I'm using Linux, guess we should have a Linux thread to avoid confusion...

(But this only applies to those that put the whole BOINC folder into RAM, not to the slots-only RAMdisk users. ;-))

Thanks again goben for collecting the multitude of inputs. I'm positive that we'll have sorted out all the aspects, pitfalls, and possible use cases of 'ImDisk's RAMdisk for BOINC' soon to post in a dedicated thread.

I think there is a setting that says write to disk and number of seconds on the device profiles of world community grid. I saw that the default was every 60 seconds. I changed it to 1200 seconds (20 minutes) and it fixed the problem.

Thank you for all the help. I checked and trim is enabled. I reinstalled lmdisk with same settings as last time except i turned off dynamic disk and now it seems to be working! Mayby that was it, my system did not like the dynamic disk setting. After that i also changed so it will only contain the slots folder. I restarted a couple of times without starting up WCG. Final test is to see if it holds up after running the WCG for a day and then restart. Should i alwas do a manual sync to be safe? Mayby even do a copy first time so i dont loose anything?

I am aware that often times SSDs last higher than the manufacture's stated TBW limit. That limit is normally(see note after the endurance experiment) for warranty purposes. Meaning that if you have exceeded the TBW limit, but not the time limit on the warranty, the drive is not covered by the warranty. I have looked into this a decent amount and concluded that it is worth it to drastically reduce the writes that happen to the drive. That was during the beta when I was running 1 unit at a time, now my nvidia card runs 10 at a time. Hopefully this post helps people understand why it is a valid concern.

Here are two things related to testing SSD endurance:

The endurance experiment :
Most of the drives lasted far longer than expected. The ones that I was able to locate the stated TBW lasted way longer than was stated. However, one of the drives went into read only mode and then on reboot did not even allow reads to take place. This is very important as you may not realize what has happened and restart only to find data recovery is no longer possible. It is not clear whether Intel is still doing that or not. (I put some of the text in bold).


Flash Reliability in Production:
This is a large scale study from Google and the University of Toronto. It is an interesting read. The two things I will note from it are:
1. The amount of data written to the drive does matter.
2. While 1 is true, it is not the only factor. They found how old(time wise) the drive is matters too independently of 1.