Differences

This shows you the differences between two versions of the page.

--- choosing_sd_card [2018/07/11 08:50] – [SD cards comparison] akuzmuk
+++ choosing_sd_card [2018/07/12 14:16] – [SD cards comparison] akuzmuk
@@ Line 1: / Line 1: @@
 ====== How to select a proper SD card ======
+WebHMI requires SD to work. On this page we will explain how to select a best card that will suit your needs.
+{{ ::insert-sd-card.jpg?direct&912 |}}
 ===== SD cards comparison =====
@@ Line 14: / Line 18: @@
 {{ ::sd-industrial.png?direct&912 |}}
-On this photo: Industrial-grade card can works for years under heavy load but commercial-grade card died after 2 months of work. Both cards are from the same manufacturer.
+On this photo: Industrial-grade card (left) works for years under heavy load and this commercial-grade card (right) died after 2 months of work. Both cards are from the same manufacturer.
 ===== Benchmark =====
 We tested five different memory cards in order to understand their performance differences applicable to WebHMI. The test consists of writing 60,000 rows into a data table for graphs (5 columns).
-The test involved such drives:
+The test involved such disks:
   * Silicon Power 4GB Class 4 MLC
@@ Line 48: / Line 52: @@
 How to find a faster card? Test all of your candidates!
-WebHMI has a built in benchmark to test performance of particular card. Go to page **Maintenance->Disk Usage->SD card speed test** and press **Run test** button. Test runs up to 1 minute. After test will be completed you will see how many writes to database per second your card can handle.
+WebHMI has a built in benchmark to test performance of a particular card. Go to page **Maintenance->Disk Usage->SD card speed test** and press **Run test** button. Test runs up to 1 minute. After test will be completed you will see how many writes to database per second your card can handle.
 Here is example of such test run: