Word of the Day Archive


July 27, 2012  2:06 PM

Write through vs write back

Margaret Rouse Margaret Rouse Profile: Margaret Rouse
“Apple’s Xserve RAID allows you to choose which is more important to you–performance or integrity. If you choose write-back cache for performance reasons, the Xserve RAID will default to write-through cache if it detects that it is running on the UPS. Switching to write-through cache assures that nothing will remain in cache in the event of complete battery loss.” — W. Curtis Preston

Today’s WhatIs.com Word of the Day is write through, a storage method in which data is written into the cache and the corresponding main memory location at the same time.

July 26, 2012  6:11 PM

After a failover, there has to be a failback

Margaret Rouse Margaret Rouse Profile: Margaret Rouse
“When preparing to return to your original office, test the systems and infrastructure to ensure they are working properly; ensure there is sufficient storage capacity to handle the returning systems and data; and ensure that sufficient network bandwidth is available for the failback.” — Paul Kirvan

Today’s WhatIs.com Word of the Day is failback,  restoring operations to a primary machine or facility after they have been shifted to a secondary machine or facility during failover.


July 25, 2012  2:59 PM

Decision trees

Margaret Rouse Margaret Rouse Profile: Margaret Rouse
“Unfortunately, many default settings on data mining and statistical software automatically create decision trees or rules sets that are preprogrammed to distribute the cases evenly. This can be a huge problem when dealing with infrequent events or otherwise unequal distributions. Another way of stating this is that the program assumes that the prior probabilities or “priors” are 50:50, or some other evenly distributed ratio.”Colleen McCue

Today’s WhatIs.com Word of the Day is decision tree, a graph that illustrates a decision-making process by listing every possible outcome as a branch of the tree.  (Usually the tree appears to be growing sideways.)

Decision trees are useful for providing team members with a common view of possible outcomes for discussion purposes — but they can also (gasp) be used to assign values to possible outcomes and actually frame what a decision’s consequences would look like.

MBABullshit has a good video illustrating how a decision tree might be used when deciding whether to sell lemonade or candy.

 


July 24, 2012  1:25 PM

Stateless app is a misnomer

Margaret Rouse Margaret Rouse Profile: Margaret Rouse
“Stateless computing isn’t about having no state. It’s kind of a misnomer. It’s about where that state is stored.”Jeffrey Birnbaum

Today’s WhatIs.com Word of the Day is stateless app.  A stateless app is an application that does not record data generated in one session – such as information about user settings and events that occurred — for use in the next session with that user.


July 23, 2012  7:04 PM

Is the future of RIM all about Balance?

Margaret Rouse Margaret Rouse Profile: Margaret Rouse
“The market for a mobility architecture might not be as large as one for a hot, new smartphone, but at least it’s a new direction that might work. It’s just a question of whether RIM wants to let go of device that it has so much invested in.”Shamus McGillicuddy

Today’s WhatIs.com Word of the Day is Blackberry Balance, a feature of BlackBerry Enterprise Server that allows IT administrators to deploy, secure and remove specific applications and data on BlackBerry smartphones.


July 20, 2012  2:26 PM

Cloud orchestrator – automating the private cloud

Margaret Rouse Margaret Rouse Profile: Margaret Rouse
“The orchestration software that drives the service catalog understands the processes required for each service listed in the catalog, as well what resources are available in the private cloud architecture to support it. When the user selects a service from the catalog, the orchestration system takes over, launching a series of automated tasks to allocate the server, storage and networking resources for the service.”Michael Brandenburg

Today’s WhatIs.com Word of the Day is cloud orchestrator, industry lingo for software that manages the interconnections and interactions among cloud-based and on-premises business units.


July 19, 2012  5:44 PM

Exchange Server 2010 database availability groups (DAGs)

Margaret Rouse Margaret Rouse Profile: Margaret Rouse
quotes and quotations “Some observers feel Microsoft is working toward making Exchange Server backups completely unnecessary. The idea is that Database Availability Groups will eventually make Exchange resilient enough that you won’t need backups.”Brian Posey

Today’s WhatIs.com Word of the Day is database availability group, a high availability (HA) and data recovery feature of Exchange Server 2010.


July 18, 2012  11:52 AM

App wrapping and mobile application management

Margaret Rouse Margaret Rouse Profile: Margaret Rouse
“There’s a lot to like about the idea of app wrapping. First of all, ensuring that encryption and authentication is present at the app level means that device level security is not nearly as important. So BYOD, managed or unmanaged devices—that all doesn’t matter. And with app wrapping, you can add security features to pre-existing apps.” — Jack Madden

Today’s WhatIs.com Word of the Day is app wrapping. App wrapping is a big deal in mobile application management (MAM) because it allows an administrator wrap a security policy around a third-party mobile app.


July 17, 2012  10:11 PM

Reach out and touch those new Metro apps

Margaret Rouse Margaret Rouse Profile: Margaret Rouse
quotes and quotations “Metro style apps are interesting because regular (classic?) Windows apps are NOT touch-based at all, instead requiring a keyboard and mouse.”Brian Madden

Today’s WhatIs.com Word of the Day is Metro apps — that’s what you’ll be shopping for once Microsoft officially launches their entry into the world of app stores.


July 16, 2012  7:50 PM

Ivy Bridge processor coming to a mobile device near you

Margaret Rouse Margaret Rouse Profile: Margaret Rouse
quotes and quotations “The new growth area for chips now is the smartphone market. Apart from people who play video games, the demand for better and faster computers has waned. In the smartphone market, however, that demand is massive.”Daniel Emery

Today’s WhatIs.com Word of the Day is Ivy Bridge, the code name for Intel’s third generation of quad core processors. The Ivy Bridge processors employ 22-nm (nanometer) architecture, a drop of almost 1/3 relative to previous chips.

David Emery explains why there’s so much buzz about Ivy Bridge


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