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Achandler

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Everything posted by Achandler

  1. I worked in both, one SAN two controllers and 2 SANs. 2 SANs has the advantage or you can have effectively 2 server stacks running in different locations, so should there be a catastrophic failure in one area of the school, (fire, power cut, water) then effectively you coudl run off the 2nd location. In reality though most school networks would have a single central location where most links go back too, so although you may be able to continue operating, it would be on a vastly reduced capacity and for vital services only. The two SAN solution was already in place when I arrived. 2 SANs also really does need 2 locations, both with aircon and direct fibre links between them to make it even worth considering, which isn't practical in a lot of places.
  2. For the SAN directly, I don't think so. But depending on your backup routine you could use it as a disk for DPM to use and allow you to perform bare metal recovery on your servers, 8TB would probably have backups going back upto 2 weeks (depending on data). If you do go for one SAN, like I said check if it has 2 controllers, it will make the 1 SAN more, but obviously not as much as 2 SANs.
  3. Yes it is perfectly possible. If you get a SAN with 2 controllers then you have even better redundancy. Also have connections from the SAN and servers going through 2 switches, if your using iSCSI then this is easy. Then you remove the switches as single points of failover as well.
  4. If your school has the average intake then yes. If your school took only from the poorest 10% they it would be 57% of pupils wouldn't it? it depends entirely on the intake, maybe you should re-read my post, where I said 40%- 50% of our intake is from that poorest 10%. Some schools probably have 1-2% from the poorest 10%.
  5. Not true? Depends where you are. According to some sources (Frog research) "Only 57% of the lowest ten per cent of households with children, by income, have access to the Internet via a computer." Well if a school's student makeup is 40-50% pupil premium. That can equate to almost 25% of all pupils! It can be literally 100s of different households! The problem is probably worse in other more deprieved areas too. Anyways. This is off-topic now.
  6. It is very hard to establish IT is all areas of the school and in homework, when students may not have Internet Access or a computer/ laptop to use at home. Unless government is going to pay for every household to have an Internet Connection and a decent computer at home (which it won't) then you cannot put IT it all parts of a school in every school. Unless you want to make some students stay at the school later to do their homework, as they do everything out of school on paper.
  7. I get that schools get extra money for pupil premium students. But that money has to buy a huge range of things for them, and for a school with a few students on pupil premium, that is all well and good. As a school with nearly 40% of our pupils on pupil premium, the school would have to buy huge amounts of iPads to loan to students. iPads that would have to be replaced by the school over and over again. Some schools might have the money to buy extra iPads to "loan" to students, but suggesting pupil premium money that has some other big demands on it (school uniforms, and employing staff to ensure students turn up and stay in school), I can't help but think that although it may be beneficial to some students, pupil premium money has better uses.
  8. Sorry was a little bit busy yesterday. So most errors are when people are jumping between points, which as you say makes perfect sense because they are authenicating from a different IP. Your number of devices per AP shouldn't be an issue, I use to see about 900 across 35 points and there was no major issues with it, it wasn't a one to one iPad scheme or anything, mostly teachers iPads laptops and then students phones. I would be interested to see what happens when you have plugged directly into the VLAN with a cable because that woudl establish if DHCP and RADIUS is defintiely not the problem. As if your using the cable, the wireless points are beign bypassed.
  9. Your logs show a RADIUS login failures on a 192.168 address which is your default VLAN and has no radius server. Maybe this is part of the problem.
  10. What you say the connection is dropping, are they connecting then failing intermittantly then trying to reconnect or are they failing to connect to start with? Have you tried plugging a laptop into a port of a switch with is just on your 2nd VLAN to check that it definitely work perfectly (gets DHCP etc). I would expect that it would because you say yoru original network is also failing now. I assume your oriignal SSID also has no RADIUS server, so it won't be that. How many access points, do you have and what type are they? 700 devices could either be lots or not many depending on how many points they are across. To check if there is any cross network traffic, depending on if you have setup routing, which you probably haven't. Then you can simply check by putting a laptop on one VLAN (with an IP from the other), then trying pinging back across because you shouldn't be ale too unless you have setup routing. I would also be tempted to use wireshark briefly to look for errand packets.
  11. This would certainly work and I have done it to extend jsut 1 fibre. Personally I would get a firm in to actually join the fibre together to avoid having an extra join in the middle of the cable, mainly because it is the core fibres and I have seen ends fall off when moved, because they were of the glued variety and were so old the glue had given up. They would also test the cable for you, so you know they are all fine. Probably a days work, so would be probably £250+ if you get a reputable company with a proper fibre splicer.
  12. Have you tested having the 2nd VLAN not use the Radius server, to prove that connecting to the wireless and then getting an IP address is quick? To be honest if it is slow at this point, I would tend to think that there is an issue with DHCP, but it doesn't mean it isn't VLANed properly as you mgith have traffic from the wrong VLAN flooding this VLAN etc (more unikely but possible). It could also be the number of devices connected, is your DHCP scope definitely big enough? We use to use Ident by IP for our guest wireless, it was easier for actual guests. If you dropped your wireless to be done via ident by IP then you could test it, then more on from there.
  13. Your iSCSI IPs should defeinitely be on an entirely different range then the main network, using 192.168 is absolutely fine if your switches are VLANed off properly. Don't go changing them because the connections will fail. Our iSCSi for our Xen servers are on 192.168 but you can't ping them or go near them because they are VLANed off seperately.
  14. You said one of the classes were more difficult, so I propose you replace the computer in a different class then give the difficult class the one from the other class
  15. Replace mahcines in classes that desrve them and then give the difficult class the hand downs.
  16. I've doen the update this morning at 7am. So far there is no problems to report, although obviously people are only just arriving! With regards to other vendors, it happens with them all, this isn't the first and won't be the last time for CMIS. But SIMS has had similar issues in the past with updates being late or breaking things.
  17. We have used a car jack to lift a server cabinet full of servers as a "heavy duty" caster had exploded due to the weight! I woudl have a picture except it was my old cars jack so technically it wouldn't be the jack in question. I once use the jack to fix a door frame too while at university, though we had broke it first as well!
  18. They are ok, if the waste if dry (as in bone dry). Moist or wet waste is a blockage causer.
  19. I think you can only choose 1, so the bets you coudl do is add the ou=Users at the start of your current setup
  20. The problem with the likes of Hector and Spike, is over the years they changed colours and collars etc So it was a toss up betweent he two, though maybe i should have cheated.
  21. I didn't knwo the dog wasn't called Rude Dog though, so I jsut put Rude Dog, cos it's Rude Dog and the Dweebs. Who the hell calls a dog Clay!
  22. Number 2 is from the Dweebs, i remembered the show. Number 9 was the problem for me, I couldn't decide if it was from Tom and Jerry or from Looney Toons or some other show, there is a lot of bulldogs that look like that! I assumed that due to the fact the cartoon looked older, it was Tom and Jerry.
  23. Hi All Has anyone else been having massive issues with ParentMail recently. The support from then has never been good, they don't do as they seem to say they have. But lately you can't get through to the support at all, 40 minutes and still they haven't answered the phone, while listening to the usual dribble of a we are really busy message, which is frankly excessive loud compared to the hold music and full of useless information! It also has two we are really busy messages right after each other. It has been like this for over a month... As for filling the contact us form, thats not worth it either.
  24. Sent (though we had to ip dip with a coupel of the dogs)
  25. I was assuming he was going to use his deposit to do the work, hence get a larger LTV ratio to start with but then drop down through a remortgage. A lot of companies won't let you remortage after a couple of months even on the standard variable rates. This would be the only way to release any cash from the property potentially. You could even once in, do a small amount of work that adds value, and then get it revalued quickly afterwards. I am more then aware of the mortgage market and how it works, having moved multiple times and recently as well.
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