14/12/2010
Prestige hotel gains continuous ROI with IP open platform
Johannesberg, South Africa
Francois Malan, Technical Director at Camsecure, reports: "We now have about 150 HDTV cameras at the Saxon and 40 legacy STD resolution cameras, running them on H.264 compression at 8fps which does not use a lot of disk space or bandwidth. In actual fact we are using less disk space with HDTV cameras on H.264 than we were using with STD resolution cameras on MJPEG. We are covering much larger areas with a single camera than ever before and recording more pixels for excellent coverage of all entrances for identification purposes."
Malan explains that they chose five Dell power edge servers with direct attached storage on a raid 5 configuration, "which is very fast performance, so we don't lose any footage. The trick is to have fast disks on your primary recording server. We are using SAS drives with 15000 rpm - twice the speed of the standard SATA drives at 7200 rpm. Also, we use a Windows 64 bit operating system which the Milestone software supports (opposed to the standard 32 bit OS). This gives us more available memory which helps with the read/write buffering process on the disks. We also group on servers the cameras that have lots of movement with cameras that have less movement to balance out the performance, a practical consideration in the design. The Milestone software also does the archiving process to the attached storage very efficiently and therefore does not impact on the CPU processing or disk speeds - this is very important when recording HDTV, also since we are recording for 3 months which produces a lot of video archives."
Plans are to also use the Axis cameras own built-in motion detection in order to cut down on the processing power required by the recording servers, so the servers will barely be doing any processing work, just writing footage to disk. "This actually works very well with the Milestone software as you then record from the camera only on event. You just set up the event in XProtect and you can still have a live stream for viewing the video. At the moment the highest CPU usage is around 20%, which goes up some when the client does playback on a large amount of cameras at once," he says. "But Milestone has some clever settings in the Smart Client software which really make a difference when viewing in the control room and remotely."
"The open platform network video approach with Milestone at the core allows the expansions over time to cover new property, but also to use new types of cameras that become available. Taking advantage of the latest technologies keeps the business competitive and on the cutting edge to continue providing the best security and service levels for their important guests," concludes Malan.