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--- fester:hvalid_ram [2016/06/08 23:32] – created dan
+++ fester:hvalid_ram [2016/06/08 23:35] (current) – images dan
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 ====== Memory Validation ======
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 Memory validation is performed by running a piece of software on the server that basically writes data to a memory location, reads it back and then checks it is correct.
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 ===== Creating a Bootable MemTest86+ USB Stick =====
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+Download the “[[http://www.memtest.org/download/5.01/memtest86+-5.01.iso.zip|MemTest86+ USB Drive]]” ISO image for Windows. Unzip the file and [[:fester:burnusb|write it to a USB stick]] or [[:fester:ipmi_iso|mount via IPMI]].
+===== Using MemTest86+ =====
+Shut down the server if it isn’t already and then insert the USB stick.
+Power up and the server should boot into the MemTest86+ start up screen as shown.
+{{:fester:48fc9b5a210b53d67e386a42ffd5d82f.png}}
+If you are happy running the default tests, then when the start up screen appears do nothing, don’t hit any keys just wait and after a short period of time MemTest86+ will just launch into the default tests with no user intervention.
+Fester uses the default tests (I don’t know if this is a good or bad idea, perhaps someone has some advice on this so I can improve the guide).
+When MemTest86+ is conducting the tests you should see a screen that looks something like this.
+{{:fester:d5aea5b92c386529b3edcd25fd86b05a.png}}
+I ran the test for 24 hours. But some people run this test for days or even weeks!
+The test should return __zero__ errors (circled in red in the previous screen shot). If you get even one error then this might be a faulty module/s and should be returned for testing. It cannot be used for the FreeNAS server as it will likely cause corruption in the ZFS file system.
+When you are finished press the “Esc” button (this will reboot the server) or switch it off with the power button. Don’t forget to remove the USB stick.
-Download the “[[http://www.memtest.org/download/5.01/memtest86+-5.01.iso.zip|MemTest86+ USB Drive]]” ISO image for Windows.  Unzip the file and [[burnusb|write it to a USB stick]] or [[ipmi_iso|mount via IPMI]].
+That’s the memory tested.