kj99

cheers for the tip kawboy . kj

its actually got an inbuilt seagate 2tb drive ( the one put in by the wholesaler ) ... works fine,, but for 4 cif , 12 cameras , 25 fps - lucky to get a weeks or so recording the manufactuer/wholesaler ( systemQ) sell extra hard drives ( 3tb) but they r quite pricey - about 200 pound plus vat ... rip off and 4tb is probably 300 pound (ish) one on ebay - brand new described as " Seagate 4TB Barracuda 3.5" Internal Hard Drive SATA 6GB/s 64MB 7200RPM" Product DescriptionSeagate Barracuda Desktop HDD.15 - hard drive - 4 TB - SATA-600 TypeHard drive - internal Capacity4 TB Form Factor3.5" x 1/3H InterfaceSerial ATA-600 Data Transfer Rate600 MBps Buffer Size64 MB FeaturesNative Command Queuing (NCQ), Seagate OptiCache technology, Seagate AcuTrac technology Dimensions (WxDxH)101.6 mm x 146.99 mm x 26.11 mm Weight610 g Detail General Device TypeHard drive - internal Capacity4 TB Form Factor3.5" x 1/3H InterfaceSerial ATA-600 Buffer Size64 MB Bytes per Sector4096 FeaturesNative Command Queuing (NCQ), Seagate OptiCache technology, Seagate AcuTrac technology Width101.6 mm Depth146.99 mm Height26.11 mm Weight610 g Performance THE HARD DRIVE LOOKS QUITE CHEAP , AND BY THE TIME I TRY N BUY IT - IT MAY WELL HAVE GONE - DO YOU THINK ITS SUITABLE THO ? I WOULD PHONE SYSTEMQ- BUT THERE ADVICE IS TO CONTACT THE MANUFACTUER OF THE HARD DRIVE !!!

can anyone please advise me on my choice of hard drive ... i have bought an alien dvr (eco) and am recording 12 cameras at 4 cif , 15 fps im only getting about a week and a bit of recording - so i am adding an extra 4tb to the existing 2tb drive. ive found a well priced drive - but it only has 64MB RAM - ( ram buffer) ... is this sufficient for my needs? i wrekin in each frame there must be apx 1.5 mega bits ,, and if there is 15 fps that works out at apx 20 mega bits per second for one cameras worth ... if there are 12 cameras connected , then thats 12 cameras times 20 mega bits per second - eg : about 200 mega bits per second ..... if the ram buffer on the hard drive is 64MB - then thats about 3 to 4 times less than what i need ... does this sound right? ive got 700 tvl cameras - very sharp pictures , very nice pictures ... i dont know the exact amount of data in each frame .... but id guess its something like the above .... maybe ... have i bought the right hard drive ? the 4tb 64MB seagate 5900 rpm is about 150 pounds so not badly priced... any advice appreciated

this is the problem in a nutshell..... i install cameras at remote locations - and i currently use 3g sim cards with a fixed ip address ... (im in britain), the 3g sim card is placed in a 3g router with port forwarding. the sim cards are contract with a fixed ip address sim cards with a fixed ip address are expensive, with limited data allowance sim cards with lots of data (pre paid) dont come with a fixed ip address and the dynamic address they do have is NOT NATTABLE - its basically a private ip of the mobiles network... completely useless and cant be reached from the outside , even with port forwarding etc. if there were a way to configure the 3g router to act as a vpn client , connecting to the main vpn server ,,, then anything plugged into the 3g router could be reached from the server side , this would be great ... from the server side to be able to reach a camera plugged into the 3g router ( linked via an always on vpn) would be holy of holies- extremely useful. i could configure the router to act as the 3g vpn server - the problem is ,,,, the 3g sim (pre paid ) has no nattable public ip address ... so how , what,,, ip address would you put into the vpn client? therefore ,,making the 3g router a client would be better , cos i know the public ip address of the server ... and it doesnt matter if i dont know the address of the clients 3g connection im a bit grey when it comes to vpns - ive only ever set them up just to surf the net , go on iplayer etc ...nothing like this

i want to be able to access a remote cctv camera which has a built in vpn client - configurable to be always on , nailed up connection to a vpn server of my choice ... is there such a thing ? most people use vpn clients to connect to a camera which happens to reside somewhere on the vpn server side.i want to connect the other way round ..... usually a client connects to a server , and using a client you can connect to whatever is on the server side ... perhaps a camera i have an installation in mind , which would require the camera itself to be the client - and a p.c running on the server side could connect to this client to view the live stream. is this possible/ dooable?