mjs_mjs

The x32 core might be perfect for many - for input channels you'll want gates and compressors, and you'll need to know about gain structure. Allen and heath did some smaller 1u rack mount mixers, or matrixes that would have been perfect for this type of thing. Soundcraft also have some cheap offerings packed with features. (Soundcraft Ui12 - Thomann UK) Gates are like auto switches, when set up correctly, they can MUTE a channel if there is no audio coming through. if you get the threshold and release times correct, they can be a life save. For pc audio and other fixed gain channels, set the threshold to -30db of the nominal sound and the hold and release time to 5sec to start with. As fast an attack as possible. For vocal channels it's more complicated. You want it gate out background noise but be high enough so that the little girl with the weak voice will open the gate.... it's a tricky point to find (if it's possible) for a set and forget situation. if you have a mute switch on the microphone (or a squelch on a radio mic) then set the threshold as low as possible. Set the hold time to a few (maybe 3) seconds and the release time to 3secs as a starting position. The mixer will show you when the gate is open, holding and when it's releasing, so you'll be able to work out what needs changing. Also, you'll know the threshold point is too high if they sound like they are getting cut off and interrupted while talking. If you're lucky enough to have a side chain, set the hipass to 160 and the lopass to 2k to start with. Compressors are like limiters, and for the purposes of this treat them the same. Set the threshold to the point you define to be loud enough for PC/line, with an infinite ratio, super fast attach and a release of 40ms. play one of your favourite tracks if it sounds like the volume is pumping then the settings are wrong and try again. For audio it's tricky to get a one size fits all, but get your head or someone to talk normally, and bring the threshold point down so they just enter into it - set the ratio to 6-8:1, fast attack, with a release of 10 times that. Then move the threshold up 3db. Now get them to talk normally and also to raise their voice. They should be able to talk normally without the compressor coming in, but when they raise their voice, it should go into compression. This limits the signal to the system from that mic input. again - if they sound pumping - go back and fiddle. If possible, get both male and female, tall, short, get someone from science who understands long complex words to give it ago, as well as the loud and quiet members of staff.... They're are many youtube video's on how to do gain structure. If you have a graphic and time, grab a laptop, install 'Room EQ Wizzard' and find the room resonances and feedback points and remove these in either a house graphic or the mics parametric(s). To be honest, this kind of system tuning is done alot better by an audio engineer... in reply to the original post - Sennheiser do some rechargeable mic's which are half decent for this kind of thing, (i used to look after them while i was at a uni (as tech staff)).

if you can - live boot into ubuntu on a usb or live CD and see if that picks up 4/6, that'll narrow down the hardware/software issue. but if the bios is seeing 4 then it's likely hardware related. Are both ram modules the same spec?

What do people think of the TP link switches from CPC and a few other places. I've had some running at home now for some time running very well. But what about when pushed? do they preform just as well there?

If you're feeling up for a challenge and seeing if it makes bugger all difference, you could create a storage pool on the Host using the SSD and spindles, then sit your VM's inside that - https://blogs.technet.microsoft.com/askpfeplat/2013/10/20/storage-spaces-how-to-configure-storage-tiers-with-windows-server-2012-r2/ i'm not sure how well it'll work for a VHD but i know for storage servers it can make a bit of a difference.

Silly Question - but do you really need a site to site? If you're only standing one server up, why not just get that server to VPN into your network. And likewise the other way round. This means that both schools networks are isolated also (as you can route all traffic over the VPN tunnel).

Sorry for resurrecting an old thread but what did you use in the end? I'm looking for a new tester that needs to be able to test gigabit speeds. Any suggestions? (cheap as possible is better, and i dont mind software based)

There are a few technical differences : SAS uses the SCSI command set to control the drives where as SATA uses the ATA. The SCSI command set has more features for enterprise storage. SAS also have A and B ports meaning a drive can be accessed by two controllers in a redundant configuration, or use multipath tech. For workloads such as DR where you write constantly for extended periods of time, you probably wont see any difference in speed, and the cost performance benefit means the SATA drive probably preform better for the cost. For IOPS, different drive combinations and different firmware versions will give different results for different workloads (it's an art to pick the highest performance combination). If you want to know about consumer grade hard drive failures when used in datacenter like conditions under high load check out this white paper from none other than google http://static.googleusercontent.com/media/research.google.com/en//archive/disk_failures.pdf (it's a few years old but still relevant).

You should just be able to do some port forwarding to be able to access it from outside your LAN - some DVR's have a build in function that uses a cloud based proxy which may also help (and not need firewall rules ect) might be worth giving those a look/try before trying a router with GSM.

Another way to do it would be to create a volume on disk 1 for OS of say 60GB, then another spanned volume across the remaining disks, which is effectively raid 0. if you're on 2012, you might even be able to do the whole thing without rebuilding. You can create a new volume on the second disk, move things like movies to it then shrink the C drive (conditions apply). there's some stuff here on it https://technet.microsoft.com/en-gb/library/cc772180.aspx - but in disk manager there's GUI's for all of this.

could also be done in a GPO - see the methods here and work backwards. Setting up a Corporate Signature - HowTo-Outlook

it the corp world you will often find a structure like ORG OU -- Org workstations -- -- Locations -- Org Users -- -- Staff -- -- Contractors -- Org Admins -- Org Servers (no gpo inheritance) Each top level OU starts with he org name/code as when acquisitions happen and the AD's get merged/integrated it helps segregate things until it all gets sorted. Normally computers and the other default OU's/containers are left alone and not used. Use delegation to drop computers into the correct OU when they're added to the domain(s). It's all about what suits the policy enforcement structure and segregation of groups of objects really. Most policies now use security groups to pick the objects they apply to.

There was one in a school I previously worked at. IIRC it's a chenbro case, with a standard mobo, standard psu, some standard drives and using LSI mega RAID. The LSI mega raid has a software that should give you a list of errors/issues with the drives. I think the drives were standard SATA drives... from the software you can identify the ports from the boards and therefore the drives. I haven't done this in the RM NASbox thing, but done a similar thing tracing cables from controllers to drives in some of my intel servers that have/use the same RAID control without the hd lights ect... I think the software is called "megaraid storage manager". You should find the RAID controller in device manager, within compmgmt.msc to confirm model/make. (it was some time ago, and I feel for you!)

Sucks - I hope it gets fixed for you tho

I made the jump - and i'm not looking back. I learnt lots from working in a school and then in a Uni, and i'm still learning loads in the private sector. Every job has it's issues - if it isn't the students breaking things it'll be the staff. And staff in the private sector range in their use and skill far more than in schools. You will still get the requests for how do I click on this, and to fix anything with a plug on it - and anything without a plug on it also. Just weight up the pro's and cons, and make the discussion that suits you/your family. Job security isn't too much of an issue - I remember a time when school IT wasn't a secure job with the BSF things that went on.

It's amazing that those machines can go so far on so little (RAM). Respect to those early coders.

yeah it would have been ideal - but they axed the project.... typical.

Such a waste

Hi all, before i look at buying and testing this - does anyone know if a raspberry PI2 with windows 10 IOT will run a powerpoint presentation (don't care about editing, just playback). Cheers

So I'm thinking of buying a few Extreme Networks SUMMIT X250E-48P switches for a project where I need lots of POE devices. But on one of the pages of extremes site it says to access the full 15W per port I need an additional PSU. I only need maybe 1/2W per port, does anyone know if i'll be able to use these switches and get POE without an additional PSU?

Just found this on eBay - it's not mine - Old Acorn, with loads of IO options I've not seen before. Might be of interest to a collector? ACORN RISCPC 600 4 slice bay computer RISC | eBay

Well... you certainly couldn't sue them for the virus infection, as it's very descriptive! Couldn't even take them to trading standards, as it's crystal clear.

Interesting - I need to improve my coverage at home, currently we have multiple AP's from differing vendors. Do the unifi AP's allow me to VLAN devices over the wireless?

I have feeling this means alot of staff will be expecting schools to go to 10 yesterday as it's FREE right? (i can read, but i bet the version information will be missed by many.)

You can avoid this by only allowing and configuring 'trusted DHCP servers' on your switches. This will effectively block all other DHCP servers from receiving the DHCP request and therefore clients will only see the correct DHCP server. It's called various things depending on brand/firmware. again - this for DHCP/DNS issues should be covered by the above - but also RADIUS can help protect your network from attacks that start with this nature.

Rather than adding extra NIC's you could use a Hyper V machine and add multiple virtual nics with differing vlans, and use the host's NIC as a trunk. That way you can have all the benefits of virtualising the 'server' and saves on ports too.