= [wiki:Notes]/CABB Data rates and storage =
On [/trac/atoperations/wiki/Ops002 2008-02-13], Jim Caswell told us that the maximum data rates will be with:
 * 16 zoom channels
 * each 2048 channels
 * 4 stokes
 * 15 baselines + autocorrelations
 * all at two frequencies
Ultimately this will be over 400 Gbytes/day.

The interim system (to be installed in May 2008) will run parallel to the existing old conversion system and correlator.
The table below summarises the CABB available in the interim and final systems and shows the maximum data rates for each.

||	 ||	2008APR || 2008OCT	 ||	
|| Cycles/min ||	6 ||	6 ||
|| bytes/datum ||	8	 ||	8 ||	
|| Stokes	 ||	4	 ||	4 ||	
|| frequencies ||		1 ||		2 ||	
|| Standard channels	 ||	4096	 ||	4096 ||	
|| baselines	 ||	10	 ||	15 ||	
|| Auto corr products ||		5 ||		6 ||	
|| Bytes/minute	 ||	1.18E+07 ||		3.30E+07 ||	
|| Gbytes/day	 ||	17.0	 ||	47.6 ||	
||	 ||	 ||	 ||			
||	Zooms	 ||	 ||		16 ||	
||	Channels/zoom	 ||	 ||		2048 ||	
|| Bytes/minute		 ||	 ||			2.64E+08 ||	
|| Gbytes/day ||	 ||			380.5 ||	
||	'''Maximum data rate (GBytes/day) '''	 ||	'''17.0''' ||		'''428.1''' ||	

[wiki:Notes Notes Home][[BR]]
[wiki:WikiStart Wiki Home]