February-24th-2021, 09:20 AM
Hello there,
if you tell me both MAC addresses of your two netPI devices then I can tell you which type of SD card is used in your netPIs.
Since mid of year 2019 we are only assemble an SD card of SANDISK. This is a very fast SD card. Since then we did not change the SD card any more. The new card is colored white and the old cards are colored black.
1. You can check the SD card speed youself deploying a Raspbian OS container https://github.com/HilscherAutomation/netPI-raspbian and install tool sysbench once you logged in to this container. The simple call to install it is
Here is a link how to use it from the community: https://www.howtoforge.com/how-to-benchm...h-sysbench
2. So far I have no experience collected if a card that is used for long time is slower than a card that is fresh. I am not an SD card expert. Whenever we did speed tests with the SD cards I checked then my cards were already fresh an unused.
3. I can't answer. First we have to check which type of SD card really used in your netPI devices. Else all statements are speculation.
4. I can't answer
5. I am wondering that you say "the faster netPI is not so new" ... means this device the is older one and could have maybe inserted an SD card colored "black" from earlier day maybe. But these SD cards are very slow compared to the "white" new cards we use since 2019. This really sounds weird to me.
I think you have maybe noticed that we have new netPI versions with 32GByte size. For these new generation of SD cards the manufacturer SANDISK has implemented a special feature were a user can read out the level of deterioration. But this is not possible with the standard 8GByte SD cards.[url=https://www.google.com/search?safe=active&client=firefox-b-d&q=deterioration&spell=1&sa=X&ved=2ahUKEwi_686Ki4LvAhUK8BQKHf5bBSYQBSgAegQIEhA1][/url]
Thx
Armin
if you tell me both MAC addresses of your two netPI devices then I can tell you which type of SD card is used in your netPIs.
Since mid of year 2019 we are only assemble an SD card of SANDISK. This is a very fast SD card. Since then we did not change the SD card any more. The new card is colored white and the old cards are colored black.
1. You can check the SD card speed youself deploying a Raspbian OS container https://github.com/HilscherAutomation/netPI-raspbian and install tool sysbench once you logged in to this container. The simple call to install it is
Code:
apt install sysbench2. So far I have no experience collected if a card that is used for long time is slower than a card that is fresh. I am not an SD card expert. Whenever we did speed tests with the SD cards I checked then my cards were already fresh an unused.
3. I can't answer. First we have to check which type of SD card really used in your netPI devices. Else all statements are speculation.
4. I can't answer
5. I am wondering that you say "the faster netPI is not so new" ... means this device the is older one and could have maybe inserted an SD card colored "black" from earlier day maybe. But these SD cards are very slow compared to the "white" new cards we use since 2019. This really sounds weird to me.
I think you have maybe noticed that we have new netPI versions with 32GByte size. For these new generation of SD cards the manufacturer SANDISK has implemented a special feature were a user can read out the level of deterioration. But this is not possible with the standard 8GByte SD cards.[url=https://www.google.com/search?safe=active&client=firefox-b-d&q=deterioration&spell=1&sa=X&ved=2ahUKEwi_686Ki4LvAhUK8BQKHf5bBSYQBSgAegQIEhA1][/url]
Thx
Armin
„You never fail until you stop trying.“, Albert Einstein (1879 - 1955)
