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Memory extension: Difference between revisions
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(Created page with "Firmware version >= 3.3 allows to store some old statistical data on attached flash based storage device to extend the amount of time for historical data. When enabled, the sy...") |
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Tip: Since only data that is no longer changing can be swapped out onto the storage device, the graph detail settings can be adjusted to make more information available for external memory. The graph resolution reduction can be adjusted to lower values. It will however also make showing graph data slower for larger time periods so the best value depends on the actual amount of data stored and the use case. It is possible to start with a value of 1/1 for the reduction parameter and increase it, if the overall performance is not good enough. | Tip: Since only data that is no longer changing can be swapped out onto the storage device, the graph detail settings can be adjusted to make more information available for external memory. The graph resolution reduction can be adjusted to lower values. It will however also make showing graph data slower for larger time periods so the best value depends on the actual amount of data stored and the use case. It is possible to start with a value of 1/1 for the reduction parameter and increase it, if the overall performance is not good enough. | ||
=== Recommended SSD devices === | |||
We recommend to use sever-grade high speed SSDs with low access times and high I/ | |||
{| class="wikitable" | |||
|+ | |||
!Speed | |||
!Model | |||
!Notes | |||
|- | |||
|High | |||
|[https://www.intel.com/content/www/us/en/products/details/memory-storage/data-center-ssds/optane-dc-ssd-series.html Intel Optane SSD DC P5800X series] | |||
|Recommended for low to medium traffic load, statistic output is slower than usual | |||
|- | |||
|Average | |||
|[https://www.micron.com/products/ssd/product-lines/9300 Micron 9300 MAX SSD] | |||
|Use for low traffic load only, statistic output is slower too | |||
|- | |||
|Low | |||
|Other U.2/SATA/USB SSDs | |||
|might be used for low traffic scenarios, access to statistics will be significantly slower as well | |||
|} | |||