web.
		We have had many hardware failures (disks, routers/switches), network failures, power outages with dead UPSes, etc. Most of these problems would have brought down the application if was located in only a single location using only a load balancing switch.
		The most interesting points for me, and probably most techies reading this, are the non-obvious flaws in the ways we might think to do things ourselves with scripts, hacks, etc. to overcome limitations in software we don’t control.
	searchdoneright.com /2007/02/achieving-high-availability-in-enterprise-search (1800 words)

	Nabble - SpamAssassin - Dev - [Bug 5715] New: eliminate sa-update single point of failure (single uri for MIRRORED.BY ...
		Summary: eliminate sa-update single point of failure (single uri
		I'd like to eliminate the only single point of failure in sa-update...
		I would split on multiple whitespace instead of a single space.
	www.nabble.com /-Bug-5715---New:-eliminate-sa-update-single-point-of-failure-(single-uri-for-MIRRORED.BY-file)-t4768201.html (549 words)

Try your search on: Qwika (all wikis)