WEBVTT

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ever seen something advertised as hot swap and not been sure what that means i

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mean at first i thought it was an easy way of identifying really bad plastic

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surgeons you know swap your hot for something else that ah never mind that

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joke fell flatter than a botched breast reduction

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anyway what hot swappable or hot pluggable means in the context of

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technology specifically electronics is that a particular component is designed

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to be disconnected and even reconnected without powering down the rest of the

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system okay Linus so why would we want to do that well imagine for a second a

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world where you had to power down your cellular telephone every time you wanted

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to plug in your headphones and you know jam out to some tunes

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the kids would say and then upon completion of the jam out session turn

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your phone back off take the headphones out and then power it back on i mean

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it's ridiculous right so that's what it's for quickly changing out peripheral

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devices like keyboards mice and game controllers usb drives as long as you do

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it safely displays and network cables on personal computers for a much more

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convenient user experience or if you think much bigger than that it's also

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important to achieve the reliability that allows the servers that host your

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favorite websites and online services to provide nearly perfect uptime in an

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enterprise setting hot swap can be used on some pretty unexpected stuff dead or

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working hard drives can be pulled out of redundant arrays and replaced or

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upgraded on the fly with no data loss and in the case of redundant power

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supplies even a power supply for a server can be swapped out without ever

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shutting it down but not everything can be hot swapped and there are many things

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an interface designer needs to consider to make hot swapping safe mechanical

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interfaces need to protect the user from mashing his or her fingers or getting

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zapped and similarly the electrical design of the interface and the software

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needs to be resilient enough to handle being suddenly disconnected in the

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middle of operation some things aren't designed to work for hot swap but might

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actually work like sim cards for cell phones and older ps2 mice but others

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must never be hot swaps because it would result in an instant software error

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causing the system to shut down and possibly hardware failure examples of

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these sorts of things include system memory graphics cards and cpus but

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this might not always even be the case technology is always changing and some

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of the early concepts for the project are a phone for example suggest that we

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might even see components like batteries become hot-swappable

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also who knows i sure don't

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speaking of things i don't know i don't know what could be a better sponsor for

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movie the last book of which has been split up into two parts only one of

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which is available because you can just listen to the whole thing on audiobook

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because it's available already and that book is by suzanne collins

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which i'm supposed to say otherwise i don't do all the things i'm supposed to

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say so there mockingjay by suzanne collins anyway

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guys sign up at audible.com techwiki to get your free trial of their service

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today thanks for watching guys like the video if you liked it dislike it if you

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just liked it leave a comment if you have suggestions for future fastest possible episodes just like this one and

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i think we're pretty much done here