Issue with item unit (disk size)

[eansp]

I am trying to monitor disk space for a Dell SC2020 via SNMP. The OID value reports in GB.

Example from SNMP query:
Name/OID: scDiskFolderSUTotalSpace.2; Value (Gauge): 24964

Item Screenshot:


When I specify GB in Units, Latest Data shows KGB. I refer to Unit Symbols in the documentation, and use G, but I get KG.



Ideally, I want it to be displayed in TB as a float.

I am currently using Zabbix 5.0

[Hamardaban]

Use units B - the system will add the prefixes itself

It's good that you read the documentation! Bad - the wrong section.

https://www.zabbix.com/documentation...fig/items/item

Units

If a unit symbol is set, Zabbix will add post processing to the received value and display it with the set unit postfix. By default, if the raw value exceeds 1000, it is divided by 1000 and displayed accordingly. For example, if you set bps and receive a value of 881764, it will be displayed as 881.76 Kbps. The JEDEC memory standard is used for processing B (byte), Bps (bytes per second) units, which are divided by 1024. Thus, if units are set to B or Bps Zabbix will display: 1 as 1B/1Bps 1024 as 1KB/1KBps 1536 as 1.5KB/1.5KBps

[eansp]

Thank you for the information. I made the change, and now it is reporting in KB, and not GB. I tried changing from a float to unsigned, and it reported the same number displayed below.





Is there some preprocessing that needs to be setup?

[Hamardaban]

When you specify unit =B (predefined in the system), the system tries to display the received value using the prefix. If you get the number of bytes, everything will be displayed correctly. If the data element gets values in Kb and you specify B, you will get an erroneous display. Conversion: convert the resulting value to bytes using preprocessing and multiplication to get the result in bytes.

[eansp]

Since the SNMP value was reporting in GB, I added a preprocessing multiplier rule for 1073741824 Bytes, or 1GB, then set Unit to B, and it calculated the correct number for TB.





Thanks your your help and direction. Wanted to show and explain it in case anyone else had a similar situation.