General Discussions
Data Stored

Hi Everyone,

I’m a student at a German Uni working on a project with VT Scada. I’m curious to know how one can check/know how much data is being logged and stored in VT Scada.I’ve read the user manual and watched multiple videos, however I’m yet to find the solution. I would really be appreciative for any guidance.

Thank you.

Hi Everyone, I’m a student at a German Uni working on a project with VT Scada. I’m curious to know how one can check/know how much data is being logged and stored in VT Scada.I’ve read the user manual and watched multiple videos, however I’m yet to find the solution. I would really be appreciative for any guidance. Thank you.

Not quite what you asked... however, we monitor the remaining drive space using the Workstation Status Tag and addressing to the drive where the application is stored and data logged, we then alarm if this gets too full - https://www.vtscada.com/help/Content/D_Tags/Dev_WorkstationStatus.htm?tocpath=Reference%7CTag%20Reference%7CCommunication%20Driver%20Tags%7CWorkstation%20Status%20Tag%7C_____0

I also recently noticed that the system requirements page has an estimated memory usage for logging, some math might help you if you know how many tags you are recording etc.- https://www.vtscada.com/scada-system-requirements/

Not quite what you asked... however, we monitor the remaining drive space using the Workstation Status Tag and addressing to the drive where the application is stored and data logged, we then alarm if this gets too full - https://www.vtscada.com/help/Content/D_Tags/Dev_WorkstationStatus.htm?tocpath=Reference%7CTag%20Reference%7CCommunication%20Driver%20Tags%7CWorkstation%20Status%20Tag%7C_____0 I also recently noticed that the system requirements page has an estimated memory usage for logging, some math might help you if you know how many tags you are recording etc.- https://www.vtscada.com/scada-system-requirements/

Not exactly what you are asking, but I "think" the files are stored at
C:\VTScada\"ProjectName"\Data\History
two folders underneath, can manually check size

Check
https://www.vtscada.com/documents/datasheets/Datasheet-VTScada-OSandPCRequirements.pdf

says:
1K data changes/sec requires 1,500 GB/year

for me, 1K is a lot, so disk storage looks managable

{I once had a client who never cleaned out their storage: the HMI system we were using (not VTScada) kept storing data for 5 years until it filed up the (small) disk drive and crashed the system}

Not exactly what you are asking, but I "think" the files are stored at C:\VTScada\"ProjectName"\Data\History two folders underneath, can _manually_ check size Check https://www.vtscada.com/documents/datasheets/Datasheet-VTScada-OSandPCRequirements.pdf says: 1K data changes/sec requires 1,500 GB/year for me, 1K is a lot, so disk storage looks managable {I once had a client who never cleaned out their storage: the HMI system we were using (not VTScada) kept storing data for 5 years until it filed up the (small) disk drive and crashed the system}

Hmm
"Historical Logging 1K data changes/sec requires 1,500 GB/year"
Assume this is 1500G per year (English decimal = period) not 1,500G=1.5G (German decimal = comma)
So 1,500,000,000 per tag
How many seconds in a year? 31,536,000
Roughly 47 bytes per tag per record

Hmm "Historical Logging 1K data changes/sec requires 1,500 GB/year" Assume this is 1500G per year (English decimal = period) not 1,500G=1.5G (German decimal = comma) So 1,500,000,000 per tag How many seconds in a year? 31,536,000 Roughly 47 bytes per tag per record
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