Equipment/Denning: Difference between revisions

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== Denning ==


Same hardware as [[Bell]] (more detailed hardware configuration there)
Denning is named after [https://en.wikipedia.org/wiki/Peter_J._Denning Peter J Denning], best known for pioneering work in virtual memory, especially for inventing the working-set model for program behaviour, which addressed disk thrashing and became the reference standard for all memory management policies.


Running the following services:
Same basic hardware as [[Bell]] (more detailed hardware configuration there) but now has a nice SSD to work from.


* Non-vital services that used to run on [[Boole]].
Denning provides the following services:
* Local [[LDAP]] services replicated from [[Turing]].
* ZoneMinder CCTV recording from legacy analogue cameras (b/w & colour) - possibly feeding into [[Bruce]] (the new ZoneMinder server)


== Zoneminder/CCTV ==
* [[Equipment/The_Beast| The Beast Video Game Arcade System]] - emulation, display and control management.
 
* Provide redundant fun and joy to those who play with The Beast
Denning has a full height 8-port PCI video capture card installed to digitise the analogue cameras. 
 
The card is currently connected to the 3 yard cameras and the rear lobby camera. The other 4 inputs are disabled until we put more cameras up.
 
The card is a BT878 8-chip 8-input full height PCI card similar to the [https://wiki.zoneminder.com/Kodicom_8800 Kodicom 8800]
 
The modprobe.d settings I'm using are:
 
<code>
options i2c-algo-bit bit_test=1
options tuner debug=1
options bttv gbuffers=16 card=102,102,102,102,102,102,102,102 radio=0,0,0,0,0,0,0,0 tuner=4,4,4,4,4,4,4,4 audiodev=-1,-1,-1,-1,-1,-1,-1,-1 v4l2=1 bttv_verbose=1 chroma_agc=1 combfilter=2 full_luma_range=1 coring=1
</code>
 
Each input is configured with:
 
* fps: 10
* alarm fps: 25
* palette: BGR24
* resolution: 640 x 480
 
This might just about work with all 8 inputs, however, we may have to drop the resolution to 360 x 288 - realistically this may never happen as we have been opting to install IP cameras in the space - superior images and no complicated capture cards for image acquisition.
 
== Issues ==
 
Currently has only a single mechanical hard drive so vulnerable to data loss. There is space for a second hard drive if we want to mirror the drive.

Revision as of 20:47, 2 October 2018

Denning
Denning-DellOptiplex780.JPG
Model Dell Optiplex 780 SFF 4GB Mem / 320GB SATA HD
Sub-category Systems
Status Good working order
Training requirement yes
Training link Unknown
ACnode no
Owner LHS
Origin Donation
Location Near Back Door
Maintainers Sysadmin team

Denning is named after Peter J Denning, best known for pioneering work in virtual memory, especially for inventing the working-set model for program behaviour, which addressed disk thrashing and became the reference standard for all memory management policies.

Same basic hardware as Bell (more detailed hardware configuration there) but now has a nice SSD to work from.

Denning provides the following services:

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