# HW/SW size, IOPS How to determine?

**URL:** <https://forum.inductiveautomation.com/t/hw-sw-size-iops-how-to-determine/101415>\
**Category:** Ignition\
**Created:** [January 27, 2025, 11:33am UTC](https://forum.inductiveautomation.com/t/hw-sw-size-iops-how-to-determine/101415 "2025-01-27T11:33:40Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Mau89](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/mau89/32/20680_2.png) [@Mau89](https://forum.inductiveautomation.com/u/Mau89)\
**Post date:** [January 27, 2025, 11:33am UTC](https://forum.inductiveautomation.com/t/hw-sw-size-iops-how-to-determine/101415/1 "2025-01-27T11:33:40Z")

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Hi everyone,  
Does anyone have but calculate how many iops are needed for a VM for an application with 100k tags historicized at a frequency of 30s?

thanks

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**Author:** ![pturmel](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/pturmel/32/3295_2.png) [@pturmel](https://forum.inductiveautomation.com/u/pturmel)\
**Post date:** [January 27, 2025, 12:21pm UTC](https://forum.inductiveautomation.com/t/hw-sw-size-iops-how-to-determine/101415/2 "2025-01-27T12:21:30Z")

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I've not seen any such tool. Ignition will avoid or reduce storage of unchanging values, so the actual DB load can vary greatly.