Sensor History Retention using Virtual Devices

[DCIM_Support]

Hi Team,

Just a quick question to verify some tests I have done today.
I am fairly sure this is correct but please do offer your feedback and confirm my understanding as this is required for a project activities we are undertaking shortly.

To my understanding and based on my quick test and previous knowledge Virtual Devices act as a normal device in DCE meaning that they will retain its sensor history from the day they get created until they get deleted.

History will be retained even if the Virtual Device configuration was changed along the way and the original sensor source is no longer monitored by DCE.

Scenario:

• | have 2 Virtual Devices calculating Total and Average of the same sensors from two UPS units (UPS1+UPS2),
• I can get graph based on historical data (dating back to the Virtual Devices creation time),
• I changed the Virtual Devices configuration to now be based on the same sensors but from different devices (UPS1+UPS3),
• I deleted UPS2 from DCE and I can see historical data on the Virtual Devices remains,
• I run this configuration for some time and data is now getting collected from new configuration,
• I than change the configuration again and now it uses UPS1+UPS4 sensors and UPS3 is deleted from DCE,
• Again historical data remained and I am now collecting information from new configuration.

Screen capture of DCE historical report attached:

Please advise if my understanding is correct.

I need to be confident that I will not lose historical data of a Virtual Device even if the source of data changes as per above example.

(CID:126169904)

[DCIM_Support · Accepted solution]

Hi Lukasz Staciwo,

Please advise if my understanding is correct.

I need to be confident that I will not lose historical data of a Virtual Device even if the source of data changes as per above example.

Everything is absolutely true and tested by me for almost five years.

Moreover, you can remove all physical sensors from the virtual device. In this case, the virtual device will not show any historical data at all. But if after some time, even a very long time, to add to this virtual device any appropriate physical sensor again, you can see all the historical data that once belonged to it.

Therefore, I have been using virtual devices for a long time and successfully 😀.

With respect.

(CID:126170059)

[DCIM_Support]

Thanks Spezialist

(CID:126170574)

[DCIM_Support]

I am glad to answer your questions 😀.

(CID:126171010)

[DCIM_Support]

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