Honeywell VRX180 user manual Data Storage Status, Data storage considerations

Programming and Operating Concepts

The next step to complete is to initialize the disk on the video recorder as you would have done normally, as explained in the «Initializing a zip disk» section, except that this time, it will take just a few seconds.

Note: it is recommended to dedicate a ZIP disk to storage of data only and store configurations of products on a separate disk.

Data Storage Status

The prompt DATA STORAGE STATUS, accessed from the Online DATA STORAGE menu item, displays a calculation of how long a particular disk will last based on the configured data storage schedule. Disk capacity is indicated in days, hours, and minutes remaining on the disk.

After the instrument has been Online and actively performing Data Storage to disk, a warning message will appear when the disk reaches the default 90% capacity, or a user-specified capacity. Once a disk has reached its programmed capacity, a DISK FULL message will be displayed.

Data storage considerations

In order to guarantee a proper operation of the instrument (e.g. no sample lost), there is a maximum load that the video recorder should not overcome. This load can be theorically computed by considering the number of data storage trends, live trends and live screens programmed and their associated sample rate.

1 ) One live screen counts for one schedule per second. At least one live screen is present in the instrument. A live screen is a display that require any measurement information to be built.

2 ) Each ENABLED Data Storage schedule has a user defined sample rate.

3 ) Each ENABLED Live Trend has the following sample rates :

Screen Size			Schedule Sample Rate
5	Min Screen		1	Second
15		Minute Screen	3	Seconds
30		Minute Screen	6	Seconds
1	Hour		12		Seconds
2	Hours		24		Seconds
4	Hours		47		Seconds
8	Hours		93		Seconds (1.55 Minutes)
24		Hours	279 Seconds (4.65 Minutes)
7	Days		1951 Seconds (32.5 Minutes)
31		Days	8640 Seconds (2.4 Hours)

Therefore, to guarantee a proper operation of the instrument, the following inequation should allways be true :

Σ	P ro g ra m m e d tren d	+
	(live o r d a ta storag e )		N u m b e r o f	< 6
	A sso cia ted sa m p le ra te		live scre e n s

Video Recorder – User Manual 77