CyberNerd
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CCTV Storage 30TB - Your thoughts and suggestions please :-)
CyberNerd replied to lmgtfy's topic in Physical Security
Yes Sorry I was making assumptions. When we did our we also kept analogue cameras and found these were the best bet to cut down on space/traffic end do the encoding: AXIS M7016 Video Encoder | Axis Communications -
CCTV Storage 30TB - Your thoughts and suggestions please :-)
CyberNerd replied to lmgtfy's topic in Physical Security
Indeed, I was just reading it like it was a new system. -
CCTV Storage 30TB - Your thoughts and suggestions please :-)
CyberNerd replied to lmgtfy's topic in Physical Security
Quite a few people have now mentioned that the cameras should be doing the compression not the software. If they are the network usage per camera is tiny. It looks like you are having to spec a huge system because it is poorly designed, as the supplier mentioned;100 cameras being re-encoded on the fly probably won't work well on NAS. Get better cameras and this won't be an issue. -
We have a few 11e Yoga's and I must say they are absolutely bulletproof. About the best touchscreen tablet with a keyboard I've ever come across. The chromebook version is about half the price of the W8 one.
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CCTV Storage 30TB - Your thoughts and suggestions please :-)
CyberNerd replied to lmgtfy's topic in Physical Security
^ we found buying better cameras was the best compromise. A decent Axis camera will do the image processing on the device (motion detect), and encode it with h.264. It saves a huge amount of disk space and means you can get away with a cheap server (we have a centos box with 4GB RAM) and means NAS is now an option because the bandwidth is lower. -
CCTV Storage 30TB - Your thoughts and suggestions please :-)
CyberNerd replied to lmgtfy's topic in Physical Security
That is quite a lot. We have 25+ cameras, keep footage for 3 weeks and use about 2TB. Are your cameras continuously recording ? It might be worth reducing the framerate and set them to record on motion if you want to save a few quid. -
It looks like it is the net2 entry system: http://www.paxton.co.uk/docs/application%20notes/AN1127.pdf presumably they pulled some off the shelf components designed for IP Telephony - where IPV6 would be useful, just not so much on an RFC1918 network.
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We are also getting a paxton door entry system this summer. Guess what: I was also told we needed to support IPV6 ! It was hard to believe, but given a number of us have been told this I suppose it is true.
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Chromebook security - Lost or Stolen devices
CyberNerd replied to andrewr147's topic in Cloud Services
Not currently, the best we see is last logged in user and then cross reference that from the ip address listed in the audit trail from google docs. Not much help when the device is locked. there is an option to see the LAN address, again this is pretty useless for looking at locked devices.- 5 replies
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Chromebook security - Lost or Stolen devices
CyberNerd replied to andrewr147's topic in Cloud Services
in management console > device management > chrome devices > click and set to disabled. You can display a custom message: return to IT etc. ChromeOs is designed to be wiped - we even suggest the kids do it. As soon as it is wiped it is re-enrolled. If you set an enrolled device (chrome management > device settings ) force re-enrollment. it won't break the link to the management console, if you wipe it it will re-enrol.- 5 replies
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That clears that one up then!
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^ yes we could probably use fewer access points. Having more gives redundancy if an AP does fail and TBH it is more about the range than density.
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I have heard that argument before - mostly from non-meru people. The fact is that we have 1200 wireless devices on at any time, with 30 users in each classroom. They are all booted up, logged in and on the internet within 10 seconds. Many School's ICT suites can't achieve that. If that isn't a high density environment then I don't know what is! Notwithstanding a few driver issues for particular machines I really fail to see why it is an issue, infact I would go so far as to say it works REALLY well!
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Why is single channel dead? I don't understand because it works so well!
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Terminals V PC’s and Wired V Wireless - Whats the consensus ?
CyberNerd replied to sjpage10's topic in How do you do....it?
You could reverse that argument and say that if the thin client crashes the work is still saved. what is more likely to fail - desktop or server. I'd put money on it being a desktop. You can loose an entire room of thin clients and the work is still there. I run a pretty big thin client system and have done for many years. I've also seen other schools try it and fail. The failed ones usually comes down to the fact that it is harder to implement properly. Almost all of the problems listed here can be overcome. excluding heavy video editing usage which you will still need a fat client for. General rule is that if you don't know how to do it then stick to fat clients and invest your time there, or get some professional help. It's the little things like thinking one big powerful server is going to be better than a lot of diskless servers - it isn't!! Take a leaf from the Google/Facebooks and run many less powerful (and diskless ) servers. Network boot them too and have them run out of RAM so that you get no I/O bottlenecks. If you do decide then you have the advantage of: Apps that run in a browser over HTML5, much lower hardware costs (chromebooks for example), anywhere anytime learning, very simple administration. -
Virtual machines for students (Linux)?
CyberNerd replied to dagza's topic in Thin Client and Virtual Machines
IIRC they need root for OCR, or at least be able to create and delete users. -
Virtual machines for students (Linux)?
CyberNerd replied to dagza's topic in Thin Client and Virtual Machines
Koding: Web based linux virtual machines https://chrome.google.com/webstore/detail/koding/fgbjpbdfegnodokpoejnbhnblcojccal?hl=en -
Koding: Web based linux virtual machines https://chrome.google.com/webstore/detail/koding/fgbjpbdfegnodokpoejnbhnblcojccal
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Opensource or cheaper alternative to Dreamweaver
CyberNerd replied to zag's topic in Educational Software
Google Web designer is also worth a look (free): https://www.google.com/webdesigner/ -
Single sign in for teachers - anyone help?
CyberNerd replied to adgethi1's topic in How do you do....it?
Use the operating system login, then login to Chrome. You only need to do this once, but once it is done it will save and sync passwords between machines. Not a true SSO but it is very effective. -
Luckily Google have got some pretty good search capabilities in their tech portfolio, so they bundled malware/spamware detection into their gmail apps. They also bought postini which gives free content filtering, backups, security and auditing. It's been bundled with GAFE since about 2011.
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You'll need to either write one using the API, or use a service from one of the integration providers (who are busy writing them at the moment by the looks of things)
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Let me guess - RM topsliced too much money to pay share dividends, as a result the service sucks and schools are let down? but what do they care, they just bully bursars to think they can't change.
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If you want O365 to have similar functionality to GAFE you'll need Office and Sharepoint and a heap of powershell experience. O365 is more of a hook, GAFE is a product in its own right.
